全 文 ：第 26 卷　第 4 期
　2008 年 12 月　 　 　
四川农业大学学报
Journal o f Sichuan Agricultural Univer sity
　 　 Vo l.26　No.4
Dec.2008
　＊收稿日期:2008-10-24
＊＊通讯作者(Cor responding author)。地址:675 Cantrill D riv e , Apt.218 , Davis.CA 95618-7769 , U.S.A.;电话:1-530
-753-3560;电子信箱:chiy en77@ho tmail.com。
鹅观草属(Roegner ia C.Koch)的订正(禾本科:小麦族)＊
杨俊良1 , 伯纳德 R.包姆2 , 颜　济1＊＊
(1.四川农业大学 小麦研究所 , 四川 温江区　611130;　2.加拿大农业与农业食品部 , 东部谷物与油籽研究中心 ,
加拿大 , 安大略 , 渥太华 , 邮编:K1A 0C6)
摘要:鹅观草属(Roegneria)属于禾本科小麦族 , 其物种都是含 St与 Y染色体组的异源多倍体植物。主要分布在亚
洲 ,只有一个种分布于南欧 ,另一个种从亚洲一直分布到北美洲的阿拉斯加。由于 St染色体组的显性遗传特性使
含 St染色体组的属 ,例如:Pseudoroegeria(St), E lymus(StH), Roegneria(StY)和 Campeiostachy s(HStY), 在形态
上表现出非常相似。更由于 1984年 Lö ve发表他划时代的以染色体组组成来界定的小麦族属的自然系统时还不知
道 Y染色体组的存在 , 因此他把鹅观草属合并到披碱草属(Elymus)中 , 从而导致一些人至今仍然信奉他的系统而
不承认鹅观草属。虽然现今对 Y 染色体组的研究已经取得巨大进步 , 所属物种也已十分清楚。其中当然也有传统
的形态学分类对显性遗传造成的趋同熟视无睹带来的错误 , 以及一些大形态分类学家的错误分类的影响。 现在发
表的这个修订了的鹅观草属是基于形态观察 、多变量形态统计分析 、细胞遗传与分子遗传的研究成果综合判定的。
这些成果来自不同的学者也包括我们自己。
关键词:染色体组组成;分类;属的界定;种;变种
A Revision of the Genus Roegneria K.Koch(Triticeae:Poaceae)
Y ang , J .L .1 , Ber nar d R .Baum2 , C.Y en1＊＊
(1.T riticeae Resea rch Institute , Sichuan Ag ricultural Univer sity , Wenjiang 611130 , Sichuan , China;
2.Eastern Cereals and O ilseeds Resea rch Centre , Agriculture and Ag ri-Food Canada , 960 Ca rling Ave.,
K.W.Neatby Building , Ottawa , Ontario , Canada , K1A 0C6)
Abstract:The genus Roegneria belong s to the t ribe Trit iceae of the grass family Poaceae.The
species of Roegneria are al l allopo lyploids w ith the St and Y genomes.Roegneria is mainly dist rib-
uted in Asia and only one species grow s in Southern Europe , and another ex tends to A laska of
No rth America.Most probably the dominance of the St genome is the cause fo r the morpho logical
simi lari ty among the specie s in the fo llow ing gene ra , Pseudoroegeria(St), E lymus(StH), Roeg-
neria(StY)and Compeiostachy s(HStY).Löve(1984)in his genomically based generic sy stem of
classification releg ated Roegneria into Elymus , most likely because the Y genome in Roegneria
plant w as no t well studied at that time.Löve s influence combined wi th morpho logical resem-
blance w ere the main cause for taxonomists to keep these related genera togethe r into Elymus.
The present revision of Roegneria i s a synthesis based on a combination of mo rpholo gical observ a-
tio ns , fol lowed by mult ivariate mo rphometric analy ses , cy to genetic and molecular genetic analy-
ses.
Key words:genom ic constitution;tax onomy;generic limits;species;variety
CLC number:S512　　Document code:A　　Article ID:1000-2650(2008)04-0311-71
DOI :10.16036/j.issn.1000-2650.2008.04.001
　　　 四川农业大学学报 第 26 卷
Introduction and historical sketch
Roegneria K.Koch(1848)was based on Roegneria caucasica K.Koch.The genus is endemic to Eura-
sia w ith the majority o f the species dist ributed in Central and East Asia.One species , Roegneria panormi-
tana (Parl.)Nevski(StY)is native to M edite rranean and South-east Europe[ 1 , 2] .The type species R .cau-
casica contains the St and Y genomes[ 2-4] .
Nevski
[ 5]
recognized the genus Roegneria as an independent genus , and subdivided it into 2 sect ions ,
24 series and listed 40 species.From 1933 to 1936 , he made new combinations and described 49 species in
the genus , thus completed a an excellent taxonomic t reatment of this genus wi th his sharp eye in discrimi-
nating grasses , before his premature death in his early 30s during the Nazi armed int rusions to his country
during World War II.Since Nev skis w ork had been based on morpho logy alone , he mixed the dif ferent al-
lopolyploids of the StY , StH , and HStY taxa.
Keng and Chen[ 6] follow ed Nevski and divided this g enus into three sections and 27 series.Keng and
Chens classification , also based on morphology alone , differs f rom Nevskis by slight changes.However ,
Keng described a number of new Roegneria species native to China , all belonging to his new section Para-
gropyron Keng.He pointed out that the section Paragropy ron is tax onomically po sitioned between Roeg-
neria and Agropy ron.Now we know that this g roup of species po ssesses the P genome from Agropyron
and St Y genomes f rom Roegneria.On that basis and in combinat ion w i th mo rpholog y , we elevated section
Paragropy ron to genus K engy i lia C.Yen &J.L .Yang[ 7] , named af ter Yi-Li Keng , subsequent ly pro vid-
ed additional suppor t fo r generic status
[ 8 , 9] , and added new species to the genus[ 2 , 10-13] .
Unde r the inf luence o f Nevski , the majority of taxonomists of the thi rties to fif ties o f the tw entieth
century recognized the genus Roegneria and therefo re published approximately 34 new species , new combi-
nations and new varieties under this genus.Among them , Kitag aw a (1938 , 1939 , 1941 , 1942), Ohw i
(1966 , 1941)and Keng and Chen[ 6] , were notable contributors.
Subsequently , Tzvelev[ 14] did no t recognize the genus Roegneria.For instance , in 1968 , he abandoned
R.gmelini i (Ledeb.)Kitagaw a w ith Elymus gmel inii (Ledeb.)Tzvelev.In 1972 , he combined R.cauca-
sica into Elymus L .as E lymus caucasicus (K.Koch)Tzvelev unde r Section Clinelymopsis(Nevski)Tz-
velev.Tzvelev also combined Anthosachne Steudel into Elymus as a section.Thus , E lymus sensu lato be-
came a very large mixed up genus , which included many different allopolyploid tax a wi th StY , HSt , HStY ,
PStY , and StW genomic combinations.
We recognize the dominance ef fect o f the St genome as a cause that rendered most diagnostic mo rpho-
logical cha racters to be genetically expressed.Only a few specialized dom inant characters are expressed by
o ther genomes , rendering it very dif ficult to separate genera morpho logically , although no t impossible.
For example , we found that the sho rt palea w ith rounded tip and wide distance betw een i ts tw o keels are
contro lled by the Y genome;the sharp tip w ith narrow distance betw een tw o keels of the palea are proba-
bly stemming f rom the H genome;and that hai ry g lumes and lemmas are dominant characters of the P ge-
nome.Therefore cy to genet ic and molecular genetic analy ses are required to discriminate betw een these
closely related genera wi th the St genome , and the mo rpholo gical diagnostic is no t suf ficient.
Tw o no table tax onomists Dewey[ 15] and Löve[ 16] were very influencial in their w ork on Triticeae.Dew-
ey w as an outstanding pionee r who contributed to cytogenetics and breeding of perennial Triticeae.He de-
termined and clari fied the genomic const itut ions of most perennial g roups of the t ribe.Löve propo sed ge-
nomes as a basis fo r gene ric delimitation.His essential principle is that each genome in his subjective inter-
pre tation(o r haplome)o r each combination of genomes should form the basis of a genus.Since the Y ge-
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第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
nome in Roegneria and related gene ra was not w ell studied at that time Löve t reated Roegneria as a syno-
nym of E lymus.Dew ey and Löve did no t recognize Roegneria and combined StY taxa into E lymus.Fur-
thermore , Löve wi thout evidence guessed , probably based on mo rpholog y alone , that these taxa w hich we
now know to contain the StY genomes carry the StH genomes.
An incomprehensible (to us)paper by Chen and Xu[ 17] , st ressed that the genome and mo rpholo gical
characters can no t be lumped together.Genome is internally inheri ted whereas morpho logical characters
are phenotypic and are products infections of genes wi th envi ronmental facto rs.In thei r table 2 , they stat-
ed that both Roegneria and E lymus po ssess the S[ sic St] , H , Y genomes regardless of the f inding s by o th-
ers and therefore the re are no dif ferences between these two genera.
In sum , to precisely determine w hethe r a tax on belong s to Roegneria , cy tog enetic genome analy sis or
DNA mo lecular analy sis is necessary.The sho rtest chromosome o f the Y genome carries a pair of satel-
lites , a chromosomal character to ident ify the Y genome in an allopolyploid.Morpholo gically , the wide dis-
tance be tw een tw o keels and sho rt palea w ith round o r t runcate tip appear to be useful diagnostics.Due to
the dominance o f the St genome , the species of Roegneria are densely tuf ted perennial g rasses w ithout or
w ith sho rt rhizomes , and have as a rule glabrous spikes w ith spikelets imbricate , and one se ssile spikelet
per node o f rachis.
Key to species and varieties of genus Roegneria in Himalaya and Qinghai-Xizang plateau
1.Spike e rect or slightly curved 2⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
2.Tw o g lumes subequal 3⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
3.Lemma w ithout aw n , mucronate about 0.5 mm long , and w ith 1-2 late ral tooth(o r teeth);palea
slight ly sho rter than lemma , apex emarginated (51)R .buschiana (Roshev.)Nevski⋯⋯⋯⋯⋯
3.Lemma awned 4⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
4.Awn sho rt ly than lemma obviously , 4-5 mm long , w ith membranous margins;palea almost e-
qual to lemma , apex obtuse o r emarginated (73)R.leiantha Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
4.Awn longer than o r subequal to lemma 5⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
5.A wn longer than lemma 1-3 times , lemma linear-lanceolate , palea subequal to lemma , apex
round-obtus (46)R.angusta L .B.Cai⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
5.A wn subequal to lemma 6⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
6.Palea subequal to o r sho rte r than lemma , tw o keels upper 3/4 o r w ho le leng th wi th bristle;
spikelets clearly stalked (77)R.magnipoda L .B.Cai⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
6.Palea longer than lemma obviously , tw o keels sparsely ciliate on upper par t;spikelets sessi le
(54)R.curt iaristata L .B.Cai⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
2.Tw o g lumes unequal 7⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
7.Glumes aw ned 8⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
8.Glumes w ith narrow ly membranous margin;lemma narrow ly lanceo late , aw n as long as lemma or
one time longer , aw n st raight or slightly curved;palea narrow ly lanceolate , apex t runcate , o r ob-
tuse or emarginated , brist led between tw o keels (37)R.t ibet ica (Melderis)H .L.Yang⋯⋯⋯
8.Glumes w ithout nar row ly membranous margin;Lemma broadly lanceo late , aw n 2-3 times lon-
ger than lemma , obviously curved 9⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
9.Glune oblong-lanceolate , 3 -5 ne rv ed;palea equal to or slightly longer than lemma , apex
round-obtus;anther yellow (87)R.pulanensis H .L.Yang⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
9.G lume lanceolate , 5-7 nerved;palea equal or slight ly shorter than lemma , apex t runcate;an-
ther brow n (94)R.shoul iang iae L .B.Cai⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
313
　　　 四川农业大学学报 第 26 卷
7.Glumes not aw ned 10⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
10.Palea shorter than lemma 11⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
11.Palea sho rter than lemma obviously;lemma awn slight ly longer than lemma 12⋯⋯⋯⋯⋯
12.Spikelets narrow ly , ar ranged sparsely , not appressed to rachis , rachis inter-nodes slender ,
the low ermost internode much longer than spikelet (72)R.laxinodis L .B.Cai⋯⋯⋯⋯⋯
12.Spikelets no t narrow ly , arranged densely , appressed to rachis , rachis inte r-nodes rather
thick , the lowe rmost internode as long as spikelet
(40)R .val ida(Melderis)J.L.Yang , B.R.Baum et C.Yen
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
11.Palea slightly sho rte r than lemma lemma awn longer than lemma 13⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
13.Lemma awn longer than lemma about one time;leaf blade sof t , f lat , not erect;spikelet
w ith 1-3 f lorets;g lumes w ithout membranous margins;lemma margins and basal part ap-
pressed pubescent;palea apex round obtuse o r emarginated (2)R.alt issima Keng⋯⋯⋯
13.Lemma awn longer than lemma 2 times;leaf blade fi rm , invo lute , erect;spikelet w ith 3-
5 flo rets;g lume w ith membranous margins;lemma nerves cabrous or minute hispidulus;
palea apex t runcate (16)R.glauci folia Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
10.Palea subequal to lemma 14⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
14.Lemma awn sho rter than lemma , aw n 2-5 mm long , lemma w ith very narrow ly purple mar-
gins;spikelets subsecund;g lume apex acumina te , w ith aristulate , 1-3 mm long ;palea tw o
keels w inged , densely hard ciliates on upper part , and down to base g radually shor ter and
sparsely , palea back betw een keels puberulus (65)R.humilis Keng et S.L.Chen⋯⋯⋯⋯
14.Lemma awn longer than lemma 15⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
15.Lemma awn slight ly longer than lemma 16⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
16.G lume wi th membranous margins 17⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
17.Glume narrow ly lanceo late , g labrous , apex acute w ithout mucronate;lemma back gla-
brous (95)R .sik kimensis(Melderis)J.L.Yang , B.R.Baum et C.Yen⋯⋯⋯⋯⋯⋯
17.Glume broadly lanceolate , hirsute , apex acuminate or mucronate , 0.5-1 mm long;
lemma back scabrous o r minute ciliate , low er part densely pubescent
(36)R .tenuispica J.L .Yang et Y.H .Zhou
⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
16.G lume wi thout membranous ma rg ins , broadly lanceolate , with a slightly oblique , apex a-
cute or mucronate;lemma lanceo late , g labrous , aw n 7-17 mm long , slight ly reflexed
(41)R.varia Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
15.Lemma awn longer than lemma one time o r more 18⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
18.Lemma awn longer than lemma about one time 19⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
19.Rachis inte rnodes g labrous;spikelet wi th 5-6 f lorets;palea apex round obtus
(50)R.burchan-buddae (Nevski)J.L.Yang , B.R.Baum et C.Yen
⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
19.Rachis inte rnodes ci liate on angles;spikele t wi th 6-8 flo ret;palea apex emarginated
o r tuncate (53)R.crassa L .B.Cai⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
18.Lemma awn longer than lemma tw o t imes 20⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
20.Leaf blade glabrous , inv olute;glume w ith membranous margins , apexacuminate and
mucronate 1 -2 mm long;lemma lanceo late;aw n longer than lemma 3 -6 times ,
st rongly reflxted , sometimes w ith tw o teeth at base;palea apex obtus or t runcate
(23)R.jaquemonti i (Hook.f.)Ovezinnikov e t Sidorenko
⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
20.Leaf blade spar sely ciliate on margins , flat;Glume margins wi thout membranous , apex
acute or acuminate , usually 1 toothed and wi th sho rt aw n;lemma narrow ly lanceo late;
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第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
palea obtus or emargina ted
(56)R .duthiei (Meldris)J.L.Yang , B.R.Baum et C.Yen
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯
1.Spikes curved and nodding 21⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
21.Lemma awn shorter than lemma 22⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
22.Upper surface of leaf blade sparsely pubescent;auricle not sickle-shape;spikelets w ith 3-4 f lo-
rets;g lumes 3-nerved;lemma awn slight ly curved , 6-8 mm long
(62)R .×graci li s L .B.Cai
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
22.Upper surface of leaf blade sparsely vi llous;auricle sickle-shape;spikelets w ith 4 -6 f lorets;
glumes 3-5-nerved;lemma awn st raight , 2-4 mm long (103)R .yushuensis L .B.Cai⋯⋯⋯
21.Lemma awn longer than lemma 23⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
23.Lemma awn slightly longe r than lemma 24⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
24.Spike nodding or slight ly curved;leaf blade f lat;spikelets w ith 6-8 f lorets;glume narrow ly
lanceolate , as long as 3/4 to f loret , 3-ne rved , st rong and protuberance , with very narrow ly
membranous magins;lemma oblong-ovate , with an acute apex , aw ned(4-)12-18 mm;palea
clearly shorter than lemma , up to 3/4 of lemma , apex slight ly obtus
(33)R.sem icostata(Nees ex Steud.)Kitag awa
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
24.Spike nodding 25⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
25.Leaf blade f lat;spikelets wi th 2-4 f lorets;lemma awn st raight , 6-11 mm long ;palea tw o
keels wi th short ciliate on who le leng th (64)R.hongyuanensis L .B.Cai⋯⋯⋯⋯⋯⋯⋯⋯
25.Leaf blade involute;spikelets wi th 5-10 f lo rets;lemma awn ref lexed , 7-18 mm long;palea
tw o keels ciliate on upper part (28)R.nutans(Keng)Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
23.Lemma awn longer than body one time o r mor 26⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
26.Lemma awn longer than lemma one time 27⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
27.First and second glumes half leng th to lemma , f irst glume 3-4 mm , 3-nerved , 2nd glume 5
mm long , 4-5-nerved;lemma about 10 mm long , aw n 20-25 mm , reflexed;anther black
(7)R.brev ig lum is Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
27.Second glume more than half length to lemma , o r slight ly shor ter than Lemma 28⋯⋯⋯⋯
28.Tw o g lumes subequal;leaf blade hard , invo lute;spikelets g reenish-purple;lemma 9-11
mm long , aw n 18-28 mm long , purple , slightly divaricate;palea subequale to lemma , tw o
keels ciliate on upper 1/3 , pubescent on back betw een keels;anther purple-black
(88)R.purpurascens Keng
⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
28.Tw o g lumes unequal 29⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
29.Leaf blade hard , f lat or invo lute on margins;spikelets w i th sho rt pedicel , 0.5-1.5 (-
2)mm long;g lume w i th membranous margin;lemma awn 15-28 mm long , st rong ly re-
flexed;palea apex round obtuse;anther y ellow (15)R.dura(Keng)Keng⋯⋯⋯⋯⋯
29.Leaf blade fof t , f lat;spikelet w ithout pedicel;glume w ithout membrane;lemma awn 12
-20 mm long , st raight o r slightly curved;palea apex t runcate;anther purple
(78)R.microlepis(Melderis)J.L.Yang , B.R.Baum et C.Yen
⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯
26.Lemma awn longer than lemma over tw o times 30⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
30.Lemma awn longer than lemma about tw o times 31⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
31.Lemma awn st raight;leaf sheath w ith gray pubescent;spikelets 4-7 f lorets , w ith slender
pedicel , 0.5-2 mm long;tw o g lumes unequal , sho rt and small , under half leng th of lem-
ma , na rrow ly lanceolate , back scaberulous o r nearly smooth , aw n st raight , 12 -35 mm
long ;palea shor ter than lemma , apex t runcate (42)R.yangiae (B.R.Lu)L .B.Cai⋯⋯
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　　　 四川农业大学学报 第 26 卷
31.Lemma awn ref lexed;leaf shea th g labrous 32⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
32.G lume shor t , less than half leng th to lemma lemma 33⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
33.Spikelet w ith shor t pedicel , 0.5-2 mm long ;lemma back g labrous , scaberulous or
smoo th , 5-nerved on upper part obviously , aw n rather thick , 22-35 mm long , re-
f lexed;palea sho rter than lemma , tw o keels ciliate on uppe r pa rt;anther yellow
(8)R.brevipes Keng
⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
33.Spikelet wi th short pedicel , less than 5 mm;lemma back densely minute seto se , 3-
nerved , late ral nerves thin , aw n slend , 21-30 mm long , reflexed or slight ly ref lex ed;
palea equal to lemma , tw o keels ciliate on uppe r 1/3 par t;anther yellow to yellow ish
purple (48)R.antiqua(Nevski)J.L.Yang , B.R.Baum et C.Yen⋯⋯⋯⋯⋯⋯⋯⋯
34.Culms 40-100 cm tal l;leaf blade upper surface scabrous o r pilo se , low er surface
scabrous , margins g labrous o r scabrous;spikes slightly f lexuo se;spilelets w ith (2
-)3-4 f lorets;first g lumes 1.5-2 mm long;lemma 3 ne rve s , lemma awn 21-20
mm long (48)R.ant iqua var.ant iqua⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
34.Culms ca 70 cm tall;leaf blade upper surface and low er surface villo se , marg ins cili-
ate;spikes not flexuo se;spikelets w ith 5-9 flo rets;fi rst glumes 2-2.5 long ;lem-
ma 5 nerves , lemma awn 10-17 mm long
(4)R.antiqua var.parvig luma (Keng)J.L.Yang , B.R.Baum et C.Yen
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯
32.G lume long , fir st glume 2-6 mm long , second g lume(2.5-)3-9 mm long ;leaf blade
invo lute or margin invo lute , uppe r and low er surfaces densely hai ry ;lemma narrow ly
lanceo late , back scabrous or sparsely pubescent , aw n 15-30 mm;palea slight ly sho rter
than lemma , apex round obtuse , tw o keels ciliate on who le leng th
(9)R.cacumina(B.R.Lu e t B.Salomon)L .B.Cai
⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
30.Lemma awn longer than lemma more than 4 t imes , 35-55 mm , st rong ly ref lexed;leaf blade
nar row ly linea r , inv olute o r margins invo lute , rarely flat , upper and low er surfaces glabrous ,
scabrous;rachis internodes g labrous;spikelet w ith shor t pedicel 0.3-0.5 mm;lemma nar-
row ly lanceo late , callus densely seto se;palea slightly sho rt than lemma , apex round obtus
(31)R .retrof le xa(B.R.Lu e t B.Salomon)L .B.Cai⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
Key to species and varieties of genus Roegneria in East Asia
1.Spike e rect 2⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
2.Lemma no t aw ned , with mucronate 1-5 mm long 3⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
3.Lemma w ith mucronate 1 mm long;leaf blade co riaceus , spike linear;rachis internodes equal to or
longer than adjacent spikelet;tw o glumes unequal , fi rst glume 10-14 mm long , second g lume 11-
15 mm long , 5-7 nerves;callus wi th w hite pilose , about 1 mm long;palea 1/3-1/4 sho rter than
lemma , apex round obtus (19)R.grandis Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
3.Lemma mucrona te about 2 mm long or more 4⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
4.Lemma mucronate about 1-2 mm long 5⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
5.Spikelets wi th 3-6 f lo rets;tw o glumes unequal , f irst g lume 9-10 mm long , second g lume 10
-11 mm long , both 5-7 nerves , subequal to lemma , back densely minute hirsute to f ine pi-
lo se , apex acuminate , not dentate , mucronate , 1-1.5 mm long ;palea obviously sho rter than
lemma , apex obtuse , tw o keels ci lio late on upper par t
(67)R.intramongolia Sh.Chen et Gaowua
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
5.Spikelets wi th 2-4 f lorets;tw o glumes subequal , 4-8 mm long , bo th 3-5-nerves , sho rter
316
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
than lemma , back glabrous , sparse setulous on nerves , apex acute , 2-3-dentated o r mucro-
nate , 1-1.5 mm long;palea slight ly shorter than lemma , apex obtuse o r slightly emargina-
ted , tw o keels scabrous (98)R.subf ibrosa Tzvelev⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
4.Lemma mucronate 4-5 mm long 6⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
6.Lemma mucronate 1.5-4 mm long , not bidentate at the base;spikelet w ith 5-7 flo rets;tw o
glumes subequal , 9-15 mm long , 5-7 nerves , w ith sca rio se marging s , apex acum inate , mu-
cronate , longer or slight ly sho rter than lemma;palea subequal to lemma , apex truncate o r e-
marginated , tw o keels ciliate on 4/5 upper par t (68)R.kamczadolora Nevski⋯⋯⋯⋯⋯⋯
6.Lemma mucronate(2-)4-5 mm long , bidentateat the base;with spikele t 2-3 f lo rets;tw o
glumes subequal , (5-)7-9 (-10)mm long , 3-5 nerves , with purple membranous mar-
gins , apex acute , mucronate 1-2 mm long , slightly sho rter than lemma;palea subequal to or
slight ly sho rter than lemma , apex obtus , tw o keels ciliate
(69)R.kronokensis(Kom.)Tzvelev
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
2.Lemma awned 7⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
7.Lemma awn equal to o r slightly longer than lemma 8⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
8.Glume apex acute 9⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
9.Leaf blade margins involute or complicate , upper and low er surfaces pube scent;g lume apex
one side slight ly emarginated , fi rst g lume 5-7 mm long , 5 nerves , second g lume 6-8 mm , 6
-ne rved;lemma awn 12 mm long , ref lexed (79)R.minor Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
9.Leaf blade f lat , uppe r and lower surfaces g labrous;g lume apex abrupt ly const ricted to mucro-
nate 2 mm long , first g lume 5 mm long , 3-nerved , second g lume 7-8 mm long , 5-nerved;
lemma awn(6-)7-8 mm long , st raight (75)R.lenensis M.Popov⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
8.Glume apex acuminate;leaf blade ha rd , erect , inv olute;leaf blade uppe r surface sparse pi lose ,
low er surface glabrous;first glume 7-8 mm long , second g lume 8-10 mm long , bo th 3-5
nerves;lemma 9 mm long , aw n 10-15 mm long , st raight o r slight ly curved;palea subequal to
lemma , apex t runcate o r emarginated , tw o keels w ith spine-like ciliate on upper half part
(96)R .sinica Keng
⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
7.Lemma awn longer than lemma about 1-2 time(s) 10⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
10.Lemma awn longer than lemma about one time 11⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
11.Palea subequal to lemma 12⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
12.Leaf blade upper and lowe r surfaces g labrous;spikelet w ith 5-8 f lo re t;tw o glumes une-
qual , first g lume 7-8 mm long , 4-5 nerves , second glume 8-9 mm long , 5-6 nerves ,
apex mucronate;lemma broadly lanceolate , apex acute to a st raight aw n , 16-25 mm long
(5)R.barbical la Ohw i⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
13.Culm nodes , leaf blades and leaf sheaths g labrous (5)var.barbical la⋯⋯⋯⋯⋯⋯⋯⋯
13.Culm nodes g larous o r hairy;leaf blades g labrous or hairy on upper surface;leaf sheaths
glabrous or hairy on the basals 14⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
14.Leaf blades g labrous;nodes densely pi lose and mo re and less pi lose below nodes;basal
leaf sheaths almost hai ry (49a)var.pubinodes Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
14.Leaf blades pilo se on upper surface;nodes and leaf sheaths g labrous , rarely pubescent
(49b)var.pubi folia Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
12.Leaf blade upper surface sparse pilose , low er surface glabrous;tw o g lumes subequal , f irst
g lume 9-10 mm , 3-5 nerves , second g lume 9.5-11.5 mm , 6-7 nerves , apex mucro-
317
　　　 四川农业大学学报 第 26 卷
nate;lemma broadly lanceolate , apex acute o r w ith a reflex ed awn , 18-22 mm long
(27)R.nakai Kitag awa
⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
11.Palea sho rter than lemma 15⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
15.Leaf blade f lat , upper surface only sparse hi rsute on nerves;tw o g lumes unequal , f irst
g lume 7-10 mm long , 3-5 nerves , second glume 8.5-11 mm long , 4-6 nerves , apex a-
cuminate o r acute , mucronate , subequal to lemma o r slight ly longe r;lemma apex laterals
microdensed , aw n(15-)20-25 mm long , straight;palea slight ly sho rte r than lemma , a-
pex obtus and emarginated (21)R.hondai Kitag awa⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
15.Leaf blade f lat , upper surface sparse pilo se;tw o g lume unequal , f irst g lume 7-8 mm long ,
3-5 nerves , second glume 8-9.5 mm long , 5-6 (-7)nerves , apex acuminate or acute
o r mucronate , alw ay s on one side or tw o sides dentate;lemma apex w i th 1 too th , aw n 12-
25 mm long , straight;palea slightly sho rter than lemma , apex round obtus
(44)R.aliana Keng
⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
10.Lemma awn longer than lemma more than 2 times 16⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
16.Leaf blade flat , upper surface pubescent , lowe r surface glabrous;spikelet secund on spike ,
with 5-7-f lorets;glumes nar row ly lanceo late , f irst glume 6-11.5 mm , 3 nerves , ra rely 4
-5 ne rv es , second glume 9-12 mm long , 5 nerves , apex acum inate;lemma back w ith sho rt
co arse setose , aw n(20-)25-43 mm , ref lexed;palea subequal to o r slightly sho rter than
lemma , apex round obtuse o r minute marginate (18)R.gmelini i (Ledeb.)Kitag awa⋯⋯⋯
17.Culm 60-100 cm tall;leaf blade 3-8 mm broad;spikes almost erect;rachis rather stout
18⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
18.Culms rather slende r , 1.5-2 mm diam;tw o g lumes unequal , 7-12 mm long , sho rter
than fi rst lemma (18)R.gmelini i var.gmelini i⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
18.Culms rather stout , ca.3 mm diam ;tw o g lumes subequal , 10-15 mm long , equal to or
second g lume longer than fi rst lemma
(61a)R.gmelini i var.macrathera(Ohwi)Kitag awa
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
17.Culm 50-7 cm tall;leaf blade 2-6 mm broad;spikes curved o r nodding ;rachis rather
slende r 19⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
19.Leaf blade 2.5-6 mm broad;spikes 8-15 cm long , 3-6 mm broad(excluding aw ns);
spikelet 15-25 mm , w ith 5-7 f lo rets
(61b)var.pohuashanensis(Keng)J.L.Yang , B.R.Baum et C.Yen
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯
19.Leaf blade 2-2.5 mm broad;spikes 10-15 cm long , 2-3 mm broad(excluding aw ns);
spikelet w ith 3 flo re ts and one lemma
(61c)var.tenuiseta(Ohw i)J.L.Yang , B.R.Baum et C.Yen
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯
16.Leaf blade f lat o r margins invo lute , upper surface densel pilo se , lower surface glabrous;
spikelet no rmal on spike , w ith 3-6 f lorets;g lume broadly lanceolate , fi rst glume 6-7 mm
long , second glume 7-8 mm long , both 3-5 nerved , apex acuminate to mucronate , o r acute
to mucronulate;lemma apex bo th sides or one side wi th minute dens;aw n(15-)26-32 mm
long , thin , st raight (14)R.dolichathera Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
1.Spike nodding 20⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
20.Lemma awn slight ly longer than lemma;tw o g lumes unequal , with narrow ly membranous margins ,
apex aw ned and 1 or 2 dentate(s), f irst g lume 5-6 mm long , aw n 3-4 mm long , second g lume 6-
7 mm long , aw n 4-6 mm long;lemma 9-10 mm long , aw n 14-18 mm long ;palea shorter than
lemma obviously , apex t runcate or emargingate (93)R .serpentina L .B.Cai⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
318
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
20.Lemma awn longer than lemma more than one time 21⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
21.Lemma awn longer than lemma less than tw o times 22⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
22.Tw o g lumes unequal , broadly lanceolate , g labrous , fi rst g lume 5-6 (-7)mm long , second
g lume(6.5-)7-9 mm long , both (3-)5-7 ne rve s , apex acuminate , mucronate;lemma
broadly lanceolate , back smoo th , g labrous , w ith narrow ly membranous margins , aw n 11-21
mm long ;palea subequal to or slight ly shorter than lemma , apex obtuse , tw o keels ciliate on
upper 1/3 part (34)R.shandongensis(B.Salomon)J.L.Yang , Y.H .Zhou et C.Yen⋯⋯⋯⋯
22.Tw o g lumes subequal 23⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
23.G lume apex dentate 24⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
24.Glume apex micronate , one side or tw o sides dentate(s);lemma broadly lanceolate , back
hirsute , lo ng and hard ciliate on margins , aw n (10-)15-20 (-30)mm , ref lexed , one
side o r tw o sides dentate at base;palea 1/3 sho rter than lemma , apex round obtuse , tw o
keels ciliate on upper half part (12)R.ci l iaris(Trin.)Nevski⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
25.Spike nodding , g lume margin ciliate , lemma back densely o r loo sely hirsute , long ciliate
along the margin 26⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
26.Lemma awn more than 10 mm 27⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
27.Upper and low er surface of blade g labrous , marg in glabrous
(12)R.ci l iaris(Trin.)Nevski
⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
27.Upper and low er surface of blade hai ry , margin hai ry
(13a)R.ci liaris var.amurensis(Drobov)C.Yen et J.L.Yang
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
26.Lemma awn 1-3(-7)mm (52b)var.submut ica(Honda)Keng⋯⋯⋯⋯⋯⋯⋯⋯
25.Spike erect o r subnodding , g lume margin g labrous 28⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
28.Lemma back scabrous o r loo sely hirsute , margin sho rt ciliate
(13b)R.cil iaris var.japonensis(Honda)C.Yen , J.L.Yang et B.R.Lu
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
28.Lemma back glabrous or scabrous , margin wi thout ciliate
(52a)R.ci liaris var.hackel iana(Honda)L .B.Cai
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
24.Glume apex micronate , dentate obviously ;lemma lanceo late , back wi thout hi rsute , on up-
pe r half part sparsely appressed setose , lo ng ciliate on margins , aw n 15-28 mm long;pale-
a equal to lemma , apex round obtuse , tw o keels ciliate on1/2 uppe r pa rt 29⋯⋯⋯⋯⋯⋯
29.Culms nodes glabrous , rarely pubescent (30)R.pendul ina Nevski⋯⋯⋯⋯⋯⋯⋯⋯⋯
29.Culms nodes pubescent o r covered densely re tro rse w hite hairs , ra rely g labrous 30⋯⋯
30.Culms nodes pubescent 31⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
31.Spikes 6-12 cm long ;lemma back scaberulous on upper part
(82a)R.pendulina var.brachypodioides(Nevski)J.L.Yang , B.R.Baum et C.Yen
⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯
31.Spikes 18-25 cm long;lemma back sparsely pubescent on upper par t o r w ho le back
(30a)R .pendul ina var.mult iculis(Kitag aw a)J.L.Yang , B.R.Baum et C.Yen⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
30.Culms nodes covered densely ret ror se w hi te puberulent
(82b)R .pendul ina var.p ubinodis Keng
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
23.G lume apex no too th 32⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
32.Tw o glume unequal , broadly lanceolate , g labrous , fi rst glume 4.5 -6 mm long , 3 -4
nerves , second glum 5.5-7 mm long 5 nerves , apex acute o r acuminate;lemma lanceo late ,
smoo th glabrous o r scaberulous , aw n 17-23 mm long , thin , st raight;palea slight ly shor-
ter than lemma , apex round obtuse emarginated , tw o keels nearly smooth , minute setose
near apex (85)R.puberula Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
319
　　　 四川农业大学学报 第 26 卷
32.Tw o glumes unequal , lanceo late , pilo se , first g lume (6-)7 -7.5 mm long , (3 -)5
nerves , second glume 8-9 mm long , (5-)7 ne rves , apex acuminate o r micronate;lemma
lanceolate to broadly lanceo late , back hirsute , rarely g labrous , aw n 10-20 (-25)mm ,
thin , st raight;palea subequal to lemma , apex round obtus or emarginated , tw o keels cili-
ate , back betw een keels pubescent (43)R.yezoensis(Honda)Ohw i⋯⋯⋯⋯⋯⋯⋯⋯⋯
21.Lemma awn longer than lemma more than tw o times 33⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
33.Leaf blade flat o r slight ly invo lute 34⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
34.Spikele t w ith 3-5 flo rets;g lume wi thout membranous ma rg ins , apex acuminate o r acute , or
mucronate ca.1 mm long 35⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
35.Nodes and culm ex sert sheath part , and lowe r leaf sheaths glabrous;lemma back all w ith
minute hir sute , margins glabrous , aw n thick , 25-40 mm long , curved or st raight;palea
sho rte r than lemma , apex t runcate or emarg inated , tw o keels glabrous , or nea r apex scabe-
rulous , back betw een keels pubescent (74)R.leiotropis Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
35.Nodes and culm exert sheath part , and low er s leaf sheaths densely ret ro rse pubescent;
lemma back , scabrous , without minute hi rsute , upper margins ciliate , aw n thin , 20-30
mm long , st raight o r slight ly curved;palea equal to lemma , apex obtuse o r emarg inated ,
tw o keels densely setulo se ciliate on upper part , but dow n to base g radually sparse and dis-
appear , back betw een keels minute se tulose (86)R.pubicaul is Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯
34.Spikelet wi th 6-8 f lorets;g lume wi th membranous margins , apex acuminate , mucronate 1-
2.5 mm long;lemma broadly lanceolate , with membranous , middle part glabrous , upper and
the low er parts loosely hispidulous , lo ng ciliate near margins , aw n (20-)25-30 mm long
st raight or slight ly curved;palea equal to o r slight shorter than lemma , apex round obtuse ,
keels w inged , ciliate on upper 3/4 part (66)R.hybrida Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
33.Leaf blade invo lute 36⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
36.Leaf blade slight ly involute , but sometimes f lat 37⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
37.Leaf blade pilo se on both surfaces;tw o g lumes unequal , narrow ly lanceo late , shor ter than
lemma obviously , second glume sho rte r than adjacent lemma about 1/5;lemma lanceo late ,
on upper and margins back hirsute , aw n thick , ref lex ed;palea sho rter lemma , apex round
obtuse , tw o keels ciliate on upper half par t;anther red-brow n
(3)R .anthosachnoides Keng
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
38.Lemma on upper part and margins hi rsute;spike 8-9 cm long (excluding aw n)
(3)R.anthosachnoides var.anthosachnoides
⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
38.Lemma g labrous o r scat tered sparsely minute setose;spike 10-16 cm long
(47)R.anthosachnoides var.scabri lemma L .B.Cai
⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
37.Leaf blade glabrous on bo th surfaces;tw o glumes unequal , broadly lanceo late , second
glume subequal to adjacent lemma;lemma broadly lanceolate , back scabrous o r appressed
pubescent , aw n thick , st raight or irregularly f lexuous;palea equal to lemma , apex round
obtus , o r slight ly emarginated;tw o keels w inged , ciliate all leng th;anther yellow 39⋯
39.Leaf blade 4-6 mm broad;spikes 15-20 cm long;lemma ca.8 mm long
(59)R .f ormosana(Honda)Ohw i
⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
39.Leaf blade 2-4 mm broad;spikes 7-12 cm long;lemma 8.5-11 mm long 40⋯⋯⋯
40.All of the sheaths g labrous;lemma awn 2-3.5 cm long
(59a)R .f ormosana var.longearistata Keng
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
320
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
40.Basal sheaths alw ays pi lose;lemma awn 1-2 cm long
(59b)R.f ormosana var.pubigera Keng
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
36.Leaf blade alw ays invo lute , glabrous on both surfaces;tw o g lunes unequal , broadly lanceo lat-
e , second g lume slight ly shor ter than adjacent lemma , apex acute , mucronate , o r acuminate
tapering to sho rter aw n 2.5 mm long;lemma broadly lanceo late , on upper par t minute hir-
sute , on low er par appressed pubescent , aw n(15-)25-30 mm long , slight ly ref lexed;pa-
lea equal to or slightly shorter than lemma , apex round obtuse o r truncate , tw o keels setose
on upper 1/3 par t (92)R.serot ina Keng⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
Key to species and varieties of genus Roegneria in Central Asia
1.Spike e rect or slightly curved 2⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
2.Lemma no t aw ned o r aw n sho rter than lemma 3⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
3.Spikelets arranged densely 4⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
4.Leaf sheaths densely pubescent;upper internodes and nodes densely appressed pubescent;leaf
blade , f lat , on bo th surfaces densely vi llose;spikelets a rranged densely , of ten secund;tw o
g lumes subequal , lanceolate , 8-10 mm long , apex acuminate to a point , no t dentated , white
membranous marg ins;lemma lanceolate , back densely pubescent , apex acuminate to a sho rt
aw n , 3-5 mm;palea slight ly shorter than lemma , apex obtuse o r slight ly emargina ted
(71)R.lachnophy l la Ovcz.et Sidor
⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
4.Leaf sheaths g labrous o r lower leaf sheath pilo se 5⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
5.Leaf sheaths glabrous 6⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
6.Leaf sheaths and leaf blades green;lanceolate , 8-10 mm long , apex acuminate or acute to
point , no t dentate , narrow ly membranous margins;lemma lanceolate , g labrous , 9-11 mm
long , apex acuminate , mucronate , 1-3 mm , sometimes one side denticulated , callus w ith
0.2 mm long hai rs;palea equal to lemma , apex obtus and emarg inated , tw o keels densely
ciliate on upper part , back betw een keels pubescent
(99)R.sy lvat ica Keng et S.L.Chen
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
6.Leaf sheaths and leaf blades g laucescence;oblong-ellipt ic , 7 -9 mm long , glabrous , apex
obtuse o r oblique , erose o r dentated;lemma lanceo late , g labrous o r sho rter hai ry at base , 10
-11 mm long , not aw ned , apex obtuse , slightly emarginated o r dentate;palea 1.8-2 mm
long sho rter than lemma , apex obtuse rarely emarginated (101)R.troctolep is Nevski⋯⋯
5.Leaf sheaths glabrous or pilo se on lowe r leaf sheaths;rhizomed;leaf blad f lat o r involute , on
bo th surfaces w ith spa rsely w hi te hai rs , o r scabrous on upper surface , on lowe r surface gla-
brous;rachis internodes 4-5 mm long , the low est one up to 8 mm long;spikelets w i th(3-)
5-9 f lorets , secund;glumes broadly lanceo late , glabrous , tw o glumes unequal , f irst g lume 8
-10 mm long , 5(-7)nerved , second g lume 10-15 mm long , 5-7(-9-11)nerved , apex
acuminate , alw ay s 1 too thed , membranous margins;lemma lanceo late , 11-13 (-15)mm
long , back appressed minute hi rsute , apex aw ned or point o r mucronate , 0.5-5 (-7)mm
long , bidentate at the base;palea equal to or slight ly sho rter than lemma , apex obtuse or e-
marginated , tw o keels ci lia te on whole leng th , pubescent on back be tw een keels
(39)R.ugamica(Drobov)Nevski
⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
3.Spikelets arranged sparsely 7⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
7.Rachis internodes 6-13 mm long;spikelets not appressed to rachis , 15-20 mm long(excluding
aw n), w ith 5-6 f lorets;tw o g lumes subequal , 8-12 mm long , 4-6 (-7)nerved , broadly
321
　　　 四川农业大学学报 第 26 卷
membranous margins , apex acuminate;lemma oblong-lanceo late , glabrous , on upper part 5
nerves obviously , about 10 mm long , aw n 2-6 mm long;palea equal to lemma or slight ly shor-
te r (102)R.viridula Keng et S.L.Chen⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
7.Rachis internodes 11-17 mm long (the low est one reaches to 30 mm long);spikelets appressed
to rachis , 15-20 mm long (excluding aw n), with 4-5 flo rets;tw o g lumes subequal , 10-15
mm long , 6-9 nerveds , w ith nar row ly membranous margins;lemma lanceolate , back densely
pubescent , pilose at the base , on upper part 5-nerved obviously , 11-12 mm long , aw n 3-8
mm long ;palea shor ter than lemma 1-2 mm long (81)R.nud iuscula L .B.Cai⋯⋯⋯⋯⋯⋯⋯
2.Lemma awned 8⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
8.Lemma awn subequal to lemma or slight ly shor ter 9⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
9.Tw o g lumes subequal 10⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
10.G lumes apex w ith mucronate or short aw n , 2-7 mm long , sometimes 1 to othed;lemma lan-
ceolate , 10-12 mm long , sparsely pilose , apex acuminate , tapering to sho rt aw n , 8-10 mm
long;palea subequal to lemma , apex obtuse o r emarginated
(24)R.komarov ii (Nevski)Nevski
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
10.G lumes apex w ithout mucronate and short aw n , w ith o r w ithout point;lemma awn w i th bi-
dente at base 11⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
11.Glumes apex wi th point , sometimes w ith 1 too th;back scabrous or hi rsute , apex tapering
to aw n , (5-)10-16(-20)mm long , st raight;palea equal tapex obtuse o r emarginated
(100)R.t ianschanica(Drobov)Nevski⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
11.Glumes apex wi thout point;back appressed pubescent , apex apering to aw n , 14-18 mm
long , ref lexed;palea equal apex round obtus (45)R.altaica(D.F .Cui)L .B.Cai⋯⋯⋯
9.Tw o g lumes unequal 12⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
12.G lumes apex mucronate o r point , palea equal to lemma 13⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
13.Glumes lanceolate , apex mucronate , 0.2-2 mm long , f irst glume 12 mm long , second
g lume 14-15 mm long , both 5-7 ne rved;lemma lanceo late , 12 mm long , aw n 7-14 mm
long , st raight or reflexed;apex t runcate or emarginated (83)R.platyphy lla Keng⋯⋯
13.Glumes narrow ly lanceo late , apex point , ca.0.2 mm , first glume 5-6 mm long , 1-3(-
5)nerves , second g lume 6-8 mm long , 3-5 ne rve s;lemma oblong-lanceolate , aw n(9-)
10-15 mm long;apex round obtuse
(70)R.kuramensis(Melde ris)J.L.Yang , B.R.Baum et C.Yen
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯
12.Glumes apex no t mucronate or point , first g lume 7-8 mm long , 3-5 nerves , second glume 9
-10 mm long , (3-)6-7 nerves;lemma lanceo late , 9-10 mm long , aw n 10-18 mm long ,
st raight or slight ly curved;palea shorter than lemma , apex obtuse (58)R.f ol iosa Keng⋯
8.Lemma awn longer than lemma 1 time o r more 14⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
14.Lemma awn longer than lemma 1 time 15⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
15.G lumes apex w ithout mucronate 16⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
16.Glume apex not dentate , fir st g lume 7-8 mm long , second glume 10 mm long , bo th 5-7
nerves , apex acum inate;lemma 7-9.5 mm long , back and margins densely coarse hi rsute;
lemma awn , 16-25 mm long , st raight o r slightly curved;palea 1/3 shor ter than lemma ,
tw o keels sparse ci liate w hole length (63)R.hirt i f lora C.P .Wang et H .L.Yang⋯⋯⋯
16.Glume apex dentate 17⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
17.Leaf blade g labrous on bo th surfaces 18⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
18.First g lume 4-6 mm long , 3 nerves prominens obviously and 1-2-nerved fine , sec-
322
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
ond glume 5.5-7.5 mm long , 3-5 nerves prominens obviously , apex acute , o r one
side dentate;lemma broadly lanceo late , 9 mm long , aw n 10-20 mm long , ref lex ed;
palea equal to or slightly sho rter than lemma , apex t runcate or emarginated , uppe r 1/3
of tw o keels w ith shor t setulous-like ciliate (60)R.glaberrima Keng et S.L.Chen⋯
18.First g lume 9-11 mm long , 3-4-nerved , second glume 11-12 mm long , 3-5-
nerves , apex acuminate or point , one side 1 dentate;lemma lanceo late 7-8 mm long ,
aw n 12-15 mm , f ine , st raight;palea equal to lemma , apex obtuse , tw o keels setu-
lous-like ciliate on uppe r pa rt (89)R .scaberidula Ohw i⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
17.Leaf blade densely pubescent on uppe r surface , pube rulous or g labrous on low er surface ,
fi rst g lume 10-13 mm long , second glume 12-15 mm , bo th (5-)6-8 nerved , apex
alw ay s oblique , 1-2 dentate;lemma lanceolate , 10-12 mm , apex bidentated , aw n 20-
25 mm long , ref lexed;palea equal to lemma o r slight sho rte r , apex round obtuse , tw o
keels ciliate on upper 1/3(rarely ?)part (22)R .interrupta (Nevski)Nevski⋯⋯⋯⋯
15.G lumes apex mucronate o r sho rt aw ned 19⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
19.Spikelets densely arranged on spike rachis 20⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
20.Leaf sheaths glabrous;leaf blade glabrous , scaberulous;fi rst g lume 11-13 mm long ,
second g lume 12-15 mm long , both 5-7(-9)-nerved , apex acuminate , tapering to
mucronate , 2-3 mm long , sometimes 1-toothed;lemma lanceo late , 10-12 mm long ,
appressed setulous , on uppe r part margins not membranous , no t dentated , aw n 12-20
mm , st raight or slight ly curved;palea equal to lemma , apex obtuse , tw o keels ciliate on
upper 1/3 part (90)R.sclerophy l la Nevski⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
20.Leaf sheaths of stem low er part densely villose;leaf blade spar sely w hite vi llose on mar-
g ins o f upper surface;f irst g lume 7-8.5 mm long , second 8.5-10 mm long , bo th 4-5
nerves , apex acuminate tapering to mucronate or short aw n , 2-4.5 mm long;lemma
broadly lanceolate , 8 -9.5 mm long , g labrous , on upper part margins membranous ,
sometimes 1-2 teeth , aw n 12-20 mm long , st raight;palea equal to lemma , apex round
obtuse , tw o keels lo ciliate on uppe r part
(6)R.boriana(Melderis)J.L.Yang et B.R.Lu
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
19.Spikelets sparsely on spike rachis 21⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
21.Leaf shea ths g labrous , scabrous;leaf blade on upper surface densely w hite vi llose and
mixed pubescent , o r sparsely w hi te pi lose , on low er surface and margins scabrous;f irst
glum 11-18 mm long , 5-7 nerves , second g lume 12-20 mm long , 6-7(-9)nerves ,
apex acum inate tapering to mucronate , 3 mm long , no tooth;lemma lanceolate , 13-16
(-18)mm long , on upper back g labrous o r sparsely appressed shor t hi rsute , upper mar-
gins not membranous , not dentated , aw n 20-30 (-35)mm long , thin , st raight or
slight ly curved;palea shorter than lemma , apex round obtuse , rarely t runca te , two keels
ciliate on upper 2/3 part (26)R.macrochaeta Nevski⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
21.Leaf sheaths g labrous or pubescent on low er sheaths;leaf blade pilo se on upper surface ,
low er surface and margins scaberulous;fi rst glume(6-)8-8.5 mm long , 3 nerves , sec-
ond g lume 7-9 mm long , 5 nerves , apex acute abrupt to mucronate , 3 mm long , no
tooth;lemma lanceo late , 9-13 mm long , on upper back pilose , upper part margins no t
membranous , bidentated , aw n 20 mm long , fine , slightly curved;palea slight ly sho rter
323
　　　 四川农业大学学报 第 26 卷
than lemma , apex round obtuse , slightly emarginated , tw o keels densely ciliate
(84)R.prokud inii Seredin
⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
14.Lemma awn longer than lemma more than 2 times 22⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
22.Glumes broadly lanceolate , tw o glumes subequal , fi rst g lume 10-18 mm long , second g lume
10.5-18 mm long , both 5-7-ne rve s , w ithout narrow ly membranous margins , apex acumi-
nate , sometimes tapering to mucronate and 1-toothed or lobed;lemma broadly lanceo late ,
10-14 mm long , back appressed setulo se-like hi rsute , aw n 25-37(-40)mm long , st raight
reflex ed;palea equal to lemma , apex round obtuse or obtuse or t runcate
(13)R.curvata (Nevski)Nevski
⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
22.G lumes lanceolate , tw o g lumes unequal , fir st glume 9-10 mm long , second g lume 10-12
mm long , both 3 nerved , nar row ly membranous margins , apex acuminate , mucronate , 2 mm
long , no t dentated or lobed;lemma lanceo late , 10-12 mm long , on upper back w i th sho rt
hi rsute , aw n 20-35 mm long , reflexed;palea equal to lemma , apex round obtus
(97)R.sink iangensis(D.F .Cui)L .B.Cai
⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
1.Spikes nodding 23⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
23.Lemma aw n sho rter than lemma;leaf sheath glabrous;leaf blade fla t , upper surface glabrous or
sparsely w hite villo se , low er surface g labrous;spikelets ar ranged rather sparse;g lume lanceo late ,
tw o glumes unequal , g lumes longer than lemma , fi rst glume 10-15 mm long , second g lumes 11-16
mm long , both 5-7-ne rv ed , apex acuminate , oblique , 1-to othed , scario se margins;lemma lance-
olate , 9-13 mm long , back scabrous or appressed pubescent , aw n 3-5(-10)mm long , rarely o-
ver 10 mm long , very few to 22 mm long , st raight or curved;palea shorter than lemma , apex slight-
ly obtuse;anther yellow ish-blak (1)R.abolini i (Drobov)Nevski⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
23.Lemma awn longer than lemma 24⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
24.Lemma awn longe r than lemma 1 time;leaf sheath g labrous , leaf blade involute , on upper surface
scabrous o r pubescent , low er surface smooth glabrous;spikelets arranged rathe r sparsely;glumes
broadly lanceolate , tw o g lumes unequal , g lumes sho rter than lemma , f irst glume 5-6 mm long ,
second g lume 7-8 mm long , bo th 5-7 nerved , apex acute , oblique , no t dentated , no t membra-
nous margins;lemma lanceolate , 9-10 mm long , back sparsely setulouse , aw n 20-25 mm long ,
ref lex ed;palea equal to o r slight ly shorter than lemma , tw o keels setulouse , apex t runcate
(57)R.f le xuosa L .B.Cai
⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
24.Lemma awn longer than lemma tw o t imes or mo re 25⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
25.Lemma awn longer than lemma tw o times 26⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
26.Tw o g lumes subequal , lanceolate or bro adly lanceo late , 4-9(-10)mm long , glabrous , a-
pex acute o r acuminate , sometimes mucronate , 1-1.5 mm long;lemma lanceolate , back sca-
berulous , 9-10 mm long , apex acuminate , aw n 20-30 mm long , slightly reflex ed;palea
subequal to or sho rter than lemma , apex obtuse or slightly emarginated
(38)R.tschimganica(Drobov)Nevski
⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
26.Tw o g lumes unequal 27⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
27.Densely tuf ted , without short rhizomes;upper leaf sheaths g labrous , basal leaf sheath grey
o r brow n pilose;leaf blade scabrous or densely pubescent on both surface;g lumes narrow ly
lanceolate , f irst glume 1.8-4 mm long , 3-4 nerves , second glume 2-6 mm long , 3-5
nerves , narrow ly membranous margins , apex acute o r acuminate , point or mucronate;lem-
ma nar row ly lanceolate , 7.5-10 mm long , back scabrous o r pubescent , apex acuminate ,
aw n 20-35 mm long , st rong , ref lexed;palea sho rter than lemma , apex obtuse and emargi-
324
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
nate (32)R.schugneanica (Nevski)Nevski⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
27.Loo sely tuf ted , w ith sho rt rhizomes 28⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
28.Leaf theaths g labrous;leaf blade on bo th surfaces smooth glabrous;glumes bro adly lan-
ceolate , fi rst g lume 5 mm long , second g lume 7 mm long , bo th 3 nerved , membranous
margins , apex acute , muconate o r awm (1-)3-7(-10)mm long;lemma broadly lan-
ceolate , (9-)10-12 mm long , back sparsely setulouse;palea equal to lemma , apex
t runcate o r emarginate
(17)R.glaucissima(M .Pop.)J.L.Yang , B.R.Baum et C.Yen
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯
28.Leaf sheaths glabrous o r sparsely pubescent;leaf blade glabrous o r spar sely pubescent on
uppe r surface , low er surface g labrous;glumes bro adly lanceolate , f irst g lume 2-4(-5)
mm long , 3 nerves , second glume 4-5(-9)mm long , 5-6 nerves , no t membranouse
margins , apex acuminate o r acute , point;lemma narrow ly lanceoate , 11-12(-14)mm
long , back sparsely pilo se , thick hirsute on margins , apex acuminate , aw n 24-32(-
38)mm long , st raight o r slight ly curved;palea shorter than lemma , apex obtuse or t run-
cate bidenticulate (11)R .caucasica K.Koch⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
25.Lemma awn longer than lemma more than 3 times 29⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
29.Leaf blade narrow , 0.5-1 mm w ide , of ten involute and st raight , glabrous o r sparsely pubes-
cent on upper surface , low er surface g labrous;spikelet wi th(6-)7-8 f lo rets;fir st glume 3
-9 mm long , (3-)5-7 nerved , second g lume(4-)6-10 mm long , 5-7 nerved , narrow-
ly membranous margins , apex acute , point , or acuminate tape ring to mucrona te , up to 5 mm
long;lemma narrow ly lanceo late , 8-12 mm long , back se tulouse o r appressed pubescent , a-
pex acuminate , aw n 25-40 mm long , low er part canaliculated , straight or slight ly ref lex ed;
palea 1/4 shorter than lemma , very ra rely equal to lemma , apex round obtuse , tw o keels cili-
ate on upper 1/3 part;anther yellow o r yellow ish-purple
(10)R .canaliculata(Nevski)Ohw i
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
29.Leaf blade 1.5 mm w ide , of ten invo lute to setifo rmis , upper surface densely pubescent , rarely
g labrous , lowe r surface g labrous;spikelet w ith 7-12 f lo re ts;first g lume 6-9 mm long , sec-
ond glume 9-12 mm long , bo th 3-5 ne rv ed , not membranous margins , apex acute or acumi-
nate to mucronate , 3 mm long;lemma narrow ly lanceolate , 10-12(-14)mm long , back
smoo th glabrous , apex acuminate , aw n(35-)40-80 mm long , reflex ed;palea equal to lem-
ma o r slight ly shorter , apex obtuse , tw o keels ciliate on upper 2/3 part ;anther yellow
30
⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
30.Both leaf blade-faces densely pube scent 31⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
31.Whole back of lemma g labrous;palea keels ciliate on 2/3 upper part
(76a)var.badaschanica (Tzvelev)J.L.Yang , B.R.Baum et C.Yen
⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
31.Only central back of lemma glabrous , upper and basal part densely pubescent;palea keels
ciliate on 1/3 upper part
(76e)var.sintenisii (Melderis)J.L.Yang , B.R.Baum et C.Yen
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯
30.Leaf blade densely pubescent on upper surface , low er surface glabrous 32⋯⋯⋯⋯⋯⋯⋯
32.Rachilla and callus glabrous 33⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
33.Palea ciliate on 1/2 uppe r par t
(76d)var.li tv inov ii (Tzvelev)J.L.Yang , B.R.Baum et C.Yen
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
33.Palea ciliate on 2/3 uppe r par t 34⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
34.Spikelets wi th 7-12 f lorets (25)R.longearistata(Boiss.)Drobov⋯⋯⋯⋯⋯⋯
325
　　　 四川农业大学学报 第 26 卷
34.Spikelets wi th 3-4 f lorets
(79c)var.hausskneckt ii (Boiss.)J.L.Yang , B.R.Baum et C.Yen
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
32.Rachilla scabrous;callus tw o sides setose;palea keels ciliate on 1/3 upper part
(76b)var.f lexuousissima(Nevski)J.L.Yang , B.R.Baum et C.Yen
⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
Key to species of genus Roegneria in West Asia and South-East Europe
1.Densely tuf ted;w ithout rhizomes;spikelet w ith 2-3 flo rets;tw o glumes subequal , nar row ly lanceolate
or lanceolate , (12-)15-24 mm long , lo nge r than lemma , about equal to spikelet , (5-)7-9-nerved ,
apex acum inate tapering to mucronate , up to 5 mm long , membranous margins;lemma narrow ly lanceo-
late , 9-15 mm long , back nea rly smoo th , but up to apex g radually scabrous , apex acuminate , aw n(10
-)20-32(-35)mm long , st raigh t;palea slight ly shor ter than lemma , apex slight ly emarginate;tet-
raploidy , 2n=24 (29)R.panormitana(Parl.)Nevski⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
1.Densely tuf ted;w ithout rhizomes;spikelet w ith 2-3 flo rets;tw o glumes subequal , nar row ly lanceolate
or lanceolate , (12-)15-24 mm long , longer than lemma , about equal to spikelet , (5-)7-9 -
nerved , apex acuminate tapering to mucronate , up to 5 mm long , membranous margins;lemma narrow-
ly lanceo late , 9-15 mm long , back nearly smoo th , but up to apex gradually scabrous , apex acuminate ,
aw n (10-)20-32(-35)mm long , st raight;palea slightly sho rter than lemma , apex slightly emargi-
nate;hexaploid , 2n=42
(20)R .heterophy l la(Bornm.ex M elderis)C.Yen , J.L.Yang et B.R.Baum
⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
⋯⋯⋯⋯⋯⋯⋯⋯⋯
Enumeration of species and varieties
Roegneria K.Koch , 1848.Linnaea 21:413.
Synonym:Agroy ron J.Gaeriner , 1770.N ov.Comm.Acad Sci.Pe tro ol.14 (1):539;Anthosachne
Steudel , 1854.Synopsis P l.Glum.1:237.Brachypod ium Beauvois pro parte.Semeiostachy s Drobov ,
1941.Fl.Uzbek.1:540.
Type species:Roegneria caucasica K.Koch Linnaea 21:413.1848.T YPE:Turkestan , “A.Regel Iter
Turkestanicum Aug.1877 VIII.Tssikul , Musast.Tri ticum strigosum Less.v.microcalyx Rg l.” .neo type ,
LE no t seen , i soneo type , K 000433042 pho to ! designated by Baum et al.(2008).
Description:Pe rennial g raasses , loose or dense tuf ted , rarely uniculm , rhizomeless , rarely erect sho rt
rihzomoid stem.Culm 15-135 cm tall , e rect , some of them geniculate at base.Leaf blade f lat or inv olute ,
linear to lanceolate.Spike e rect , curved or nodding , rachis tough , spikelet so litary , terminal spikelet w ell
developed , sessile or sho rt pediferous , usual ly imbricate , w ith 2-10 or mo re f lorets.Glumes lanceolate to
linear-lanceo late , flat o r rounded backed , keelless , aw nless or sho rt aw ned;lemmas lanceo late , rounded
backed , keelless , g labrous , scabrate o r hairy , 5-7 veins , aw nless , short aw ned o r w ith long aw n , aw n
st rict o r ref lected;palea w ide distance betw een tw o keels , tip rounded , t runcate or emarginate , keels gla-
brous , or ciliate;anthe rs m inute , usually 1-3.5 mm long , rarely 6.5 mm.
Cytology:Chromosome numbers 2n=4x =28 , 2n=6x =42.Genomes StStYY , StStStStYY.The ge-
nome const itut ion of 43 species and 4 varieties have been confi rmed.
Distribution:Roegneria contains 104 species and 23 varie ties dist ributed over Asia and South East Eu-
rope.
1.R.abol ini i (Drob.)Nevski
Nomenclature:R.abolinii (Drob.)Nevski , 1934 , Tr.S redneaz.Univ., ser.8B , 17:68.-Agropyron
326
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
abolini i Drob., 1925.Feddes Repe rt 21:42.-S emeiostachys abolini i (Drob.)Drob., 1941 , in F l.Uz-
bek.1:281.-E lymus abol inii (Drob.)Tzvel., 1968 , Rast.T sentr.Azii 4:214.
Type col lection:“N orthern Tian Shan:Zailiiskii Alatau , the Issyk River below the lake , larch forest , 6
VI 1915 , no.206 , Abolin Rive r” .Lecto type:TAK! Isolectotype:LE! Selected by Tzvelev 1976.
Description:Perennial wi thout creeping underground rhizomes.Culms tuf ted;80-115 cm tal l;gla-
brous.Leaf sheaths g labrous.Leaf blades f lat;on upper surfaces g labrous or scabrous and w ith w hi te vil-
lose on the nerves;on low er surface s glabrous;margins g labrous.Spikes e rect , nodding or slight ly nod-
ding , and w ith appressed rachis;10-20 cm long ;6-10 mm w ide.Rachis inte rnodes scabrous.S pikelets
dispo sition bi lateral i.e.no rmal;g reen;w ith 5-7 f lorets;w ith rachi lla joints minutely pubescent.Glumes
symme trical;unequal;scabrous o r scaberulous;first g lumes 10-15 mm long ;with 5-7 nerves;second
g lumes 11-16 mm long ;w ith 5-7 nerves;tips acuminate , unequal sided , and 1-too thed.Lemmas , at
least the fi rst 9-13 mm long ;w ith back scabrous o r scaberulous and appressed minutely pubescent;lem-
ma awned;lemma awn divaricate o r slight ly divaricate and straight;lemma awn 10-22 mm long.Palea
sho rte r than lemma;apex subobtuse;8-10 mm long;keels ci liate on 1/2 of upper part;scabrous on up-
per par t of back be tw een keels.Anthers y ellow ish-black;2.5-3.5 mm long .
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 18 , 19] .
Distribution:Central Asia:Tadzikistan , Kirgistan , China;on meadow s and slopes in mountain val-
ley , fo rest g lades;alt.2500-3000 m.
2.R.al tissima Keng
Nomenclature:R.alt issima Keng , 1963.In Keng &S.L.Chen , Acta Nanking U niv.(Bio l.)3(1):
53;1959.Fl.Ill.Pl.Prim .Sin.Gram:381 (in Chinese)[ 20] .-Elymus alt issimus (Keng)A.Love , 1984 ,
Feddes Rep.95:446.
Type col lection:China:Sichuan:Batang Xian:Tsa-wa-rung , No-Chio(Lajue), alt.3400 m , “ f re-
quenter in silv a pinuus.3400 m , IX 1935 , C.W.Wang 66409” .Ho lotype:PE !
Description:Perennial wi thout creeping underground rhizomes.Culms tuf ted;70-160 cm tal l;gla-
brous.Leaf shea ths glabrous and puberulent on the basal ones.Leaf blades f lat;on uppe r surfaces
sparsely pubescent;on lowe r surfaces g labrous;margins scabrous.Spikes erect;(10-)15-18(-20)cm
long .Rachis internodes scabrous and scabrous on tw o main angles;12-20 mm long ((the low est up to 30
mm).Spikelets dispo sitio n bilateral i.e.normal to w ith very sho rt peduncles(0.3 mm);g reen and slight ly
purple;w ith 3-5(-7)f lo rets;w ith rachilla joints densely pubescent;rachilla joints leng th 2-2.5 mm
long.Glumes oblong-lanceolate and symmetrical;unequal;glabrous and scabrous on the nerves;f irst
g lumes 3-5 mm long ;w ith 3-5 nerves;second glumes 4-6 mm long;with 5-7 nerves;tips acute.
Lemmas , at least the f irst 9-10 mm long;w ith back g labrous , hispid on the margins , w ith callus w ith
minute hairs on tw o sides , and w ith long callus hairs laterally (0.7 mm long);lemma awned;lemma awn
st raight or slight ly curved;lemma awn 12-22 mm long .Palea slight ly sho rte r than lemma;apex obtuse ,
rounded-subobtuse , and emarginate;8.5-9 mm long ;keels ciliate on 1/3 of upper par t;g labrous on back
betw een keels and setulous on upper par t of back betw een keels.Anthers y ellow ;2.5-3 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 21] .
Distribution:China:Sichuan;on slopes , along the edge of o r inside the pine forests , among bushes ,
and along st reams;al t.2400-3400 m.
3.R.anthosachnoides Keng
Nomenclature:R.anthosachnoides Keng , 1963 , in Keng &S.L.Chen , Acta Nanking U niv.(Biol.)3
327
　　　 四川农业大学学报 第 26 卷
(1):65;1959 , Fl.Il l.Pl.Prim.Sin.Gram:391(in Chinese).-E lymus anthosachnoides(Keng)A.Love ,
1984 , Feddes Repert.95:459.
Type collection:China:Yunnan:“Che-t se-lo Hsian , Pi-lo-Shan , ad monten crescens , al t.4000 m 26
VIII 1934 , H .T.T sai 58184” .Holo type:NAS!
Description:Perennial wi th short rhizomes and w ith fibrous roo ts.Culms lo osely tuf ted and solitary ;
60-75(-100)cm tall;glabrous.Leaf sheaths g labrous.Leaf blades f lat o r subinvolute;on upper sur-
faces pilose;on low er surfaces sparsely pilo se , hairy , and glabrous;margins w hi te villose.Spikes nodding
o r slightly nodding and w i th sparse remote spikelets;8-18 cm long;10-20 mm w ide.Rachis internodes
minute ciliate on tw o main angles , glabrous , and minute puberulous;6-17 mm long .Spikelets disposi-
tion bila teral i.e.normal and w ith very sho rt peduncles(0.4 mm);g reen and greenish purple;with 5-7
f lorets;w ith rachilla joints villose;rachil la joints leng th 2.5-3 mm long .G lumes lanceola te , linear-lance-
olate , and symmetrical;unequal;glabrous , scabrous o r scaberulous , and scabrous on the nerves;f irst
g lumes 5-7.5 mm long ;w ith 3-5 ne rve s;second g lumes 7-9 mm long ;w ith 3-5 nerves and 1-2
sho rte r weak nerves;tips acute and mucrona te.Lemmas , at least the f irst 10-13(-14)mm long;w ith
back hirsute , w ith 1.5 mm long hai rs on the margins and in uppe r part , and w ith callus wi th long pubes-
cence;lemma awned;lemma awn div aricate or slight ly divaricate and curved o r slight ly curved;lemma
awn 20-37 mm long.Palea slight ly shorter than lemma and sho rter than lemma;apex obtuse and round-
ed-subobtuse;9-11 mm long ;keels ciliate on 1/3 of upper part;pubescent on back betw een keels.A n-
ther s red-brow n;2 mm long .
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 21 , 22] .
Distribution:China:Yunnan , Sichuan , Gansu , Qinghai;on slope s , in forests and among bushes;al t.
1300-4000 m.
4.R.antiqua(Nevski)J.L.Yang , B.R.Baum et Yen var.parvigluma J.L.Yang , B.R.Baum et Yen
Nomenclature:var.parvigluma(Keng)J.L.Yang , Yen et Baum , comb.nov.-Roegneria parvig lu-
ma Keng , 1963 , in Keng &S.L .Chen , Acta Nanking Univ .(Bio l.)3(1):4 1959 , Fl.Ill.Pl.Prim.Sin.
Gram:376(in Chinese).-Elymus parvig lum is (Keng)A.Love , 1984 , Feddes Rep.95:467.
Type collection:China Sichuan:“Kang-ting ad latus fluminis , 30 VI 1951 , Yeon-Wen T sui 4162” .
Ho lotype:NAS!
Description:This v ariet differs f rom var.antiqua by i ts leaf blades glabrous on bo the surfaces and
sparsely villo se on nerves , and ciliate on margins;by its spikes slight ly nodding and no t f lexuous , 10-15
cm long , never up to 21 cm long , g reenish-purple or purplish-brow n;by i ts spikelets wi th 5-9 f lorets;by
its first g lume 2-3 mm long wi th 3(-5)nerves , second g lume 4-5 mm long w ith(3-)5 nerves;by its
lemma awn 10-17 mm long , no t 21-30 mm long ;by its palea keels ciliate on 1/3 o f upper part , and w ith
g labrous back betw een keels.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 4] .
Distribution:China:Sichuan , Gansu , Shaanxi Qinghai , Xizang;riversides , roadside s , on slopes and
meadow s;alt.1010-3800 m.
5.R.barbical la Ohwi
Nomenclature:R.barbical la Ohw i , 1942 , Acta Phy totax.Geobot.11(4):257.-E lymusbarbical lus
(Ohwi)S.L.Chen , 1988 , Bull.Nanjing Bo t.Gard.Mem.Sun Yat Sen , 1987:8.
Type collection:China:“China borealis:Ching-Lung-chiao vel Sei ryukyo in Prov.Chachar(T .Kanash-
iro 3605)” .Holo type:KYO!
328
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
Description:Perennial wi thout creeping underground rhizomes and w i th f ibrous roots.Culms tufted;
70-100 cm tall;glabrous.Leaf sheaths g labrous.Leaf blades f lat;on uppe r surfaces scabrous;on low er
surfaces scabrous;marg ins scabrous.Spikes erect and w ith sparse remo te spikelets;(12-)14-22 cm
long ;6-8 mm w ide.Rachis internodes minute ciliate on tw o main angles;12-22(-27)mm long.Spike-
lets disposit ion bi lateral i.e.no rmal;g reen;w ith 5-8 f lorets;with rachilla joints minutely puberulent;
rachilla joints leng th 2 mm long.Glumes lanceo late and symmetrical;unequal;glabrous and scabrous on
the nerves;f irst glumes 7-8 mm long ;w ith(3-)4-5 nerves;second g lumes 8-9 mm long;with 5-6
nerves;tips acuminate.Lemmas , a t least the fi rst 8-10 mm long;w ith back g labrous , scabrous on the
nerves , scabrous on the marg ins , with callus wi th minute hai rs on tw o sides , w ith callus w ith minute
hai rs , and w ith long callus hai rs laterally (0.6 mm);lemma awned;lemma awn st raight or slight ly
curved;lemma awn 20-30 mm long.Palea equal to lemma;apex rounded-subobtuse and emarginate;8-
10 mm long ;keels ciliate on 1/2 o f upper part;upper part of back appressed pube rulous between keels.
Anthers yellow ;2-3 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 21] .
Distribution:China:Hobei , Inner Mongolia , Shanxi;on slopes , f ringe o f fo rest , streamsides;al t.
1000-1400 m.
6.R.boriana (Meld.)J.L.Yang , Yen et B.R.Baum
Nomenclature:R .boriana(Meld.)J.L.Yang &B.R.Lu , 1991 , Can.J.Bot.69(2):287.Agropyron
borianum Meld., 1960 , in Bor.Grass.Burm .Cey l.Ind.And Pak:659.-E lymus borianus (Meld.)T .A.
Cope , 1982 , Fl.Pakistan 143:617.
Type collection:Pakistan:“Sw at:Kalam , 7000 f t., 24 V III 1955 , A.Rahman 229”.Ho lotype:K !
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
ed;90-100 cm tall;glabrous.Leaf sheaths densely long pilo se on the basal ones and glabrous in the up-
per ones.Leaf blades f lat;on uppe r surfaces g labrous;on low er surfaces glabrous;margins w hite vi llose.
Spikes e rect and w ith dense spikelets;12-17 cm long ;5-10 mm wide.Rachis internodes minute ciliate
on tw o main angles.Spikele ts dispo sitio n bilateral i.e.normal;g reen;w ith 3-5 flo rets;with rachilla
joints puberulent.Glumes bro adly lanceolate and symmetrical;unequal;g labrous , scabrous on the nerves ,
and w ith membranous margins;fi rst g lumes 7-8.5 mm long ;with 4-5 ne rves;second glumes 8.5-10
mm long;with 4-5 nerves;tips acuminate and awned(1-5 mm long).Lemmas , at least the fi rst 8-9.5
mm long ;w ith back g labrous and wi th long hai rs along the margins of the upper part;lemma awned;lem-
ma awn st raight , and 1-too thed o r bidentate at the base;lemma awn 10-12 mm long.Palea equal to
lemma;apex rounded-subobtuse;8-9.5 mm long;keels ciliate on upper part;w ith shor t setulose on back
of the upper part betw een keels.Anthers y ellow ;4-5.5 mm long.
Cytology:Chromosome number 2n=6x =42.Genomes StStStStYY[ 23] .
Distribution:Pakistan , Iran;on dry hillsides;al t.1800-2100 m.
7.R.brevig lumis Keng
Nomenclature:R.brev iglumis Keng , 1963 , in Keng &S.L.Chen , Acta Nanking Univ .(Biol.)3
(1):48-49;1959 , Fl.Ill.Pl.Prim .Sin.Gram.377 (in Chinese).-Elymus brev ig lum is (Keng)A.
Love , 1984 , Feddes Rep.95:467.
Type collection:China:Sichuan:“Shaw-Wu-Syh , a lateve sinst ro status ag risul turae , ad lectum fluvi-
alem novum crescens , 21 V II 1940 , K.L.Chu 7415”.Ho lotype:N! Paratype:no.238750 PE!
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms loo sely
329
　　　 四川农业大学学报 第 26 卷
tufted;45-60 cm tal l;g labrous.Leaf sheaths g labrous.Leaf blades involute;on upper surfaces sca-
brous;on low er surfaces g labrous;marg ins g labrous.Spikes nodding and wi th spa rse remo te spikelets;6
-10 cm long;6-8 mm w ide.Rachis internodes scabrous on tw o main angles;5-14 mm long.S pikelets
dispo sition bilateral i.e.no rmal;g reen;with 3-4 f lo rets;w ith rachi lla joints puberulent;rachi lla joints
length 2 mm long .Glumes ovate lanceolate and symmetrical;unequal;g labrous;fi rst glumes 3-4 mm
long;w ith 3 nerves;second glumes 5 mm long;with 4-5 nerves;t ips acute.Lemmas , at least the f irst
10 mm long ;w ith back sparsely minute spinulose and w ith callus wi th long pube scence;lemma awned;
lemma awn curved or slight ly curved;lemma awn 20-25 mm long.Palea equal to lemma;apex obtuse;10
mm long;keels ciliate on 1/3 of upper part;pubescent on back between keels.Anthers black;1.5 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 24] .
Distribution:China:Sichuan , Qinghai , Gansu;on slopes meadow , riverside meadow , forest glade
and fringe;al t.2750-3690 m.
8.R.brevipes Keng
Nomenclature:R.brevipes Keng , 1963 , in Keng &S.L.Chen , Acta Nanking Univ.(Bio l.)3 (1):
49;1959 , Fl.Ill.Pl.Prim.Sin.G ram:307 (in Chinese).-E lymus breviglum is (Keng)A.Love , 1984 ,
Feddes Rep.95:467.-Roegneria brev ig lumis var.brev ipes(Keng)L .B.Cai , 1997 , Acta Phy to tax.Sin.
35(2):160.
Type collection:China:Qinghai:“Hwang-yuan Hsien , austro-occidentalis Uo-Yueh Shiang , ad collis
cacumen saxo sum expo situm crescens.8 VIII 1944 , Y.L.Keng &P.C.Keng , no.5246” .Holo type:N!
Description:Perennial wi thout creeping underg round rhizomes and w ith fibrous roots.Culms tuf ted
and solitary;30-60(-85)cm tall;g labrous and puberulent or scabrous below the spikes.Leaf sheaths
g labrous and puberulent on the baqsal ones.Leaf blades f lat;on upper surfaces g labrous , scabrous , and
sparsely pubescent;on low er surfaces g labrous and spar sely pubescent;margins scabrous.Spikes curved
o r slightly curved o r slight ly nodding ;7-11(-14)cm long ;5-15 mm wide.Rachis internodes glabrous
and m inute ciliate on tw o main angles;6-10(-15)mm long .Spikelets dispo sitio n bila teral i.e.no rmal ,
slight ly secund , and wi th very sho rt peduncles(0.5-2 mm);g reen and slightly purple;with 4-7 f lo-
rets;w ith rachilla joints densely pubescent and pilo se;rachilla joints leng th 1.5-3 mm long.Glumes line-
ar-lanceolate;unequal;scabrous or scabe rulous;fi rst g lumes 1-3 mm long;with 2-3 ne rves;second
g lumes 3-4.5 mm long;with 3-4 nerves;tips acuminate and acute and mucronate.Lemmas , at least the
fi rst 8-11 mm long ;w ith back scabrous or scaberulous , g labrous , and wi th callus w ith minute hai rs and
longe r hair s on tw o sides;lemma awned;lemma awn divaricate o r slight ly divarica te;lemma awn 22-35
mm long .Palea shor ter than lemma;apex t runcate;7.5-9 mm long;keels ciliate on 1/3 of upper par t;
pubescent on back between keels.Anthers yellow;1.5-2.5 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 24] .
Distribution:China:Qinghai , Gansu , Xizang , Sichuan;on stony slopes and fo rest fringe;alt.2900-
4500 m.
9.R.cacumina(B.R.Lu et B.Salomon)L.B.Cai
Nomenclature:Elymus cacuminus B.R.Lu et B.Salomon , 1993 , Nord.J.Bo t.13(4):355.-R.ca-
cumina(B.R.Lu et B.Salomon)L .B.Cai , 1997 , Acta Phy to tax .Sin.35(2):160.
Type collection:China:Xizang :“162 km E o f Lhasa.At the pass between M aizhugonggar and Gongb-
ogyanda , 19 Sept.1988.J.L .Yang et al.880758” .Holotype:LD! Iso type:SAUTI !K !PE !
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms densely
330
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
tufted;25-40(-57)cm tall;g labrous.Leaf sheaths g labrous and puberulent on the basal ones.Leaf
blades invo lute o r subinvo lute;on uppe r surfaces hairy and scabrous;on low er surface s hairy and sca-
brous;margins scabrous.Spikes nodding;4-13 cm long ;8-12 mm wide.Rachis internodes scabrous
and scabrous on tw o main angles;1.2-3.2 mm long (the low est 3-6(-10)mm).Spikelets dispo sitio n
secund , slight ly secund , bilateral i.e.no rmal , and w ith very sho rt peduncles(0.5-0.9 mm);g reen and
g reenish purple;w ith 3 -6 f lorets;w ith rachilla joints minutely pubescent and pilo se;rachilla joints
length 1.5 -4 mm long.Glumes lanceolate and ovate lanceolate;unequal;glabrous , scabrous on the
nerves , and wi th membranous margins;fi rst glumes 2-6 mm long;w ith (1-)2-5 nerves;second
g lumes(2.5-)3-9 mm long;with 3-5(-7)nerves;tips acute and mucronate.Lemmas , at least the
fi rst 8-11 mm long ;with back scabrous o r scabe rulous , appre ssed minutely pubescent , and wi th callus
only w ith minute hair s on ventral side and longer hai rs on tw o sides;lemma awned;lemma awn curved;
lemma awn 15-30 mm long.Palea slightly sho rter than lemma;apex obtuse and rounded-subobtuse;7.5
-9 mm long;keels ciliate on who le leng th;with g labrous back o r pube scent on back be tw een keels.A n-
ther s yellow and yel lowish-purple;1.3-2 mm long.
Cytology:Chromosome number 2n=4x =28.Genome StStYY[ 25] .
Distribution:China:Xizang , on ro cky slopes , dry bushes , along st ream in the valley and roadsides;
alt 4300-5000 m.
10.R.canaliculata (Nevski)Ohwi
Nomenclature:R.canal iculata (Nevski)Ohwi , 1966 , Add.Cor r.Fl.A fhan.76.-Agrop yron canal-
iculatum Nevski , 1932 , Ize.Bo t.Sada.AN SSSR.30:509.-E lymus canal iculatus (Nevski)Tzvel.,
1968 , Rast.Tsentr.Azii.4:220.-E lymus longearistaus ssp.canal iculatus (Nevski)Tzvel., 1972 ,
Nov .Sist.Vyssch.Rast.9:62.Agropy ron longe-aristatum var.ai ttchisoni i Boiss., 1884 , Fl.Or.5:660.
-Agrop yron ai tchisonii (Boiss.)Candarg y , 1901 , Monog r.tes phy ts ton Krithodon:40.
Type collection:Tadzhikistan:“Darvaz , Peter the Great Range , south slope , glacier Vereshkai , al t.
3350 m , 29 VII 1899 , no.2500 , V.E.Lepskii” .Holo type:LE !
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms densely
tufted;25-70 cm tal l;glabrous.Leaf sheaths g labrous and sparsely scabrous o r scaberulous.Leaf blades
involute or subinvolute;on upper surfaces g labrous , scabrous o r sparsely pubescent , and glaucous;on
low er surfaces g labrous;marg ins scabrous.Spikes nodding and w ith spar se remote spikelets;6-20 cm
long;6-15 mm w ide.Rachis internodes scabrous and scabrous on tw o main ang les;10-20(-25)mm
long.Spikelets disposit ion bi lateral i.e.normal and w ith very sho rt peduncles(up to 0.8 mm);g reen and
g reenish purple;w ith (4-)6-7(-9)f lorets;with rachi lla joints minutely pubescent and pilo se;rachilla
joints leng th 2-3 mm long.Glumes linear-lanceolate , ellipt ic-lanceo late , and symmetrical;unequal;sca-
brous or scabe rulous , scabrous on the nerves , and w ith membranous margins;f irst g lumes 3-9 mm long;
w ith 5-7 nerves;second glumes 4-10 mm long;w ith 5-7 nerves;tips acute and mucronate and awned ,
1-5 mm.Lemmas , at least the fi rst 8-12 mm long ;w ith back scabrous o r scabe rulous , appressed min-
utely pube scent , w ith callus w ith minute hair s on tw o sides , and w ith callus wi th minute hairs;lemma
awned;lemma awn divaricate o r slightly div aricate and the low er part caniculate;lemma awn 25-50 mm
long.Palea slight ly sho rter than lemma and equal to lemma;apex obtuse o r rounded-subobtuse;7-10 mm
long;keels ciliate on 1/2 o f uppe r part;w ith g labrous back.Anther s y ellow and yellowish-purple;4-5
mm long .
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 25] .
Distribution:Tadzhikistan , Russia , Iran , Afghanistan , China;on stony slopes and rocks;alt.3200-
331
　　　 四川农业大学学报 第 26 卷
4000 m.
11.R.caucasica C.Koch
Nomenclature:R.caucasica C.Koch , 1848 , Linnaea 21:413.-Trit icum roegneri Griseb., 1852 , Fl.
Ross.4:339.-Agropy ron roegneri (G riseb.)Boiss., 1884 , Fl.O r.5:662.-Ag.caucasicum (C.
Koch)Grossh.1939 , Fl.Kavk.1:327.-Elymus caucasicus (C.Koch)Tzvel., 1972 , 9:61.-Roegne-
ria linczevski i Czopan., 1970 , Nov.Sist.Vyssch.Rast.6:24.
Type col lection:Russia:Caucasus:“In den Walde rn Daghestans , Herrschaft Kuba , C.Koch” , alt.150
-310 m.Ho loty e:B! dest royed , Neo type:K ! Isoneotype:K! (B.R.Baum , C.Yen & J.L .Yang ,
2008).
Description:Perennial wi th short rhizomes and w ith fibrous roo ts.Culms lo osely tuf ted;50-100 cm
tall;glabrous , sparsely scabrous below spikes , and puberulent on the low er nodes.Leaf sheaths glabrous
and spa rsely pubescent.Leaf blades f lat;on upper surfaces g labrous , scabrous , and hairy ;on low er sur-
faces scabrous and sparsely hairs;margins scabrous.Spikes nodding o r slight ly nodding and w ith sparse
remo te spikelets;(9-)13-15 cm long ;8-11 mm w ide.Rachis internodes scabrous and scabrous on tw o
main ang les;10-15 mm long.Spikelets dispo sitio n bi lateral i.e.no rmal and wi th very sho rt peduncles(up
to 0.3 mm);g reen;with 4-6 flo re ts;w ith rachilla joints pilose;rachi lla joints leng th 1-3 mm long.
Glumes oblong-lanceolate;unequal;glabrous and scabrous on the nerves;fi rst g lumes 2 -4 (-5)mm
long;w ith 3 nerves;second glumes 4-5 (-9)mm long;w ith(4-)5-6 nerves;t ips acuminate and a-
cute and mucronate.Lemmas , at least the first 11-12(-14)mm long ;with back pilo se , hispid on the
marg ins , and w ith callus wi th minute hairs on tw o sides;lemma awned;lemma awn straight and divaricate
o r slightly divaricate;lemma awn 24-32 (-38)mm long .Palea shor ter than lemma;apex rounded-sub-
obtuse , t runcate , and bidentate;10-11.5 mm long;keels ciliate on whole length;pubescent on back be-
tween keels and pilose on back betw een keels.Anthers yellow or dark purple;3-3.5(-5)mm long .
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 3 , 25] .
Distribution:Russia , Tukumania , Iran;in forests , forest glade , among shrubs;al t.2000-2200 m.
12.R.ci liaris(Trin.)Nevski
Nomenclature:R.ci l iaris (Trin.)Nevski , 1933 , Acta Inst.Bot.Acad.Sci.URSS ser.I , 1:14.
-Tri ticum cil iare Trin., 1883 , Mem .Acad.Sci.St.Petersb.Sav .Etr.2:246.-Agropy ron ci l iare
(Trin.)Franch., 1884 , Nouv.Arch.Mus.Hist.Nat.Paris II , 7:151.-Brachypodium ci liare (Trin.)
Maxim., 1879 , Bull.Soc.Imp.Nat.Mosc:71.-Agropy ron semicostatum var.ci l iare (Trin.)Hack.,
1903 , Bull.Herb.Boiss.II , 3:506.-Elymus ci liaris(Trin.)Tzvel., 1972 , Nov.Sist.Vyssch.Rast.10:
22.-Agropy ron cil iare subsp.minor(M iquel)T .Koyama , 1987 , G rass of Japan Neibour.Reg ions 483.
Type collection:China:Beijing , “In Pratis probe Kantai VI no.14 Bunge”(Holo type ?).
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tufted and solitary;40-100 cm tall;g labrous , pubescent on low er internodes , and g laucous.Leaf
sheaths g labrous.Leaf blades f lat;on upper surfaces glabrous;on low er surfaces glabrous;margins sca-
brous.Spikes nodding o r slight ly nodding;10-22 cm long ;8-10 mm w ide.Rachis internodes glabrous
and scabrous on tw o main angles;10-15 mm long (the lowest up to 25 mm long).Spikelets dispo sitio n
bilateral i.e.no rmal;green;with (6-)7-12 f lorets;with rachilla joints minutely pubescent;rachilla
joints leng th 0.5-1.5 mm long .Glumes oblong-lanceo late and asymmetrical;unequal;g labrous and mar-
gin nerves ciliate;f irst glumes 7-8 mm long ;w ith 5-7 nerves;second g lumes 8-9 mm long;with 5-7
nerves;tips acute and mucronate , 1-toothed , and unequal sided (o r 2 toothed).Lemmas , at least the
332
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
fi rst 8-9 mm long;w ith back hirsute , long ciliate on the margins , w ith callus w ith minute hai rs on tw o
sides , and wi th callus only wi th minute hai rs on ventral side;lemma awned;lemma awn div aricate or
slight ly divaricate , bidentate at the base , and 1-to othed;lemma awn(10-)15-20(-30)mm long .Pa-
lea much shorter than lemma;apex obtuse and rounded-subobtuse;6 mm long;keels ciliate on 1/2 of up-
per par t;with g labrous back.Anthers y ellow ;1.5-2 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 26 , 27] .
Distribution:China , Russia , Korea Pennisula , Japan;roadside o r slopes;al t.300-1380 m .
12a.var.amurensis(Drob.)Yen , J.L.Yang et B.R.Baum
Nomenclature:R.amurensis(Drob.)Nevski , 1934 , Fl.SSSR.2:606.-Agropy ron amurense Drob.
1914 , Tr.Bot.Muz.AN 12:50.-Agropy ron ci l iare var.lasiophy l lum Kitag aw a , 1936 , Rep.Ist.Sci.
Exp.A nch.IV pt.4:60 , 98.-Ag.ci liare var.pi losum (Korsh.)Honda , 1965 , Fl.Jap.154 (in Eng-
lish).-Elymus amurensis (Drob.)S.K.Cherepanov , 1981 , So sud , Rast.URSS.348.-E.ci liare ssp.
amurensis(Drob.)Tzvel., 1972 , Nov.Sist.Vyssch.Rast.9:61.
Type collection:Russia:Far East:“ Soyuznoe village downst ream of Amur , in illuminated limestone
cli ff s 19 VI 1891 , S.Korzhinskii” .Ho lotype:LE!
Description:Perennial w ithout creeping underg round rhizomes.Culms lo osely tuf ted;80 -130 cm
tall;glabrous.Leaf sheaths g labrous and w ith antro rse hairs.Leaf blades f lat;on upper surfaces densely
hai ry ;on low er surface s w hi te villose on the nerves;margins w hite villo se.Spikes erect , nodding or
slight ly nodding , and w ith sparse remote spikelets;10-22 cm long ;8-10 mm w ide.Rachis internodes
scabrous on two main angles;9-13(-15)mm long.S pikelets disposit ion bilateral i.e.no rmal;g reen;
w ith 5-7(-9)flo rets;w ith rachilla joints minutely puberulent;rachi lla joints length 2-3 mm long.
Glumes oblong-lanceolate and symmetrical;unequal;scabrous on the nerves , g labrous , and w ith ciliate
marg ins on upper part;first g lumes 8-11 mm long;w ith 3-5(-7)nerves;second g lumes 9-13 mm
long;w ith 5-7 nerves;tips acuminate and ending in a point.Lemmas , at least the first 9-12 mm long;
w ith back appressed minutely pube scent , hispid on the margins , and w ith callus w ith minute hai rs on tw o
sides;lemma awned;lemma awn diva ricate or slight ly divarica te , f rom the prominent midnerves ending in-
to an aw n , and bidentate at the base;lemma awn 2-2.5 mm long.Palea much sho rte r than lemma;apex
rounded-subobtuse;7 mm long;keels ci liate on 1/3 of upper par t;w ith g labrous back.Anther s yellow ;
2.5 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes:StStYY[ 27 , 28] .
Distribution:Russia , China;on meadow s , fo rest g lades , riverside sands and pebbles , stony slopes.
12b.var.japonensis(Honda)Yen , J.L.Yang et B.R.Lu
Nomenclature:var.japonensis(Honda)Yen , J.L.Yang et B.R.Lu , 1988 , Acta Bot.Yunnan.10
(3):269.-Agrop yron japonicum Honda , 1927 , Bo t.Mag.Tokyo 41:384.-Agrop yron ci liare var.p i-
losum(Korsh.)Honda , 1965 , Fl.Jap.154(in Eng lish).-E lymus ci liaris(Trin.)Tzvel.subsp.japoni-
cus A.Love , 1984 , Feddes Rep.95:459.
Type collection:Japan:“Hondo:Kasukabe , prov.Mushashi(K.HIsauchi , anno 1926)”.Holotype:TI !
Description:It differs f rom var.ci liaris by its spikes erct o r subnodding , and g lumes marg in nerves
w ithout cilia.
Cytology:Chromosome number 2n=4x =28.Genome StStYY[ 26 , 27] .
Distribution:China , Japan;Roadsides and slopes;alt.300 -1000 m.
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　　　 四川农业大学学报 第 26 卷
13.R.curvata (Nevski)Nevski
Nomenclature:R.curvata(Nevski)Nevski , 1934 , A cta Univ.As.Med.Ser.8B , Bot.Fasc.17:67.
-Agrop yron curvatum Nevski , 1932 , Izv.Bot.Sada AN SSSR.30:629.-E lymus f edtschenkoi Tzvel.,
1973 , Nov.Sist.Vyssch.Rast.10:21.-Roegneria f edtschenkoi (Tzvel.)N.R.Cui , 1982 , in Claves Pl.
Xinjiang , 1:158.
Type collection:Kazakhstan:“Nothern slope of ketmenskie , the kirg jiai ravines , Podgerny village , 19
VII 1910 , no.2260 A.M ichalson” .Holo type:LE !
Description:Pe rennial w ith short rhizomes and wi thout fibrous ro ots.Culms loo sely tufted and stout;
50-120 cm tall;glabrous.Leaf sheaths g labrous and puberulent on the basal ones.Leaf blades flat o r in-
volute;on upper surfaces glabrous and scabrous;on low er surfaces g labrous and scabrous;margins sca-
brous and glabrous.Spike s erect or slight ly curved , and w i th dense spikelets;7-16 cm long;2.8-5 mm
w ide.Rachis internodes scabrous on tw o main ang les;7-15 mm long .Spikelets disposi tion secund and
slight ly secund;g reenish purple;w ith(3-)5-6 flo rets;with rachilla joints minutely pube rulent;rachilla
joints leng th 2-3 mm long.Glumes broadly lanceolate;subequal;scabrous , scabrous on the ne rve s , and
w ith membranous margins;f irst g lumes 10-18 mm long;with 5-7 nerves;second glumes 10.5-18 mm
long;w ith 5-7 nerves;t ips acuminate and acuminate and ending in a point.Lemmas , at least the fir st 10
-14 mm long;w ith back hirsute and wi th callus w ith minute hairs and longe r hai rs on tw o sides;lemma
awned;lemma awn st raight , curved o r slight ly curved , and div aricate or slight ly div aricate;lemma awn 25
-37 mm long .Palea sho rter than lemma and subequal to lemma;apex subobtuse and rounded-subobtuse;
9-13 mm long ;keels ciliate on 1/2 of upper par t;w ith glabrous back.Anthers yellow and yellow ish-pur-
ple;2.5-3.2 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 29] .
Distribution:Russia , China , Mongolia;on sw ale , stony slopes , among bushes , pebbles;alt.1100-
3800 m.
14.R.dolichathera Keng
Nomenclature:R.dolichathera Keng , 1963 , in Keng and S.L.Chen , Acta Nanking U niv.(Bio l.)3
(1):19;1959 , Fl.Ill.Pl.Prim .Sin.Gram:352(in Chinese).-E lymus dol ichatherus (Keng)A.Love ,
1984 , Feddes Rep.95:453.-Roegneria dol ichathera var.glabri f ol ia Keng , 1963 , in Keng & S.L.
Chen , Acta Nanking Univ.(Bio l.)3(1):19.
Type collection:China:Sichuan:“ Tien-chuan Hsien , in lit inere a Tsin-t sao-ping ad Hsuan-kou , sub
si lvis al t.2350 m , 4 VI 1936 , K.L.Chu 2697” .Holo type:NAS!
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;60-90 cm tall;glabrous and cove red w i th pruinose on the nodes.Leaf sheaths glabrous
and ci lia te on the margins.Leaf blades f lat or loo sely involute;on upper surfaces densely hairy , rarely gla-
brous;low er surfaces glabrous;marg ins glabrous.Spikes erect , slight ly nodding , or slightly curved;12-
17 cm long ;5-6 mm w ide.Rachis inte rnodes scabrous and minute pube rulent on the nodes;8-10 mm
long (the low est up to 30 mm).Spikelets disposi tion bilateral i.e.no rmal;g reen;w ith 3-6 f lo rets;w ith
rachilla joints pube rulent;rachilla joints leng th 2 mm long .G lumes oblong-lanceolate;unequal;glabrous
and scabrous on the nerves;fi rst g lumes 6-7 mm long;w ith 3-5 nerves;second g lumes 7-8 mm long;
w ith 3-5 nerves;tips acuminate and ending in a point (mucro 4-5 mm).Lemmas , at least the f irst 9-
10 mm long ;w ith back scaberulous on upper part , w ith cal lus w ith minute hairs and longer hai rs on tw o
sides;lemma awned;lemma awn st raight;lemma awn (15-)25-32 mm long.Palea slightly sho rter
than lemma and equal to lemma;apex obtuse and emarginate;9-10 mm long;keels ci lia te on 1/3 of upper
334
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
part;w ith glabrous back.Anthers yellow ;1.8-2 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 1] .
Distribution:China:Sichuan , Hubei , Shaanxi;in fo rests , on slopes , riversides , st reamsides;al t.
570-3090 m.
15.R.dura Keng
Nomenclature:R.dura (Keng)Keng , 1957 , Clav.Gen.&Sp.G ram.Sin:74 ,185.1959 , Fl.Il l.Pl.
Prim.Sin.G ram:382.-Brachypodium durum Keng , 1941 , Sunyatsenia 6(1):54.-Elymus sclerus A.
Love , 1984 , Feddes Rep.95:448.-Roegneria dura Keng var.vari ig lumis Keng , 1963 , in Keng &S.
L.Chen , Acta Nanking Univ.(Bio l.)3 (1):54;1959 , Fl.Ill.Pl.Prim.Sin.Gram.382(in Chinese).
Type collection:China:Gansu:“M t.Kwang Kei , Tebbu land , Min Shan , south-western Kansu prov-
ince , alt itude 4200 meters , October 1925 , by J.F .Rock , no.13711(Nat ional Herbarium.no .1385150)” .
Ho lotype:US!
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted and soli tary;55-85 cm tall;g labrous , sparsely scabrous below spikes , and covered w ith
pruinose pubescence on the nodes.Leaf sheaths glabrous and wi th ret rorse hai rs on the basal ones.Leaf
blades flat and invo lute on the margins;on upper surfaces spar sely pubescent and scabrous;on low er sur-
faces glabrous;margins glabrous.Spikes nodding , w ith dense spikelets , and w ith sparse remo te spikelets;
5-11 cm long ;7-15 mm wide.Rachis internodes scabrous on tw o main angles;7-12 mm long (the low-
est up to 30 mm).Spikelets dispo sitio n bilateral i.e.normal , secund , and w ith very sho rt peduncles(0.8
-1.5(-2)mm long);g reen , g laucous g reen , and purplish brow n;with 3-5(-7)f lo rets;with rachil-
la joints minutely pube rulent and pi lose;rachilla joints leng th 1.8-2.8 mm long.Glumes linear-lanceolate
and ovate lanceo late;unequal;g labrous , and scabrous on the nerves;first g lumes(2-)3-6(-7)mm
long ;with(1-)3(-5)nerves;second g lumes 4.5-9.5 mm long ;with 3-5(-7)ne rves;tips acuminate
and acute and mucronate.Lemmas , at least the fi rst 9-11 mm long;w ith back scabrous or scaberulous ,
appressed minutely pubescent , minutely hi rsute on the nerves , and wi th cal lus only w i th minute hai rs and
longe r hair s on tw o sides;lemma awned;lemma awn curved ;lemma awn 15-28 mm long.Palea slight ly
sho rte r than lemma and equal to lemma;apex obtuse and rounded-subobtuse;5-11 mm long;keels ciliate
on 1/3 of upper part;w ith g labrous back and pubescent on back be tw een keels.A nthers yellow , black ,
and dark purple;1.5-2 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 24] .
Distribution:China:Gansu , Qinghai , Xinjiang , Sichuan , Xizang;on slopes , meadow s and roadsides;
alt.2440-3900 m .
16.R.glaucif olia Keng
Nomenclature:R.g lauci f olia Keng , 1963 , in Keng and S.L.Chen , Acta Nanking Univ.(Biol.)3
(1):57;1959 , Fl.Ill.Pl.Prim.Sin.G ram :384(in Chinese).-Elymus caesi folius A.Love , 1984 , Fed-
des Rep.95:448.
Type collection:China:“Xizang :Maga , 9 IX 1952 , P.C.Tsoong 5365” .Holo type:PE!
Description:Pe rennial w i th sho rt rhizomes and wi thout fibrous roo ts.Culms tuf ted;30-60 cm tall;
g labrous.Leaf sheaths glabrous and pube rulent on the basal ones.Leaf blades f lat and subinvolute;on up-
per surfaces scabrous;on low er surfaces glabrous;margins scabrous.Spikes erect and w i th sparse remote
spikelets;6.5-10 cm long;4-5 mm w ide.Rachis internodes scabrous on tw o main angles;8-16 mm
long.Spikelets disposit ion bilate ral i.e.no rmal;g reenish purple and g laucous g reen;with 3-5 f lorets;
335
　　　 四川农业大学学报 第 26 卷
w ith rachilla joints puberulent;rachilla joints leng th 1-1.3 mm long.Glumes oblong-lanceolate;une-
qual;scabrous on the nerves and w ith membranous margins;fi rst glumes 4 -7 mm long;w ith 3 -5
nerves;second g lumes 6-8 mm long;with 3-5 ne rv es;tips acuminate and acute.Lemmas , at least the
fi rst 9-11 mm long ;w ith back scabrous o r scaberulous , scabrous on the nerves , and wi th callus wi th mi-
nute hai rs on tw o sides;lemma awned;lemma awn curved o r slight ly curved;lemma awn 15-30 mm
long.Palea equal to lemma and slightly sho rter than lemma;apex t runcate;9-11 mm long ;keels ciliate
on 1/3 of upper par t;upper part of back appressed puberulous betw een keels.A nthe rs black;2 mm long.
Cytology:Chromosome number 2n=6x =42.Genomes StStStStYY [ 23] .
Distribution:China:Xizang;te rrace of river valley;alt.3400-3860 m.
17.R.glaucissima(M.Pop.)J.L.Yang , B.R.Baum et Yen
Nomenclature:R.g laucissima(M .Pop.)J.L .Yang , Baum et Yen comb.nov.-Agrop yron glaucis-
simum M.Pop., 1938 , Bull.Mosk.Obshch.Isp.Prir., Otd.Bid.47:84.-Roegneria g laucissima (M .
Pop.)Filat., 1969 , Ill.Opred.Rast.Kazakhast.1:114(comb.inv alid).
Type collection:T adzhikistan ?:Zailinsky Alatau:“Mount Alatau transiliensis , ad initia f l.Tachilik in
angust ii s Tschizmunak , in glareosis g raniticis , 11 VII 1934 , M.Popov”.Ho lotype:MW!
Description:Perennial wi th short rhizomes and wi thout fibrous roo ts.Culms loosely tuf ted;50-100
cm tall;glabrous and glaucous.Leaf sheaths glabrous.Leaf blades flat;on upper surfaces glabrous and
g laucous;on low er surfaces glabrous;margins scabrous and ciliate.Spikes nodding;10-17 cm long.Ra-
chis internodes scaberulous.Spikelets disposi tion bi lateral i.e.normal;purple-g laucous;with rachilla
joints minutely pubescent.Glumes oblong-lanceolate;unequal;scaberulous near the apex;fi rst glumes 5
mm long ;w ith 3 nerves;second glumes 7 mm long;with 3 nerves;tips acute and awned , (1-)3-7(-
10)mm long.Lemmas , at least the f irst 9-12 mm long ;w ith back sparsely minute spinulose to w ith cal-
lus beset w ith fairly densely pilo se;lemma awned;lemma awn divaricate o r slight ly divaricate and biden-
ticulate a t the base;lemma awn 17-30 mm long.Palea equal to lemma;apex t runcate and emarginate;
keels ci lia te on upper part;w ith g labrous back.A nthe rs y el low ;(2-)2.7-3.4 mm long .
Cytology:Chromosome number 2n=6x =42.Genomes StStStStYY[ 30] .
Distribution:Central Asia;on stony slopes , scree and sw ales in the middle and upper mountain bel t.
18.R.gmelinii (Ledeb.)Kitag
Nomenclature:R.gmel inii (Ledeb.)Kitag ., 1939 , Rep.Inst.Sc.Res.Manch.3.App.1 , 91.-
Trit icum caninum var.gmel inii Ledeb., 1829 , Fl.Alt.1:118 , non Tri ticum gmelini i Trin., 1838 , non
Agropy ron gmelini i Scribner &Smith , 1897.-Agropy ron turczaninovi i Drob., 1914 , T r.Bo t.Muz.AN
SSSR.12:47 ? -Roegneria turczaninov ii (Drob.)Nevski , 1934 , Fl.SSSR.2:607.-Semeiostachy s turc-
zaninov i i (Drob.)Drob., 1941 , F .Uzbek.1:539.-Elymus gmel inii (Ledeb.)Tzvel., 1968 , Rast.
Tentr.Azii.4:216.-Trit icum rupestre Turcz.ex Ganesch., 1915 , Tr.Bot.Muz.AN SSSR.13:33.
Type collection:Russia:“E montibus altaicis , 1827 , Ledebour”.Ho lotype:LE!
Description:Perennial wi th short rhizomes and wi thout fibrous roo ts.Culms loosely tuf ted;60-100
cm tall;glabrous.Leaf sheaths g labrous to w ith re tro rse hai rs on the basal ones.Leaf blades f lat or invo-
lute;on upper surfaces sparsely pilo se;on low er surfaces scabrous;margins scabrous.Spikes erect;7-15
cm long .Rachis internodes scabrous and densely spinulose;10-22 mm long.Spikele ts dispo sition se-
cund;purplish brow n;with 4-7 f lorets;with rachilla joints pube rulent;rachi lla joints leng th 1.5-2 mm
long.Glumes linear-lanceolate;unequal;scabrous or scaberulous;first glumes 6-11.5 mm long;w ith 5
-7 nerves;second g lumes 9-12 mm long;with 5-7 ne rves;tips acuminate or acuminate and ending in a
336
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
point.Lemmas , at least the fi rst 9-12 mm long;w ith back scabrous or scaberulous and w i th cal lus w ith
minute hairs and longer hair s on tw o sides;lemma awned;lemma awn divaricate o r slight ly div aricate and
st raight;lemma aw n 2-4.3 mm long .Palea equal to lemma and slightly sho rter than lemma;apex round-
ed-subobtuse and emarginate;9-11.5 mm long ;keels ciliate on 1/3 of upper part;glabrous on back be-
tween keels and top w ith sho rt setulose between keels.Anthers dark yellow ;(2-)2.7-3.5 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 31] .
Distribution:Russia , China , Mongolia;in meadow s , forest g lades , pebbles , sparse forests , among
bushes , roadsides;al t.1350-2300 m.
19.R.grandis Keng
Nomenclature:R.grandis Keng , 1963 , in Keng and S.L.Chen , Acta Nanking U niv.(Bio l.)3(1):
45;1959 , Fl.Ill.Pl.Prim .Sin.Gram:371(in Chinese).-E lymus grand is (Keng)A.Love , 1984 , Fed-
des Rep.95:458.
Type collection:China:Shaanxi:“Huh Hsien , Fen-hw ang Shan , ad declivi tatem col li s crescens , 7 VII
1951 , B.C.Kuo 149” .Holo type:PE!
Description:Perennial w i th sho rt rhizomes and w ithout fibrous roo ts.Culms solitary and loo sely tuf t-
ed;80-100 cm tall;glabrous.Leaf sheaths g labrous.Leaf blades f lat;on upper surfaces g labrous or sca-
berulous;on low er surfaces glabrous;margins g labrous.Spikes erect , w ith spar se remote spikelets , and
w ith appressed to rachis;20-25 cm long.Rachis internodes scabrous on tw o main angles;15-20 mm
long (the low est up to 40 mm).Spikelets disposi tion bi lateral i.e.no rmal;g reen;w ith 12 flo rets;w ith ra-
chilla joints puberulent;rachilla joints length 1.5-2 mm long .Glumes oblong-lanceola te;unequal;gla-
brous , scabrous o r scaberulous , and w ith membranous margins;f irst glumes 10-14 mm long;with 5-7
nerves;second g lumes 11-15 mm long;with 5-7 nerves;tips acute.Lemmas , at least the first 14 mm
long;with back glabrous , with callus with minute hairs , with callus covered w ith w hite hairs , and w ith long callus
hairs laterally (1 mm long);lemma not awned but mucronate.Palea much sho rter than lemma(by 1/3-1/4);a-
pex rounded-subobtuse;7-11 mm long;keels wi thout cilia;pubescent on back between keels.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 32] .
Distribution:China:Shaanxi;on slopes.
20.R.heterophyl la(Bornmǜller ex Melderis)C.Yen , J.L.Yang et B.R.Baum
Nomenclature:R.heterophy l la (Bo rnmǜller ex M elderis)C.Yen , J.L.Yang et B.R.Baum , 2008.
Novon 18:405-407;-Agropy ron panorm itanum Parlato re var.heterophy l la Bo rnmǜller ex M elderis ,
1960.In K.H .Rechinger f., Zur Flora von Sy rien und Libanon.Ark.Bot.(Ser.2)5:69;E lymus panor-
mitanus(Parlatore)Tzvelev var.heterophy l lus (Bornmǜller ex M elderis)B.Salomon , 1994.Nordic J.
Bot.14:18-19.
Type collection:“Lebanon:Ain Zhalta reg.subalp., in declivi tatibus occ., 1200-1300 m , Bo rnmǜller
13036” .Ho lotype:JE! Iso type:BM!G!LD!
Description:Perennial tuf ted , without rhizomes;culms e rect o r geniculate at base , ca.100 cm , gla-
brous to densely pilo se a t upper part of internode , nodes glabrous , Leaf sheaths g labrous or pilo se;leaf
blades flat , ca.25 cm long , 2.5-5 mm w ide , scabrous to vi llous adaxially , abaxial ly g labrous , scabrous
o r pi lose , Spikes erect o r slightly curved , tenuous , 10-16 , 5 cm , 7-11 spikelets per spike , loo sely ar-
ranged;rachis internodes 10-18 mm long , 1-1.7 mm w ide , glabrous o r sparsely scabrous on the back ,
angles setulo se , Spikelets g reen , nar row ly lanceola te , subsessile , pressed close to rachis , (12 -)15-20
mm (excepted aw n), 2 to 3 flo rets;inte rnode of rachilla setulose and brist ly on uppe r par t;glumes sube-
337
　　　 四川农业大学学报 第 26 卷
qual , linear-laceo late or lanceo late , co riaceous , with nar row transparent scabrous ma rg ins , low er glumes
16-24 mm long , 1.6 -2.5 mm w ide;upper glume 17-24.5 mm long , 1 -2.5 mm w ide , (5-)7-9
nerved , nerves scabrous , adaxial ly densely pube rulous becoming densely pilose near the base o f the
g lumes , tip g radually narrow ing into mucro or a ca , 5 mm awn;lemmas narrow ly lanceolate , g labrous on
back , g radually scabrous on upper part.Pubescent near the base , 9-15 mm long , ca.2 mm wide , 5 nerved
clearly at upper part , (10-)20-32(-35)mm awn;callus sparsely setulose;palea slightly shorter than lemma ,
tip broadly rounded , ciliate along apical 1/3 from tip of 2 keels;anthers yellow , 3-5 mm long.
Cytology:Chromosome number 2n=6x =42.Genomes StStStStYY[ 33] .
Distribution:Lebanon , Israle and Sy ria;mountain w oods , shaley abandoned f ield on hills and forest;
alt.500-1500 m.
21.R.hondai Kitag
Nomenclature:R.hondai Kitag., 1942 , Rep.Inst.S ci.Res.Manch.6 (4):118-119.-R.hondai
var.f ascinata Keng , 1963 , in Keng and S.L.Chen , Acta N anking Univ.(Biol.)3(1):26;1959 , Fl.Ill.
Pl.Prim .Sin.Gram:361(in Chinese);H .L .Yang , 1980 , in F l.Reip.Pop.Sin.9(3):70.-Elymus hon-
dae (Kitag .)S.L .Chen , 1987 , Bul l.Nanjing , Bo t.Gard.Mem.Sun Yat Sen , 1987:9.
Type collection:China:Hebei:“ Prov.Jehe:in monte Wu-lung-shan (Nakai , Honda & Kitag aw a ,
Sept.1 , 1933;Sept.2 1933)” .Holo type:?
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;70-100 cm tall;glabrous.Leaf sheaths g labrous and w ith re tro rse hairs on the basal ones.
Leaf blades f lat;on upper surfaces scabrous and nerves spar sely hi rsute;on low er surfaces g labrous;mar-
gins g labrous.Spikes e rect , curved o r slight ly curved , and w ith sparse remote spikele ts;13-15(-20)cm
long .Rachis internodes scabrous on tw o main angles;10-20 mm long (the low est up to 28 mm).Spike-
lets disposit ion bi lateral i.e.normal;g reen and purple-tinged;w ith 5 f lorets;with rachil la joints minutely
puberulent;rachilla joints length 1.5-2 mm long.Glumes bro adly lanceolate;unequal;glabrous and sca-
brous on the nerves;fi rst glumes 7-10 mm long;with 3-5 nerves;second g lumes 8.5-11 mm long;
w ith 4-6 nerves;tips acuminate and acute and mucronate.Lemmas , at least the f irst 10 mm long;w ith
back scabrous on the nerves , scabrous on the margins , and wi th callus w ith minute hai rs and longer hai rs
on tw o sides (hairs 0.5-1 mm);lemma awned;lemma awn st raight , 1-too thed , and bidentate a t the
base;lemma aw n(15-)20-25 mm long .Palea slight ly sho rte r than lemma;apex obtuse and emarginate;
9.5 mm long;keels ciliate on 1/2 o f upper part;upper part o f back appressed puberulous betw een keels.
Anthers yellow ;2.5 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 34] .
Distribution:China:Hebei , Jining , Heilong jiang , Inner M ongolia , Sichuan;on slopes , forest g lades ,
forest fringes;alt.1000-2300 m .
22.R.interrupta(Nevski)Nevski
Nomenclature:R.interrupta (Nevski)Nevski , 1934 , Acta Univ .As.Med.Ser.8B , Bo t.Fasc.8B ,
17:68.-Agropy ron interruptum Nevski , 1932 , Izv.Bot.Sada.AN SSSR.30:632.-Semeiostachy s in-
terrupta (Nevski)Drob., 1941 , Fl.Uzbek.1:281.-E lymus praeruptus Tzvel., 1972 , Nov.Sist.
Vyssch.Rast.9:161.-Agropy ron macrolep is Drob., 1925 , Feddes Rep.21:41 , pro parte.
Type collection:Uzbeckstan:“Sammarkand dist rict and region , Zimarl on Ji jik-Ruta , meadow along a
rivulet , 12 VII 1913 , no.183 , B.Fedtschenko” .Holotype:LE !
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
338
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
densely tuf ted;(35-)60-95 cm tall;glabrous and pubescent on the nodes.Leaf sheaths g labrous.Leaf
blades fla t and subinvo lute;on upper surfaces densely pubescent;on low er surfaces glabrous and scabe ru-
lous;margins scabrous.Spikes erect and wi th spar se remo te spikele ts;(8-)15-17 cm long.Rachis in-
ternodes glabrous and spinulo se on tw o main ang les;10-20(-23)mm long.Spikelets dispo sitio n bilater-
al i.e.normal;g laucous g reen and slightly purple;with (3-)5-7 f lorets;w ith rachilla joints glabrous
and m inutely puberulent;rachil la joints length 3 mm long.Glumes broadly lanceo late;unequal;glabrous
and scabrous on the nerves , and wi th membranous margins;f irst glumes 10-13 mm long ;w ith 5-8
nerves;second g lumes 13-15 mm long ;with (5-)6-8 ne rves;tips acute and ending pointed , 1 -
too thed , and unequal-sided.Lemmas , at least the f irst 11-12 mm long;w ith back spar sely minute spinu-
lose and w ith callus w ith minute hai rs on tw o sides;lemma awned;lemma awn st raight , curved o r slight ly
curved , and bidentate at the base;lemma awn 20-25 mm long.Palea slightly shorter than lemma or equal
to lemma;apex rounded-subobtuse;11-12 mm long;keels ciliate on 1/3 of upper part;w ith glabrous
back.A nthe rs y ellow ;3-3.5(-4)mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 35] .
Distribution:Central Asia;on stony slopes , rocks , sw ales , pebbles.
23.R.jacquemontii (Hook.f.)Ovczinnikov et Sidorrnko
Nomenclature:R .jacquemonti i (Hook.f.)Ovczinnikov et Sido renko , 1957 , Fl.T adsch.SSR.1:295.
-Agrop yron jacquemont ii Hook.f., 1986 , Fl.Bri t Ind.7:369.-Anthosachne jacquemonti i (Hook.f.)
Nevski , 1934 , Tr.S redneaz.Univ., ser.8B , 17:65.-E lymus jacquemont ii (Hook.f.)T .A.Cope ,
1982 , in E.Nasir &S.I.Ali , Fl.Pakistan 143:622.
Type collection:China:Xizang:“Western Tibet;Bekar , Jacquemont;Nubr , al t.17 , 000 ft., Thom-
son;19 , 8 , 1848” .Lectotype:K !(selected by B.R.Lu 1993).
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
densely tuf ted;(12-)20-60 cm tall;g labrous.Leaf sheaths glabrous and hyaline silve ry .Leaf blades
scabrous;on upper surface s glabrous;on low er surfaces g labrous;margins g labrous.Spikes nodding or
slight ly nodding , erect , and wi th sparse remote spikelets;3-7 cm long.Rachis internodes glabrous;8-
15 mm long .Spikelets dispo sition bilateral i.e.no rmal;green and slight ly purple;with 4-7 flo re ts;w ith
rachilla joints glabrous;rachilla joints leng th 2-2.5 mm long .Glumes lanceola te;unequal;glabrous and
w ith membranous margins;f irst g lumes 3.5-5.5 mm long ;w ith 3(-5)nerves;second glumes 5-7 mm
long;w ith 3(-5)nerves;tips acuminate and ending in a point and acute and mucronate (with mucro 1-
3 mm).Lemmas , at least the fir st 7-9 mm long;w ith back g labrous , scabrous o r scaberulous , and w ith
cal lus g labrous;lemma awned;lemma awn curved or slightly curved and bidentate at the base;lemma awn
15-40 mm long .Palea equal to lemma;apex obtuse;7-9 mm long;keels ciliate on 1/2 of upper par t;
w ith glabrous back.Anthers yellow ;1.5-2 mm long .
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 36] .
Distribution:China , India , Pakistan:Kashmir;along st ream , on stony slope s , betw een ro cks and al-
luvial soi l;al t 3900-5700 m .
24.R.komarovi i (Nevski)Nevski
Nomenclature:R.komarovi i (Nevski)Nevski , 1934 , Fl.SSSR.2:615.-Agropy ron komarovi i
Nevski , 1932 , Izv.Bo t.Sada AN SSSR.30:620.-E lymus komarovi i (Nevski)Tzvel.1968 , Rast T sen-
t r.Azii 4:216.non E lymus komarovi i (Roshev.)Ohw i 1933.-E.uralensis subsp.komarovi i (Nevski)
Tzvel., 1973 , Nov.Sist.Vyssch.Rast.10:22.
339
　　　 四川农业大学学报 第 26 卷
Type collection:Russia:Sibiria:“Sayan mountains , valley of Kherok Rive r , 13 Aug.1902 , V.Komar-
ov” .Ho lotype:LE!
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;50 -75 cm tall;g labrous.Leaf sheaths glabrous.Leaf blades flat;on upper surfaces
sparsely villose and scabrous;on low er surface s glabrous and scabrous;margins g labrous.Spikes erect and
w ith dense spikele ts;8.5-15 cm long.Rachis internodes scabrous on tw o main ang les;3.5-5(-7)mm
long.Spikelets dispo sitio n slight ly secund;greenish purple and g reen;w ith 3-5 flo rets;with rachilla
joints densely pubescent;rachil la joints leng th 1-2 mm long.Glumes broadly lanceolate and assymmet-
rical;subequal;scabrous or scaberulous and wi th membranous margins;f irst glumes (6-)8 -10 mm
long;w ith 5-7 nerves;second g lumes(6-)8-10 mm long;w ith 5-7 nerves;t ips abruptly narrow ed
into a point , aw ned , 1-5(-7)mm long , 1-to othed , and unequal sided.Lemmas , at least the first 10-
12 mm long;w ith back pilo se and w ith callus wi th minute hairs and longe r hai rs on tw o sides;lemma aw n-
ed;lemma awn st raight;lemma awn 8-15 mm long .Palea slight ly sho rter than lemma;apex subobtuse
and ema rg inate;9-11 mm long ;keels ciliate on 1/3-1/2 of uppe r par t;w ith g labrous back.Anthers
yellow;2 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 37] .
Distribution:Russia , Hazakhstan , Mongolia , China;on stony slopes , steppes o f slopes;sw ales , peb-
bles , fo rest glades , among shrubs;alt.1820-2160 m .
25.R.longearistata(Boiss.)Drob
Nomenclature:R .longearistata (Boiss.) Drob., 1941 , Fl.Uzbek.1:280.-B rachypodium
longearistatum Boiss., 1846 , Diagn.Pl.O r., ser.1 , 7:127.-Agropy ron longearistatum (Boiss.)
Boiss., 1884 , Fl.Or.5:660.-Anthosachne longearistata (Boiss.)Nevski , 1934 , Acta Univ.A s.Med.
Ser.8B.17:64.-E lymus longearistatus(Boiss.)Tzvel., 1972 , Nov.Sist.Vyssch.Rast.9:62.
Type collection:Iran:Southe rn Persia:“In monte Totschal prop Teheran , 23 Vii 1843.Pl.Pers.Bor ,
no.569.Th.Kotschy” .Holo type:G-BOIS!Cotype:LE !BM!
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms densely
tufted;30-65 cm tall;glabrous.Leaf sheaths w ith sho rt ret ro rse puberulous.Leaf blades scabrous;on
upper surfaces densely shor ter ret ro rse pubescent;on low er surfaces glabrous and w ith sho rt ret rorse pu-
bescence;margins scabrous.Spikes nodding o r slight ly nodding and w ith sparse remo te spikelets;6-10
cm long .Rachis internodes scabrous on tw o main ang les;8-11(-15)mm long .Spikelets dispo sitio n bi-
lateral i.e.normal;green;w ith 7-12 f lorets;w ith rachilla joints minutely spinulose;rachilla joints leng th
3-4 mm long.Glumes linear-lanceolate;unequal;g labrous;fi rst g lumes(4-)6-9 mm long ;w ith 3
nerves;second g lumes(5-)9-12 mm long;w ith 5 nerves;tips acuminate and awned , 3 mm long .Lem-
mas , at least the fi rst 10-12(-14)mm long;w ith back glabrous and w ith callus glabrous;lemma aw n-
ed;lemma awn curved o r slightly curved;lemma awn(30-)40-80 mm long .Palea equal to lemma;apex
t runcate and obtuse;10-12(-14)mm long ;keels ciliate on 2/3 of uppe r part;g labrous on back betw een
keels.A nthers y ellow ;4-6.5(-7)mm long .
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 3 , 21] .
Distribution:Tadzhkistan , Uzbeckistan , Iran , China;on slopes;al t.2300-3800 m.
26.R.macrochaeta Nevski
Nomenclature:R.macrochaeta Nevski , 1934 , Acta Inst.Bo t.Acad.Sci.URSS , ser.I , 2.48.-Se-
meiostachys macrochaeta (Nevski)Drob., 1941 , Fl.Uzbek.1:281.-Agrop yron macrochaetum (Nevs-
340
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
ki)Bondar , 1968 , Opred.Rast.Sredneaz.Azii 1:170.-E lymus macrochaetus (Nevski)Tzvel., 1972 ,
Nov .Sist.Vyssch.Rast.9:61.
Type collection:Tadzhikistan:“Eastern Tadzhikistan , basin of Yakhsu River , upper reaches of Ob-
Daschtako River , on the ascent f rom village son Khazreti to , 27 IX 1932 , no .985 , N.Goncharo v et al.” .
Ho lotype:LE !
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
densely tuf ted and stout;80-135 cm tall;densely sho rt pubescent all ove r , pubescent below nodes , and
puberulent o r scabrous below the spikes.Leaf sheaths scabrous.Leaf blades flat and invo lute;on upper
surfaces w hi te vil los on nerves;on lowe r surfaces scabrous and g labrous;margins scabrous.Spikes erect ,
w ith sparse remote spikelets , and w ith appressed rachis;8.5-16(-20)cm long .Rachis internodes sca-
brous and minute ci liate on tw o main ang les;12-16 mm long.Spikelets dispo sitio n bilateral i.e.no rmal;
g reenish purple;w ith 3-6 flo re ts;w ith rachil la joints puberulent;rachil la joints leng th 1.5-2 mm long.
Glumes lanceola te , asymme trical , and coriaceous;subequal;scabrous or scaberulous and nerves and mar-
gins sparsely spinulous;f irst g lumes 12-19 mm long ;w ith 5-7 nerves;second glumes 12-20 mm long;
w ith 6-7 nerves;t ips acuminate and ending in a aw n point(up to s mm long).Lemmas , at least the f irst
13-16(-18)mm long;with back g labrous , appressed minutely pubescent , sparsely hir sute on upper part
and margins , and w ith callus wi th minute hairs and longer hai rs on tw o sides;lemma aw ned;lemma awn
st raight and subflexuous;lemma awn 20-30(-35)mm long .Palea sho rter than lemma and equal to lem-
ma;apex rounded-subobtuse and obtuse;(9-)11-12(-13.5)mm long;keels ci liate on 2/3 of upper
part;puberulent on back betw een keels.Anthers yellow;1.5-2 mm long .
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 35] .
Distribution:Tadzhikistan and nearby ;among shrubs , sparse forests , fo re st glades , pebbles , stony
slopes;al t.1800-2700 m.
27.R.nakai Kitag
Nomenclature:R.nakai Kitag ., 1941 , Rep.Inst.Sci.Res.Manch.5(5):151.-E lymus nakai
(Kitag.)A.Love , 1984 , Feddes Rep.95:454.
Type collection:China:Jining:“Prov.Kan-nan:inter Jimmujyo et Muto-ho monte Chang-bei-shan , T .
Nakai , Aug.8 1914” .Holotype:TI !
Description:Perennial wi th sho rt rhizomes and w ith fibrous roo ts.Culms lo osely tuf ted;100-110 cm
tall;puberulent on the nodes.Leaf sheaths glabrous and w ith ret ror se hairs on the basal ones.Leaf blades
f lat;on upper surfaces sparsely pubescent;on low er surfaces g labrous;margins g labrous.Spikes erect and
w ith dense spikelets;12-13 cm long .Rachis internodes scabrous on tw o main angles;7-11(-17)mm
long.Spikelets disposit ion slight ly secund;g reen;with 5 f lorets;with rachil la joints densely hi rsute;ra-
chilla joints leng th 1.5-2 mm long .Glumes lanceo late;unequal;scabrous on the ne rve s;fi rst glumes 9-
10 mm long ;with 3-5 nerves;second glumes 9.5-11.5 mm long;with 5-7 nerves;tips acuminate and
ending in a point.Lemmas , at least the fi rst 10 mm long;with back glabrous , minutely hirsute on the
nerves , near margins , and hirsute on the sides at the base , and wi th callus w ith minute hairs;lemma aw n-
ed;lemma awn curved or slight ly curved;lemma awn 18-22 mm long.Palea equal to lemma;apex round-
ed-subobtuse and emarginate;10 mm long;keels ciliate on 1/3-1/2 of upper par t;puberulent on back be-
tween keels.A nthe rs y el low ;1.5 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 24] .
Distribution:China:Jining , Inner M ongo lia , Ningxia , Sichuan;on grassy slopes , g rassland of ra-
vines , meadow s;alt.1500-2200 m.
341
　　　 四川农业大学学报 第 26 卷
28.R.nutans(Keng)Keng
Nomenclature:R.nutans(Keng)Keng , 1957 , Clav.Gen.&Sp.Gram.Sin.73 , 185;1959 , Fl.Ill.Pl.
Prim.in.G ram :376.-Agropy ron nutans Keng , 1941 , Sunyatsen 6(1):63.-Elymus pseudonutans A.
Love , 1984 , Feddes Rep.95:467.
Type collection:China:Gansu:Xiahe:“ on slope of g rassy steppes shenkufumudi , Labrang , October
7 , 1934 , C.W.Yao no 502” .Holo type:PE!
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms densely
tufted;25-60 cm tall;g labrous.Leaf sheaths g labrous.Leaf blades involute;on upper surfaces glabrous
and sparsely pubescent;on lower surfaces glabrous;margins glabrous.Spikes nodding and w ith sparse re-
mo te spikelets;4-6.5 cm long .Rachis internodes glabrous;5-11(-18)mm long .Spikelets dispo sitio n
bilateral i.e.no rmal;st raw yellow and g reenish purple;w ith 3-4 flo rets;w ith rachil la joints puberulent;
rachilla joints length 2-3 mm long.G lumes lanceolate;unequal;glabrous and scaberulous on nerves;
fi rst glumes 2-3 mm long;w ith 3 ne rve s;second glumes 3-7 mm long ;with 3 nerves;tips acuminate or
acute.Lemmas , at least the fi rst 8-10 mm long ;w ith back appressed minutely pubescent and w ith callus
w ith minute hairs and longe r hairs on tw o sides;lemma awned;lemma awn curved o r slight ly curv ed;lem-
ma awn 4-18(-28)mm long .Palea equal to lemma o r slight ly sho rter than lemma;apex obtuse;keels
ci liate on 1/2 of uppe r pa rt;pubescent on back betw een keels.Anthers black;1-1.5 mm long .
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 36 , 38] .
Distribution:China:Gansu , Qinghai , Sichuan , Yunnan , Xizang , Xinjiang ;on g rassland , slopes
meadow , riverside f looded meadow ;alt.2700-5500 m.
29.R.panormitana(Parl.)Nevski
Nomenclature:R.panormitana(Parl.)Nevski , 1934 , Fl.SSSR 2:612.-Agropy ron panormitanum
Parl., 1840 , Pl.Rar.Sic.2:20.-Trit icum panormitanum (Parl.)Ber tol., 1841 , Fl.I tal.4:780.-
Semeiostachys panorm itana(Parl)Drob., 1941 , Fl.Uzbek.1:284.-E lymus panorm itanus(Parl.)Tz-
vel., 1970 , Spisok.Rast.Herb.Fl.SSSR 18:27.
Type collection:Italy:Sicily (near Palermo).Lecto type:FI !
Description:Perennial wi th short rhizomes and wi thout fibrous roo ts.Culms loosely tuf ted;65-150
cm tall;g labrous.Leaf sheaths g labrous.Leaf blades f lat and involute;on upper surfaces scabrous and
sparsely w hi te villo se;on low er surfaces glabrous;margins scabrous.Spikes erect , nodding or slight ly
nodding , and wi th spa rse remo te spikele ts;10-20 cm long.Rachis inte rnodes scabrous on tw o main an-
gles o r hispid on tw o main angles.Spikelets dispo sitio n bilateral i.e.normal;green;with 3-5 f lorets;
w ith rachilla joints densely hirsute;rachilla joints leng th 1.5-2 mm long.G lumes linear-lanceolate;sube-
qual;scabrous , and w ith membranous margins;first g lumes (12-)15-20 mm long;w ith 5-7 nerves;
second g lumes(12-)15-20 mm long;with 7-9 nerves;tips acuminate and awned , 1-5 mm.Lemmas ,
at least the fi rst (9-)12-16 mm long;with back g labrous and sparsely scabrous nea r the tip;lemma
awned;lemma awn st raight;lemma awn(15-)20-32(-35)mm long .Palea sho rter than lemma;apex
subobtuse and emarginate;11-15 mm long;keels ci liate on 1/3 of upper part;with glabrous back.A n-
ther s yellow;4-5 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 39] .
Distribution:Italy , S.Spain , Balkan Peninsula , Romania , Russia , Turkey , Lebanon , Cyprus , N.I-
ran , N.Iraq;mountain w oods , shaley abandoned field on hills and forest;alt.550-1625 m.
30.R.pendulina Nevski
342
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
Nomenclature:R.pendulina Nevski , 1934 , Acta Inst.Bo t.A cad.Sci.URSS , ser.I , 2.50.-Trit icum
caninum var.amurense Korsh , 1892 , Tr.Petrb.Bot.Sada 12:414.-Agropy ron pendulinum (Nevski)
Vorosch , 1963 , Bull.Glavn.Bo t.Sada AN SSSR 49:55.-Elymus pendulinus (Nevski)Tzvel., 1968 ,
Rast.T sentr.Azii 218.
Type collection:Russia:“Amur valley , village Seyuznoe , in fo rest on mountain slope , 18 VI 1891 , S.
Korzhinskii” .Holo type:LE !
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms loo sely
tufted;60-110 cm tall;glabrous.Leaf sheaths glabrous and w i th re tro rse hairs on the basal ones.Leaf
blades flat;on upper surfaces sparsely villose and scabrous;on low er surfaces glabrous and scabrous;mar-
gins glabrous.Spikes nodding o r slightly nodding;15-23 cm long .Rachis internodes scabrous on tw o
main angles;10-14 mm long (the low est up to 25-32 mm).Spikelets disposi tion bilateral i.e.no rmal;
g reen;w ith 4-8 f lorets;w ith rachilla joints densely pubescent;rachilla joints length 1 mm long .Glumes
oblong-lanceolate and lanceolate;unequal;scabrous o r scabe rulous;f irst g lumes 6-8 mm long;w ith 5-
7 nerves;second glumes 8-10 mm long;w ith 5-7 nerves;tips acute , acuminate , and acuminate and end-
ing in a point.Lemmas , at least the fi rst 8-10 mm long ;w ith back scabrous on the uppe r part , lo ng cili-
ate along margins , and wi th callus w ith minute hairs and longe r hairs on tw o sides;lemma awned;lemma
awn st raight;lemma awn 15-28 mm long.Palea equal to lemma;apex rounded-subobtuse;8-10 mm
long;keels ciliate on 1/2 of upper part;pubescent on back between keels.Anthers yellow;2 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 40 , 41] .
Distribution:Russia , China;in forest glades , on meadow s and slope g rassland , pebbles , among
shrubs;alt.960-2900 m.
30a.var.multiculmis(Kitag.)J.L.Yang , B.R.Baum et Yen
Nomenclature:var.multiculmis(Kitag.)J.L.Yang , Baum et Yen comb.nov.-Roegneria multicul-
mis Kitag ., 1941 , J.Jap.Bot.17(4):235-236.-Agropy ron mul ticulmis Kitag., 1941 , J.Ap.Bot.17
(4):235.Roegneria mult iculm is var.pubi f lora Keng , 1953 , in Keng &S.L.Chen , A cta Nanking Univ.
(Biol.)3(1):29.-Elymus pendulinus subsp.multiculmis(Kitag.)A.Love , 1984 , Feddes Rep.95:459.
Type collection:China:Jinin:“ in herbidis siccis ci rca Hsin-Ching(M .Kitagaw a Jul.20 , 1938” .Hol-
otype:TI !
Description:It di ffers from var.pendul ina by its culms pube scent on the nodes;rachis internods his-
pid-ci liate on tw o main ang les;spikelets w ith 6-9 flo rets;lemma back wi th sparsely pubescent on upper
part or on whole back;palea keels ciliate on 1/2 o f upper par t;and anthers 3 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 42] .
Distribution:China:Jining , Shaax i , Inner Mongolia , Qinghai , Gansu;on dry slopes , fo rest g lades ,
ro adside of ravines;al t.450-2459 m .
31.R.retrof lexa(B.R.Lu &Salomon)L.B.Cai
Nomenclature:R.retrof le xa (B.R.Lu et B.Salomon)L .B.Cai , 1997 , Acta Phy totax.Sin , 35 (2):
152.-E lymus retrof lexuous B.R.Lu et B.Salomon , 1993 , Nord.J.Bo t.13(4):354.
Type collection:China:Xizang:“ 94 km W of Gongbogyamda , J.L.Yang et al.880756” .Holo type:
LD! Isotype:SAUTI !
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
ed;55-75 cm tall;g labrous and sparsely scabrous below spikes.Leaf sheaths g labrous and spa rsely sca-
brous or scaberulous.Leaf blades involute or subinvo lute;on upper surfaces scabrous;on low er surfaces
343
　　　 四川农业大学学报 第 26 卷
scabrous;margins glabrous.Spikes nodding and wi th sparse remo te spikelets;6.5-12 cm long;5-10
mm w ide.Rachis internodes g labrous;7-12 mm long .Spikele ts disposi tion bila teral i.e.no rmal and w ith
very sho rt peduncles(0.3-0.5 mm long);g reen;w ith 3-5(-6)f lorets;w ith rachilla joints pilo se;ra-
chilla joints leng th 2.5-3 mm long .G lumes linear-lanceolate;unequal;glabrous , scabrous on the nerves ,
and w ith membranous margins;fi rst glumes(1.5-)2-5 mm long ;w ith(2-)3 nerves;second g lumes(3
-)5-7.5 mm long;w ith 3-5 nerves;t ips acute and mucronate.Lemmas , at least the fi rst 9-12 mm
long;with back scabrous or scabe rulous , appressed minutely pubescent , and wi th callus w ith minute
hai rs;lemma awned;lemma awn curved o r slightly curved;lemma awn 35-55 mm long.Palea slight ly
sho rte r than lemma and equal to lemma;apex rounded-subobtuse and obtuse;8-9 mm long;keels ciliate
on whole leng th;scabrous on whole back betw een keels and pubescent on back betw een keels.Anthers
yellow;2.5-3 mm long .
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 25] .
Distribution:China:Xizang:in Betula fo rests , dry bushes meadow s , mountain slopes and roadsides;
alt.3900-4300 m .
32.R.schugnanica(Nevski)Nevski
Nomenclature:R.schugnanica (Nevski)Nevski , 1934 , Acta Univ .A s.Med.Ser.8b.17:68.-
Agropy ron schugnanicum Nevski , 1932 , Izv.Bo t.Sada AN SSSR 30:512.-E lymusschugnanicus(Nevs-
ki)Tzvel., 1972 , Nov.Sist.Vyssch.Rast.9:62.
Type collection:Tadzhikistan:“Jilandy-Duzak-Dara , 14 VII 1913 , no.41 , N.Tuturin” .Holotype:LE!
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms densely
tufted;(20-)30-60 cm tall;g labrous and sparsely scabrous below spikes.Leaf shea ths g labrous.Leaf
blades invo lute;on upper surfaces scabrous and densely pubescent;on low er surfaces scabrous and densely
pubescent;margins scabrous.Spikes nodding and w ith spa rse remo te spikelets;5-12 cm long ;5-8 mm
w ide.Rachis internodes scabrous , minute puberulous , and scabrous on tw o main ang les;5-13 mm long.
Spikelets dispo sitio n bilateral i.e.no rmal and wi th very sho rt peduncles(0.4 mm long);purple-tinged and
g reenish purple;w ith 4 -7 f lorets;w ith rachilla joints minutely pubescent and pilo se;rachilla joints
length 1-2 mm long .Glumes ellipt ic-lanceo late;unequal;glabrous , scabrous or scabe rulous , scabrous on
the nerves , and w ith membranous margins;f irst g lumes 1.8 -4 mm long;with 3-4 nerves;second
g lumes 2-6 mm long;w ith 3-5 ne rve s;t ips acute and mucronate , acuminate , and awned , 1-5 mm.
Lemmas , at least the fi rst 7.5-10 mm long;with back scabrous , appressed minutely pubescent , and w ith
cal lus w ith minute hai rs on tw o sides;lemma awned;lemma awn curved o r slightly curved;lemma awn
2.5-3 mm long.Palea sho rte r than lemma;apex obtuse and emarginate;6.5-8.5 mm long ;keels ciliate
on 1/3-1/2 of upper part;puberulent betw een keels at top.Anthers yellow ;1.5-2.2 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 43] .
Distribution:Tadzhikistan , Pakistan , Iran , Wester Himalaya , Pamir Karako rum ;alpine meadow s ,
on dryish soi l;alt.3000-3780 m.
33.R.semicostata(Nees ex Steud.)Kitag
Nomenclature:R .semicostata(Nees ex Steud.)Kitag ., 1939 , Rep.Inst.Manch.3 App.1:91.-
Trit icum semicostatum Nees ex S teud., 1854 , Syn.Pl.Glum.1:346.-Agrop yron sem icostatum Nees ex
Steud., 1854 , Syn.Pl.Glum .1:346.-Agropy ron japonicum Tacy , 1892 , Ann.Rep.U.S.Dept.Agr.
Div.Agro st.1891 , non Vasey ex Wickson , Rep.Calif.Exp.S ta.1895-1897:275.-Agropy ron semico-
statum (Nees )Candargy , 1901 , Monog r.tes phy ls ton Kri thodon 41.-E lymus sem icostatus (Nees ex
344
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
Steud.)A.Love , 1984 , Feddes Rep.95:453.
Type collection:“Nepal , forests , alt.1400-2900 m , Royel 150 , 178” .Holo type:K !
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;45-135 cm tall;g labrous and scaberulous at the low er par t.Leaf shea ths g labrous.Leaf
blades f lat;on upper surfaces g labrous and scabrous;on lower surfaces g labrous;margins scabrous.
Spikes e rect , curved or slight ly curved , and nodding or slight ly nodding;8 -30 cm long.Rachis inter-
nodes scabrous on tw o main angles.Spikelets disposi tion bilateral i.e.no rmal;g reen;with 6-8 f lorets.
Glumes lanceola te;unequal;scabrous or scaberulous and w i th membranous margins;fi rst g lumes 10 -
12.5(-16.5)mm long ;w ith 5-7 nerves;second g lumes 11-14(-18)mm long;with 7-9 nerves;tips
acute o r acuminate.Lemmas , at least the fi rst 12-14 mm long;w ith back scabrous or scaberulous and ap-
pre ssed minutely pubescent;lemma awned;lemma awn straight;lemma awn (4-)12-14(-18)mm
long .Palea shorter than lemma;apex obtuse and rounded-subobtuse;9-10.5 mm long.Anthers yellow ;
3-4 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 28] .
Distribution:Nepal , Pakistan , Afghanistan , Sikkim;on stony slopes , fo rest glade;alt.1400-3000 m.
34.R.shandongensis(B.Salomon)J.L.Yang , Y.H.Zhou et Yen
Nomenclature:R .shandongensis(B.Salomon)J.L .Yang , Y.H.Zhou et Yen , 1997 , Guihaia 17(1):
19-22.-E lymus shandongensis B.Salomon , 1990 , Willdenowia 19(2):449.
Type collection:China:“Shandong:Qindao , Aug .3 , 1950 , P.C.Keng 6507” .Holo type:NAS!
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;60-90 cm tall;g labrous.Leaf sheaths glabrous and covered w ith short hair s on low er part
and g labrous on upper par t.Leaf blades flat and subinvolute;on upper surfaces scabrous;on low er sur-
faces scabrous and g labrous;marg ins scabrous.Spikes nodding or slight ly nodding and w ith sparse remote
spikelets;(8-)10-16(-20)cm long;4-5 mm w ide.Rachis internodes glabrous;5-6(-10)mm
long (the low est up to 15-20 mm long.Spikele ts dispo sitio n bilateral i.e.no rmal;g reen;w ith 5-8 f lo-
rets;w ith rachilla joints puberulent;rachil la joints leng th 1-2 mm long.Glumes oblong-lanceolate;une-
qual;scabrous on the nerves;first g lumes 5-6.5(-7)mm long ;w ith (3-)5 nerves;second glumes
6.5-7(-9)mm long;with 5-7 nerves;tips acuminate and ending in a point.Lemmas , at least the f irst
8-9(-11)mm long;with back glabrous , with narrow membranous margins , w ith callus only w ith mi-
nute hai rs on ventral side , and wi th callus wi th minute hair s on tw o sides;lemma awned;lemma awn
st raight;lemma awn 11-21 mm long.Palea shorter than lemma;apex obtuse;7-8.5 mm long;keels
ci liate on 1/3 of uppe r pa rt;w ith glabrous back.Anthers yellow ;1.5 mm long .
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 36] .
Distribution:Eastern China , Hubei , and Gansu;ro adsides;al t.400-1200 m.
35.R.stricta Keng
Nomenclature:R.stricta Keng , 1963 , in Keng and S.L.Chen , Acta Nanking U niv.(Bio l.)3 (1):
68;1959 , Fl.Ill.Pl.Prim.Sin.Gram :396(in Chinese).-Roegneria stricta f.major Keng , 1963 , in Keng
and S.L.Chen , Acta N anking U niv.(Biol.)3(1):70;1959 , Fl.Ill.Pl.Prim.Sin.G ram :396 (in Chi-
nese).-E lymus strictus(Keng)A.Love , 1984 , Feddes Rep.95:458.
Type collection:China:Gansu:“Lung-te , ad latus viae crescens , alt.2200 m , 9 VII 1942 , T .P.Wang
13032” .Ho lotype:N!
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms loo sely
345
　　　 四川农业大学学报 第 26 卷
tufted;50-100 cm tall;g labrous.Leaf sheaths glabrous.Leaf blades involute;on upper surfaces sparsely
pi lose;on low er surfaces glabrous;margins g labrous.Spikes erect;14-26 cm long.Rachis internodes
scabrous or m inute ciliate on tw o main ang les;6-11 mm long (the lowe st up to 20 mm).Spikele ts dispo-
sit ion bi lateral i.e.normal;g reen;with 5-8(-14)f lo rets;w ith rachilla joints minutely puberulent;ra-
chilla joints length 1-1.5 mm long.Glumes oblong-lanceolate;unequal;scabrous on the nerves;f irst
g lumes 7-9(-12)mm long ;w ith 5-7 nerves;second g lumes 8-10(-13)mm long;with 5-7 nerves;
t ips acuminate , acuminate and ending in a point , and awned , 1-5 mm long.Lemmas , at least the fir st 9
-11 mm long;w ith back glabrous , scaberulous on upper part , puberulous on both side s at the base , and
w ith callus wi th minute hair s;lemma aw ned;lemma awn st raight o r slight ly divaricate;lemma awn (10
-)14-22(-28)mm long.Palea equal to lemma;apex t runcate and emarginate;9-11 mm long;keels
ci liate on 1/3 of upper part;uppe r part of back appressed puberulous betw een keels.Anthers yellow;2
mm long .
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 39] .
Distribution:China:Gansu , Sichuan , Qinghai , Xizang , Shaanxi , Shanxi , Inner M ogolia;roadsides ,
slopes , alluvial o f ravines;alt.1380-2600 m .
36.R.tenuispica J.L.Yang &Y.H.Zhou
Nomenclature:R.tenuispica J.L.Yang et Y.H.Zhou , 1994 , Novon 4 (3):307.-Elymus tenuispi-
cus (J.L .Yang et Y.H.Zhou)S.L .Chen , 1997 , Novon 7(3):229.
Type collection:China:Xizang:“Eluo , Changdu to Ruiw uqi highw ay 22 km , alt.3580 m , 25 Sept.
1989 , J.L.Yang &B.R.Lu 890955” .Holo type:SAUTI !
Description:Perennial wi th short rhizomes and w ithout fibrous roo ts.Culms lo osely tuf ted;35-75
cm tall;glabrous and puberulent on the nodes.Leaf sheaths densely vil lose.Leaf blades f lat or inv olute;
on upper surfaces densely villo se;on lower surfaces scabrous;margins glabrous.Spikes erect , or slight ly
nodding , and wi th sparse remo te spikelets;9.2-10.5 cm long.Rachis internodes densely pubescent on
nodes and hispid-ciliate on tw o main angles;8-12 mm long (the low est up to 15 mm).Spikelets disposi-
tion bila teral i.e.normal;g reen;w ith 4-7 flo re ts;w ith rachilla joints densely puberulent;rachilla joints
length 1-1.5 mm long .Glumes oblong-lanceolate;unequal;hirsute and wi th membranous margins;f irst
g lumes 5-6.5 mm long;w ith 3-4 nerves;second g lumes 6.5-7.5 mm long ;with 4-5 nerves;tips acu-
minate and ending in a point (0.5-1 mm long).Lemmas , at least the first 7.5-8 mm long;with back
scabrous on the upper pa rt , long ciliate along margins on uppe r part , densely pubescent on the low er par t ,
and w ith cal lus wi th minute hairs and longer hairs on tw o sides;lemma awned;lemma awn st raight or
slight ly curved;lemma awn 10-20 mm long .Palea shor ter than lemma and slightly sho rter than lemma;
apex rounded-subobtuse and emarginate;7-7.5 mm long;keels ciliate on 3/4 of uppe r part;pubescent on
back betw een keels.Anthers yellow ;2-2.5 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 44] .
Distribution:China:Xizang;among shrubs;al t.3500-3700 m.
37.R.t ibetica (Meld.)J.L.Yang , Yen &B.R.Baum
Nomenclature:R .t ibet ica (Meld.)H .L.Yang , 1980 , in F l.Reip.Popul.Sin.9 (3):72.-Agrop y-
ron t ibet icum Meld., 1960 , in Bo r , Grass.Burm.Cey l.Ind.&Pakist.696.-E lymus t ibet icus(Meld.)G.
Singh , 1983 , Taxon 32:640.
Type collection:China:Xizang:“S.E.Tibe t:Kongbo Province , Timpa , Tsangpo Valley , 9700 f t.6 ?
7 , 1938 , F.Ludlow , G.Sharrif and G.Tay lor 5160” .Holo type:BM!
346
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
ed;70-100 cm tall;pubescent on the nodes.Leaf sheaths glabrous in the upper ones and densely sho rt
se tulous in the low er ones.Leaf blades f lat;on upper surfaces sparsely villo se on nerves;on low er sur-
faces g labrous;margins scabrous.Spikes slight ly curved o r slightly nodding ;10-16 cm long.Rachis in-
ternodes scabrous on tw o main angles.Spikelets disposit ion bi lateral i.e.normal;g reen;w ith(3-)4-5
f lorets;with rachi lla joints minutely pubescent.Glumes oblong-lanceo late;unequal;scabrous on the
nerves;first g lumes 7-8.5 mm long ;w ith 5-7 nerves;second g lumes 8.5-10 mm long;w ith 5 -7
nerves;tips acuminate and awned , aw n 3-7 mm long , and w ithmembranous ma rg ins.Lemmas , at least
the fi rst 8-10 mm long;w ith back glabrous o r scabrous on the upper par t;lemma awned;lemma awn
st raight o r slight ly curved;lemma awn 10-17 mm long.Palea slightly shorter than lemma;apex obtuse
and truncate;keels ciliate on uppe r part;se tulous on upper par t of back betw een keels.Anthers yel low ;2
-2.3 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY [ 31 , 45] .
Distribution:China:Xizang;on slopes;al t.2960 m.
38.R.t schimganica(Drob.)Nevski
Nomenclature:R.t schimganica(Drob.)Nevski , 1934 , Acta Univ.As.Med.Ser.8B , 17:64 , 68.-
Agropy ron tschimganicum Drob , 1924 , Feddes Rep.21:40.(=A.czimganicum Drob.).-E lymus
tschimganicus(Drob.)Tzvel., 1968 , Rast.Tsentr.Azii.4:221.-Roegneria hissarica M .Pop.ex Zak.,
1958 , T r.Uzb.Univ.New ser.89:19.nom .nud.-Elymus tschimganicus(Drob.)var.g labrisculus D.
F .Cui , Bull.Bot.Res.10(3):30.-Roegneria tschimganica (Drob.)Nevski var.glabriscula(D.F.Cui)
L.B.Cai , 1995 , Bull.Bot.Res.16(1):50;-Roegneria glabriscula (D.F.Cui)L.B.Cai , 1997 , Acta
Phy to tax .Sin.35(2):167.
Type collection:Tadzhikistan:Tashkent:“Prov .Syr-darja , Distr.Tashkent.In montibus ci rca urban
Tashkent , Popov , 1921 , no.1266 et 1270”.Ho lotype:TAK !
Description:Perennial wi th short rhizomes and w ithout f ibrous roo ts.Culms densely tuf ted;20-60
cm tall;glabrous.Leaf sheaths g labrous.Leaf blades subinvolute;on uppe r surfaces g labrous or pubes-
cent;on low er surfaces g labrous;marg ins scabrous.Spikes f lexuous and nodding , and w ith sparse remote
spikelets;6-10 cm long.Rachis internodes scabrous on tw o main ang les;10-12 mm long .Spikelets dis-
posit ion bi lateral i.e.normal;g laucous green and purple-tinged;w ith (3-)5-7 flo rets;w ith rachilla
joints minutely pubescent;rachilla joints leng th 2-2.5 mm long.Glumes linear-lanceo late;subequal;sca-
brous on the nerves;fi rst g lumes 4-9(-10)mm long;with 3 nerves;second g lumes 4-9(-10)mm
long ;with 3-5 nerves;tips acuminate and ending in a point o r acute and mucronate , rarely aw ned , aw n 1
-4 mm long.Lemmas , at least the fi rst 9-10 mm long;w ith back scabrous or scaberulous , glabrous ,
w ith callus wi th minute hair s on tw o sides , and wi th callus glabrous(very rarely);lemma awned;lemma
awn slight ly curv ed;lemma awn 20-30 mm long.Palea slightly shor ter than lemma;apex obtuse , subob-
tuse , and emarginate;8.5-9.5 mm long;keels ciliate on whole leng th;with g labrous back.Anthers
yellow;2-2.5 mm long .
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 30] .
Distribution:Central A sia , China;on high mountain meadow s , stony slopes , scree , rocks , sw alesand
pebbles.
39.R.ugamica(Drob.)Nevski
Nomenclature:R.ugamica(Drob.)Nevski , 1934 , Acta Univ.As.Med.Ser.8B , 17:70.non E lymus
347
　　　 四川农业大学学报 第 26 卷
ugam icus Drob.1925.Agropy ron ugamicum Drob., 1923 , Vved.Opred.Rast.Okr.Taschk.1:41.-Se-
meiostachys ugamica (Drob.)Drob., 1941 ,Fl.Uzbek.1:284.-E lymus nev ski i Tzvel., 1970 , Spisok.
Rast.Herb.Fl.SSSR 18:29.-Elymus dentatus subsp.ugamicus (Drob.)Tzvel., 1973 , Nov.Sist.
Vyssch.Rast.10:2.-Elymus gmelini i subsp.ugam icus(Drob.)A.Love , 1984 , Feddes Rep.95:456.
Type collection:Tadzhikistan:“A d fl.Ugam , distr.Tashkent , 1921 , no.1313 , Uranov” .Lecto type:
TAK!(Tzvelev , 1973).
Description:Perennial w i th sho rt rhizomes and w ithout fibrous roo ts.Culms tuf ted;50-120 cm tall;
g labrous.Leaf sheaths glabrous in the upper one s and pilo se in the low er ones.Leaf blade s f lat;on upper
surfaces sparsely pilo se and scabrous;on lowe r surfaces glabrous and scabrous;marg ins g labrous.Spikes
erect and w ith dense spikele ts;(7-)15-20 cm long.Rachis internodes scabrous on tw o main angles;5-
6 mm long (the low est one up to 8 mm).Spikelets dispo sitio n secund;g reen and purple-tinged;w ith (3
-)5-9 f lo rets;w ith rachi lla joints minutely pubescent;rachilla joints length 3-3.5 mm long.Glumes
broadly lanceo late and asymmetrical;unequal;scabrous on the nerves and w ith membranous margins;f irst
g lumes 8-10 mm long ;w ith 5-7(9-11)nerves;second glumes 10-15 mm long;w ith 5-7 nerves(9-
11);tips acuminate , acute and mucronate , and 1-toothed.Lemmas , at least the fi rst 10-15(-16)mm
long;w ith back hirsute , scabrous , and w ith narrow membranous ma rg ins;lemma awned;lemma awn
st raight and bidentate at the base;lemma awn 0.5-5(-7)mm long.Palea sho rter than lemma and sube-
qual to lemma;apex rounded-obtuse and emarg inate;10-12 mm long ;keels ciliate on who le leng th;pu-
bescent on back betw een keels.Anthers yellow ;2.5-3 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 35] .
Distribution:Tadzhikistan , Haxahkstan , Russia , China;on stony slope s , sw ales , pebbles , forest
g lades , and among shrubs.
40.R.valida(Meld.)J.L.Yang , B.R.Baum et Yen
Nomenclature:R.val ida (Meld.)J.L.Yang , Baum et Yen comb.et stat.nov.-Agropy ron striatum
var.validum Meld., in Bo r.Grass.Burm.Ceyl.Ind.& Pakist.696.-E lymus validus (Meld.)B.
Salomon , 1994 , Nord.J.Bo t.14(1):12.
Type collection:“Kashimir:Srinuggur , 7800 f t , 16/7 1876 , C.B.Clarke 29116A” .Holo type:K !
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;120-140 cm tall;glabrous and scaberulous at the lowe r part.Leaf sheaths g labrous.Leaf
blades f lat;on upper surfaces scabrous;on low er surfaces g labrous;margins g labrous and scabrous.
Spikes erect , curved o r slightly curved , and w ith dense spikelets.Rachis internodes scabrous on tw o main
angles and minute ciliate on tw o main ang les.Spikelets disposit ion bilateral i.e.normal;green;with 6-8
f lorets.Glumes oblong-lanceolate and broadly oblong-lanceo late;unequal;scabrous on the nerves and
densely pubescent(along margins);f irst glumes 10-13.5 mm long;w ith 5-7 ne rve s;second glumes 11
-14 mm long;w ith 7-9 nerves;tips acute and slightly blunt.Lemmas , at least the fi rst 12-14 mm
long ;w ith back glabrous and w ith long hai rs on the margins and in upper part;lemma awned;lemma awn
st raight;lemma aw n 12-15 mm long .Palea shorter than lemma(as 3/4 long as lemma);apex obtuse and
rounded-subobtuse;9-10.5 mm long;w ith glabrous back.Anthers yellow ;3-4 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 35] .
Distribution:Northeastern India , Pakistan;on stony slopes;alt.2300-2500 m.
41.R.varia Keng
Nomenclature:R.varia Keng , 1963 , in Keng et S.L.Chen , Acta Nanking Univ.(Biol.)3(1):39;
348
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
1959 , Fl.Ill.Pl.Prim.Sin.Gram:397(in Chinese).-Elymus varius (Keng)Tzvel., 1968 , Rast T sen-
t r.Azii 4:219(nom.invalid.).
Type collection:China:Kansu:“ Lingsia , Wan-Shou-Kwan , Y.L.Keng &P .C.Keng 5890” .Holo-
type:N!
Description:Perennial wi th short rhizomes and w ithout fibrous roo ts.Culms lo osely tuf ted;17-40
(-60)cm tall;g labrous.Leaf sheaths glabrous.Leaf blades involute and f lat;on upper surfaces gla-
brous;on low er surfaces g labrous;margins g labrous.Spikes erect and wi th sparse remote spikele ts;3.5
-10 cm long.Rachis internodes scabrous on tw o main ang les;6-10 mm long (the low est one up to 12
mm).Spikelets dispo sitio n bilate ral i.e.no rmal;green and purple-tinged;w ith 3-5 f lorets;with rachilla
joints minutely pubescent;rachilla joints leng th 2-2.5 mm long.Glumes oblong-lanceolate and asymmet-
rical;unequal;scabrous on the nerves;fi rst g lumes 4.5-8 mm long ;w ith 3-5 nerves;second g lumes 6
-10 mm long;w ith 3-5 nerves;t ips acute or acute and mucronate.Lemmas , at least the f irst 7-8.5
mm long ;w ith back g labrous , appressed pube rulous on margins and low er par t , w ith callus w ith minute
hai rs on tw o sides , and on ventral side;lemma awned;lemma awn divaricate or slightly div aricate and
st raight;lemma awn 7-17 mm long .Palea equal to lemma;apex emarginate;7-8.5 mm long;keels cili-
ate on 1/2 of upper part;pubescent on back betw een keels.Anthers y ellow ;1-2 mm long .
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 4] .
Distribution:China:Gansu , Xizang;on slopes , riversids of ravine;alt.2800-3200 m.
42.R.yangiae(B.R.Lu)L.B.Cai
Nomenclature:R.yangiae(B.R.Lu)L.B.Cai , Acta Phy to tax .Sin.35(2):158.-Elymus yang ii B.
R.Lu , 1992 , Willdenowia , 22:129-132.
Type collection:China:Xizang:“Ape bridge , 13 km E.Gongbogyamda , among bushes or on stony
mountain slopes , al t.3000-4200 m , 20 Sept.1988 , J.L.Yang et al.H-8341” .Holo type:LD!Isotype
K !PE! SAUTI !
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
densely tuf ted;60-100(-110)cm tall;glabrous.Leaf sheaths scabrous and pilo se on the low er ones.
Leaf blades f lat;on upper surfaces scabrous;on low er surfaces scabrous;margins ciliate.Spikes nodding
and w ith sparse remote spikelets;10-15 cm long ;5-8 mm w ide.Rachis internodes scabrous on tw o
main angles;11-18 mm long.Spikelets dispo sitio n bilateral i.e.no rmal;g reen;w ith 5-10 flo re ts;w ith
rachilla joints pilo se and minutely pubescent;rachilla joints leng th 1.7-2.1 mm long.G lumes lanceo late;
unequal;scabrous on the nerves and w ith membranous margins;f irst glumes 2-4.5 mm long;with 1-3
nerves;second g lumes 3-5.5 mm long;w ith 2-3(-5)ne rve s;t ips acute o r mucronate.Lemmas , at
least the first 7-10 mm long;with back sparsely pubescent to densely pi lose , hairs up to 0.7 mm long and
w ith callus wi th minute hai rs and longer hai rs on tw o sides;lemma awned;lemma awn straight;lemma
awn 18-32 mm long.Palea slight ly longe r than lemma and equal to lemma;apex emarginate and biden-
tate;8-10 mm long;keels ciliate on whole leng th;puberulent on back betw een keels.Anther s yellow ;
3.5-4.2 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY varius[ 1] .
Distribution:China:Xizang;among shrubs o r on stony slopes;alt.3000-4200 m.
43.R.yezoensis(Honda)Ohwi
Nomenclature:R.yezoensis(Honda)Ohw i , 1941 , Acta Phy to tax .&Geobo t.10:98.-Agropyron
yezoense Honda , 1929 , Bot.Mag .Tokyo 43:292.non E lymus yezoensis Honda , 1930.-E lymus nip pon-
349
　　　 四川农业大学学报 第 26 卷
icus Jaaska , 1974 , Eesti NSV Tead.Akad.Toim ., Biol.23:6.E lymus yezoensis (Honda)T .Osada ,
1989 , Ill.Grass.Jap.738.
Type collection:Japan:“Yezo-Kamo jigusa” .Holo type:TI !
Description:Perennial wi thout creeping underground rhizomes and w i th f ibrous roots.Culms tufted;
60-100 cm tall;g labrous.Leaf sheaths glabrous.Leaf blade s f lat;on upper surfaces sparsely pubescent;
on low er surfaces scabrous;margins g labrous.Spikes slightly nodding or nearly erect , and wi th sparse re-
mo te spikelets;10-18 cm long.Spikelets disposit ion bilateral i.e.normal;g reen , with 5-7 f lorets.
Glumes lanceo late;unequal;scabrous on the nerves;fi rst g lumes 6-7.5 mm long ;w ith 5 nerves;second
g lumes 8-9 mm long;w ith 7 ne rves;t ips acuminate or acute and mucronate.Lemmas , at least the fi rst 7
-9 mm long;subco riaceous , w ith back hirsute , rarely glabrous , and w ith rigidly ciliate along the mar-
gins;lemma awned;lemma awn st raight;lemma awn 10-20(-25)mm long.Palea equal to lemma;a-
pex obtuse and ema rg inate;7-9 mm long;keels ciliate on whole leng th , or o f 1/2 or 3/4 on upper par t;
puberulent on back betw een keels.Anthers yellow;2 mm long.
Cytology:Chromosome number 2n=4x =28.Genomes StStYY[ 25] .
Distribution:Japan , Russia , China and Korea;in forest glades.
Dubious Taxa
The fol lowing taxa belong to Roegneria in morpho logy .Their genomic consti tution needs to be com-
fi rmed.
44.R.aliana Keng
Nomenclature:R.aliena Keng , 1963 , in Keng &S.L .Chen , Acta N anking Univ.(Biol.)3(1):31;
1959 , Fl.Ill.Pl.Prim.Sin.Gram:366(in Chinese).-E lymus sem icostatus ssp.al ienus(Keng)A.Love ,
1984 , Feddes Rep.95:453.-E lymus alienus (Keng)S.L .Chen , 1997 , Novon 7(3):227.
Type collection:China:Hobei:Leiyuan Xian:“Prope pagum Tsun-Er-Kou , alt.1100 m , 14 VI ,
1934 , K.M .Liou 2424” .Holo type:PE!
Description:Perennial wi th short rhizomes and wi th f ibrous roo ts.Culms loosely tuf ted;70 cm tall;
g labrous.Leaf sheaths glabrous and pube rulent on the basal ones.Leaf blades f lat;on upper surfaces pi-
lose;on lowe r surfaces glabrous;margins glabrous.Spikes e rect , o r slight ly curved , and wi th sparse re-
mo te spikelets;15 cm long .Rachis inte rnodes scabrous on tw o main ang les;10-15 mm long (the low est
up to 26 mm).Spikelets disposi tion bilateral i.e.no rmal;g reen and purple-tinged;with 5-6 flo rets;w ith
rachilla joints minutely puberulent;rachilla joints leng th 2-2.5 mm long .G lumes oblong-lanceolate and
symme trical;equal;scabrous on the nerves;fi rst glumes 7-8 mm long ;w ith 3-5 nerves;second glumes
7-8 mm long;w ith 3-6(-7)nerves;tips acuminate , acute and mucronate , 1-too thed , and awned , 8
-10 mm.Lemmas , at least the f irst 10 mm long ;w ith back glabrous , scabrous on the nerves , w ith callus
w ith minute hai rs on tw o sides , and wi th long callus hairs laterally;lemma awned;lemma awn straight and
curved or slightly curved;lemma awn 12-25 mm long.Palea slightly shorter than lemma;apex obtuse and emar-
ginate;9 mm long;keels ciliate on upper part.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Hobei , Shanxi;roadsides.
45.R.altaica(D.F.Cui)L.B.Cai
Nomenclature:R.altaica(D.F.Cui)L.B.Cai , 1997 , Acta Phy totax.Sin.35(2):156(inv alid ?).-
E lymus al taicus D.F .Cui , 1990 , Bull.Bo t.Res.10(3):28.
350
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
Type col lection:China:Xinjiang , A ltai:“In pratis et sylvis montium , June 25 , 1972.A 721154” .
Ho lotype:XJA-IAC!
Description:Perennial w ithout creeping underg round rhizomes.Culms tufted;60-75 cm tall;gla-
brous.Leaf sheaths g labrous.Leaf blades f lat and subinvo lute;on upper surfaces scabrous;on low er sur-
faces g labrous;margins glabrous.Spikes erect and w ith dense spikelets;8-9 cm long.Rachis internodes
g labrous and minute ciliate on tw o main angles;7-9 mm long.Spikele ts disposi tion slight ly secund;pur-
ple-tinged;w ith 3-4 f lo rets;w ith rachi lla joints densely pubescent;rachilla joints leng th 2-3 mm long.
Glumes broadly lanceolate and symmetrical;unequal;g labrous and w i th membranous margins;f irst
g lumes 9-10 mm long;w ith 5 nerves;second glumes 10-11 mm long;w ith 5 nerves;tips acute or rarely
acute.Lemmas , at least the f irst 10-12 mm long;with back appressed minutely pubescent and w ith cal-
lus w i th minute hairs on tw o sides;lemma awned;lemma awn curved or slightly curved and bidentate at
the base;lemma awn 14-18 mm long.Palea slight ly sho rter than lemma and sho rter than lemma;apex a-
cuminate;keels ciliate on 1/2 of upper part;w ith g labrous back.A nthe rs y ellow ;2.5 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China , Xinjiang.
46.R.angusta L.B.Cai
Nomenclature:R.angusta L .B.Cai , 1996 , Acta Phy totax .Sin.34(3):332-333.-Elymus angus-
t ispiculatus S.L.Chen &G.Zhu , 2002 , Novon 12(3):425.
Type collection:China:Qinghai:Xunhua:“In clivis pratensibus , al t.2200 m , 8 July 1964 , G.X.Lei
841810” .Holotype:HNWP !
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms loo sely
tufted and solitary ;80-100 cm tall;g labrous.Leaf sheaths glabrous and ciliate on the margins.Leaf
blades f lat;on upper surfaces g labrous and scabrous;on low er surfaces glabrous;margins glabrous.
Spikes e rect o r slightly curved;16-20 cm long;6 mm w ide.Rachis internodes scabrous and minute ciliate
on tw o main ang les;8-12 mm long (the lowe st up to 20 mm).Spikele ts disposi tion bila teral i.e.no rmal;
g reen;w ith 4-6 f lorets;w ith rachi lla joints minutely puberulent;rachilla joints leng th 1 mm long.
Glumes lanceola te and symmetrical;subequal;glabrous and scabrous on the nerves;f irst g lumes 8-9.5
mm long ;w ith 3 nerves;second glumes 8-10 mm long;w ith 3 nerves;tips acute and mucronate.Lem-
mas , at least the fi rst 10-12 mm long;w ith back glabrous , w ith callus g labrous , and w ith callus wi th mi-
nute hai rs;lemma awned;lemma awn st raight;lemma awn 20-25 mm long.Palea equal to lemma;apex
rounded-subobtuse;10-12 mm long;keels ciliate on upper part;w ith g labrous back.A nthers yellow ;2
-2.7 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Qinghai , on mountain slopes;al t.2200 m .
47.R.anthosachnoides Keng var.scabri lemma L.B.Cai
Nomenclature:var.scabri lemma L.B.Cai , 1997 , Acta Phy totax.Sin.35 (2):165.
Type collection:China:Qinghai:“In clivis , alt.3500 m , 1963-07-25 , Y.C.Yang 401” .Holo type:
HNWP !
Description:var.scabri lemma dif fers f rom var.anthosachnoides by i ts lemma back g labrous or only
sparsely minute spinulous.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Qinghai , Sichuan;on slopes;alt.2700-3550 m.
351
　　　 四川农业大学学报 第 26 卷
48.R.antiqua(Nevski)J.L.Yang , Yen &B.R.Baum
Nomenclature:R.antiqua (Nevski)J.L .Yang , Yen et Baum , comb.nov.-Agropy ron ant iquum
Nevski , 1932 , Ize.Bot.Sada An SSSR , 30:515.-Elymus antiquus(Nevski)Tzvel., 1968 , Rast Tsentr.
Azii 4:220.
Type collection:China:Xizang (Tibet):“Mekong River , near Chok-Cho , 12000 ft.in Picea forest , 31
VIII 1900 , no .519 , V.F .Ladgin” .Holo type:LE!
Description:Perennial wi thout creeping underground rhizomes and w i th f ibrous roots.Culms tufted;
40-100 cm tall;g labrous , puberulent or scabrous below the spikes , and pube rulent on the nodes.Leaf
sheaths g labrous , sparsely pubescent , and ciliate on the margins.Leaf blades f lat and subinvolute;on up-
per surfaces scabrous o r hairy;on low er surfaces scabrous;marg ins glabrous and scabrous.Spikes nodding
and f lexuous or slightly f lexuous;(7.5-)9-21 cm long;4-10 mm w ide.Rachis internodes scabrous ,
g labrous , and scabrous on tw o main angles;6-11(-15)mm long.Spikelets dispo sitio n bilateral i.e.nor-
mal and wi th very short peduncles(0.4 mm long);g reen and slightly purple;w ith 3-4 flo re ts;w ith ra-
chilla joints minutely pubescent and villose;rachilla joints leng th 2-3 mm long .Glumes linear-lanceolate
and symmetrical;unequal;g labrous and scabrous on the nerves;first g lumes 1.5-2 mm long ;with(1-)
2-3 nerves;second glumes 4-5 mm long ;w ith 3-5 nerves;tips acute o r mucronate.Lemmas , at least
the fi rst 8-11.5 mm long;w ith back scabrous or scaberulous , hispid on the margins , and w ith callus w ith
minute hairs on tw o sides;lemma awned;lemma awn divaricate or slight ly divaricate and from the promi-
nent midnerves ending into an awn;lemma aw n 21-30 mm long.Palea equal to lemma o r sho rter than
lemma;apex obtuse or rounded-subobtuse;7-9 mm long;keels ciliate on 1/2 o f upper part;pubescent on
back betw een keels.Anthers yellow and yellow ish-purple;2-3 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Xizang , Sichuan;on slopes , in fo rest;al t.3600-3660 m.
49.R.barbical la Ohwi
49a.var.pubinodes Keng
Nomenclature:var.pubinod is Keng , 1963 , in Keng &S.L.Chen , Acta Nanking Univ .(Bio l.)3(1):
24.1959 , Fl.Ill.Pl.Sin.Gram:359(in Chinese).-E lymus barbical lus(Ohw i)S.L.Chen var.pubinodis
(Keng)S.L .Chen , 1997 , Novon 7(3):227.
Type collection:China:Hobei:“Nei-kiu Hsien , ad declivi tatem crescens.17 VI 1951 , H .Y.Liou
441” .Holo type:PE!
Description:This varie ty dif fers f rom var.barbical la by i ts culms sho rter , 40-50 cm tall , nodes cov-
ered dense w hite villo se , and pube scent below nodes;by its leaf sheaths margins ciliate;by its longer
g lumes , fi rst glumes 10-14 mm long , second g lumes 12-14.5 mm long;and by its lemmas longer , at
least the fi rst 12-13 mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Gansu , S hanxi , Inner M ongolia;on slopesof ravines;alt.1700 m.
49b.var.pubi f olia Keng
Nomenclature:var.pubi folia Keng , 1963 , in Keng &S.L.Chen , Acta Nanking Univ .(Bio l.)3(1):
25;1959 , Fl.Il l.Pl.Sin.Gram:359(in Chinese).-Elymus barbical lus(Ohwi)S.L .Chen var.pubi f ol i-
us(Keng)S.L.Chen , 1997 , Novon 7(3):227.
Type collection:China:“Shanxi:Lin-Shih Hsien , M ien Shan , ad saltum crescens , alt.1350 m , V 29
1929 , T .Tang 887”.Ho lotype:PE !
352
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
Description:var.pubi f olia di ffers from var.barbical la by its leaf blades densely pubescent and culms
sho rte r , 50 cm tall.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Shanxi , Shaanxi , Inner M ogo lia , Yunnan;on meadow s of ravine;alt.1350-
1700 m.
50.R.burchan-buddae (Nevski)J.L.Yang , B.R.Baum et Yen
Nomenclature:R.burchan-buddae (Nevski)J.L.Yang , B.R.Baum et Yen , comb.nov.-Agropy ron
burchan-bud dae Nevski , 1932 , Ize.Bot.Sada.AN SSSR.30:514.-E lymusburchan-buddae(Nevski)Tz-
vel., 1968 , Rast Tsentr.Azii.4:220.
Type collection:China:Qinghai:“Burchan-Budda mountain , ravine o f no rther slope , on sandy-pebble
riverbed , alt.10-13000 f t.12 VII 1901 , no.234 , V.F.Ladgin” .Holotype ?
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
densely tuf ted;50 cm tall;glabrous.Leaf sheaths g labrous.Leaf blades loo sely involute and subinvolute;
on upper surfaces scabrous and sparsely pubescent on nerves;on lowe r surfaces glabrous;margins gla-
brous.Spikes f lexuous or slight ly f lexuous and w i th sparse remo te spikelets;5-13(-18)cm long.Ra-
chis internodes glabrous;6-10(-18)mm long on upper part and(13-)18-30 mm long on the low er
part.Spikelets disposi tion bilateral i.e.no rmal;g reenish purple;w ith 5-6 f lorets;w ith rachilla joints pu-
berulent;rachil la joints leng th 1.5 -3 mm long.Glumes oblong-lanceolate;unequal;g labrous;f irst
g lumes 3-3.5 mm long ;with 3 ne rves;second glumes 4-4.5 mm long ;w ith 3-5 nerves;t ips acute.
Lemmas , at least the fir st 9-10 mm long;w ith back glabrous , scabrous on side s , and w i th callus w ith
minute hairs and longer hair s on tw o sides;lemma awned;lemma awn divaricate o r slight ly div aricate and
st raight;lemma awn (13-)15-20(-21)mm long.Palea equal to lemma;apex obtuse;8.5-9 mm
long;keels ciliate on 1/2 of upper part;w ith glabrous back.Anthers yellow ;2.5-3 mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Qinghai;on slopes of ravins , on sandy-pebble riverbed;al t.3050-3960 m.
51.R.buschiana(Roshev.)Nevski
Nomenclature:R.buschiana (Roshev.)Nevski , 1934 , Fl.SSSR.2:620.-Agropy ron buschianum
Roshev., 1932 , Ize.Bo t.Sada.AN SSSR.30:301.-Elymus buschianus (Roshev.)Tzvel., 1972 , N ov.
Sist.Vyssch.Rast.9:61.
Type collection:Russia:Caucasia:“Prov Te rek in g larescsis glaciei aeterni in angustis.Adir 7500 et
Irik 8000 f t.14 VII 1911.E.A.et N.A.Busch” .Ho lotype:LE!
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms densely
tufted;(45-)50-70(-80)cm tall;glabrous and w axy whit ish powdery below nodes.Leaf sheaths gla-
brous.Leaf blades flat or subinvolute;on upper surfaces scabrous;on low er surfaces glabrous;margins
g labrous.Spikes erect;8-19 cm long;7-8 mm wide.Rachis internodes scabrous on tw o main ang les ,
g labrous , and pruinose;5 -10 mm long (the low est up to 40 mm).Spikelets dispo sitio n secund and
slight ly secund;g laucous green;w ith (2-)3-5 (-6)f lorets;w ith rachilla joints minutely pubescent;
rachilla joints leng th 2.5-3 mm long.Glumes lanceolate;equal;scabrous on the nerves and wi th mem-
branous margins;f irst g lumes 7-10 mm long ;with 5-7 nerves;second glumes 7-10 mm long;w ith 5-
7 ne rv es;tips e ro se , acuminate and ending in a point , and wi th 2-3 tee th.Lemmas , at least the first 8-
10 mm long;w ith back appressed minutely pubescent;lemma not aw ned but mucronate(0.5 mm);lemma
awn bidentate at the base.Palea slight ly shor ter than lemma;apex emarginate;7.8-9.8 mm long;keels
353
　　　 四川农业大学学报 第 26 卷
ci liate on 1/3 of upper par t and ciliate on 1/2 o f upper part;with g labrous back.A nthers y ellow ;2-2.5
mm long .
Cytology:Chromosome number 2n=4x =28[ 14] .Genomes ?
Distribution:Russia:the Great Caucasia;On sw ales and stony slopes;alt.2300-2440 m .
52.R.ci liaris(Trin.)Nevski
52a.var.hackeliana(Honda)L.B.Cai
Nomenclature:var.hackel iana(Honda)L.B.Cai , 1997 , Acta Phy to tax.Sin.35(2):176.-Agro-
p yron japonicum Honda var.hackelianum Honda , 1927 , Bot.Mag.Tokyo 41:385.-Roegneria japonen-
sis (Honda)Keng var.hackeliana(Honda)Keng , 1963 , in Keng &S.L.Chen , Acta Nanking U niv.(Bi-
ol.)3(1):63.-Agropy ron cil iare var.pi losum (Kor sh.)Honda , 1965 , Fl.Jap:155(in Eng lish).
Type collection:Korea:“Corea:In agris Hongno , ins Quelpaert (Taquet , no.1881 , anno 1908)” .
Ho lotype:TI !
Description:It differs f rom var.ci liaris by its lemma back glabrous o r scabrous , and g lume margins
w ithout cilia.
Cytology:Chromosome number 2x=?Genome ?
Distribution:China , Korea and Japan;on slopes and meadow .
52b.var.submutica(Honda)Keng
Nomenclature:var.submutica (Honda)Keng , 1963 , in Keng &S.L.Chen , Acta Nanking Univ.3
(1):62.-Agropy ron cil iare var.submuticum Honda , 1930 , J.Fac.Univ.Tokyo sect.III.Bo t:27.-
Agropy ron cil iare f.submuticum (Honda)Ohwi , 1941 , Acta Phy to tax.Geobo t.10:96.-E lymus ci l iar-
is (T rin.)T zvel.var.submut icus(Honda)S.L.Chen , 1997 , Novon 7(3):238.
Type collection:Japan:“Kiusiu:in lit tore Kushikino , prov .Satsuma (T .Doi , no.84 , Anno 1925)” .
Ho lotype:TI !
Description:It differs f rom var.ci l iaris by i ts lemma apex mucronate o r w ith sho rt aw n , 1-3 (-8)
mm long .
Cytology:Chromosome number 2n=?Genome ?
Distribution:Japan , China;on slope g rassland;al t.1000-1500 m.
53.R.crassa L.B.Cai
Nomenclature:R.crassa L .B.Cai , 1996 , Acta Phy totax.Sin.34(3):332.-Elymus strictus(Keng)
A.Love var.crassus(L.B.Cai)S.L.Chen &G.Zhu , Novon 12 (3):428.
Type collection:China:Ningxia:“Yanchi , in pratis cliv orum.alt.1800 m.July 21 , 1977 , Z.Y.Zhang
et H .J.Wang 140” .Holo type:WUK!
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms loo sely
tufted;50-90 cm tall;slightly scabrous or scabrous.Leaf sheaths sparsely scabrous o r scaberulous.Leaf
blades flat and invo lute on the margins;on upper surfaces scabrous or sparsely villo se;on low er surfaces
g labrous o r scabrous;margins glabrous.Spikes erect;14-18 cm long ;5-6 mm w ide.Rachis internodes
minute ciliate on tw o main angles;5-10 mm long(the lowe st up to 25 mm).Spikelets dispo sitio n bilater-
al i.e.normal;g reen;w ith 6-8 f lorets;w ith rachilla joints glabrous;rachilla joints leng th 2-3 mm long.
Glumes oblong-lanceolate;unequal;g labrous and scabrous on the nerves;fi rst g lumes 8 -9 mm long;
w ith 5-7 nerves;second g lumes 9-10 mm long ;with 7 nerves;tips acute and mucronate.Lemmas , at
least the fi rst 8-10 mm long;w ith back g labrous , uppe r part sparsely minute spinulo se on nerves , and
354
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
w ith callus wi th minute hai rs;lemma awned;lemma awn curved ;lemma awn 15-18 mm long.Palea
subequal to lemma;apex emarginate and truncate;8-10 mm long;keels ciliate on upper part;with gla-
brous back.Anthers yellow ;2 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Ningxia , Qinghai;on slopes steppe and alpine meadow , al t.1800-3900 m.
54.R.curt iaristata L.B.Cai
Nomenclature:R .curtiaristata L.B.Cai , 1996 , G uihaia 16(3):200.-E lymus curtiaristatus (L.B.
Cai)S.L.Chen &G.Zhu , 2002 , Novon 12(3):426.
Type collection:China:“Xizang :Changdu , Xishan , in clivis , alt.3400 m , 22 Aug.1973.Exped.Xi-
zang 1988” .Ho lotype:HNWP !
Description:Perennial wi th short rhizomes and w ithout fibrous roo ts.Culms lo osely tuf ted;40-65
cm tall;scaberulous.Leaf sheaths g labrous and w ith re tro rse hair s on the basal ones.Leaf blades invo-
lute;on upper surface s g labrous or sparsely villo se;on low er surfaces glabrous;margins g labrous.Spikes
erect o r slight ly curved;9-12 cm long;4.5-5 mm wide.Rachis internodes g labrous and spinulose on
tw o main angles;7-12 mm long.Spikelets dispo sition bilate ral i.e.no rmal;slightly purple;with 5-7
f lorets;with rachi lla joints puberulent;rachilla joints leng th 2-3 mm long.Glumes lanceo late and ob-
long-lanceo late;subequal;glabrous and scabrous on the nerves;f irst g lumes 5-6 mm long ;w ith 3-5
nerves;second g lumes 5-6 mm long;w ith 3-5 nerves;tips acute and mucronate.Lemmas , at least the
fi rst 9-10 mm long;w ith back glabrous , marg ins and upper part scaberulous , and w ith callus wi th mi-
nute hai rs;lemma awned;lemma awn straight;lemma awn 5-10 mm long.Palea longer than lemma;a-
pex obtuse and truncate;10-11 mm long;keels ciliate on upper part;scabrous on upper part of back be-
tween keels.A nthe rs black;2.5-3.2 mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Xizang;among shrubs;al t.3400 m .
55.R.curvata (Nevski)Nevski var.macrolepis J.L.Yang , B.R.Baum et Yen
Nomenclature:var.macrolep is(Drob.)J.L.Yang , Baum et Yen , comb.nov.-Agropyronmacrolepis
Drob., 1925 , Feddes Rep.21:41.pro parte.-Semeiostachys macrolepis Drob., 1941 , Fl.Uzbek.1:382.
Type collection:Uzbeckistan:“Prov.Sy r-Darja , Dist r.Aulie-atat.Fl.A rabik(Abolin et Popov , 1921 ,
no.8741)” .Holo type ?
Description:I t differs f rom var.curvata by its spikes longer (20 cm long)and spikele ts wi th 7-9 f lo-
rets;by its glumes wi th 5-11 nerves , and lemma awn shorter (15-25 mm long).
Cytology:Chromosome number ?
Distribution:Uzbeckistan.
56.R.duthiei (Meld.)J.L.Yang , B.R.Baum et Yen
Nomenclature:R.d uthiei (Meld.)J.L.Yang , Baum et Yen comb.nov .-Agropy ron d uthiei Mel-
deris , 1960 , in Bo r , Grass.Murm.Cey l.Ind.Pak:691.non (Stapf)Bo r , 1940.-E lymus longearistatus
subsp.d uthiei A.Love , 1984 , Feddes Rep.95:468.
Type collection:India:“W.Himalaya:Nr.Simla , 7000-8000 f t.23 Aug.1889 , J.F.Duthiei 10123” .
Ho lotype:K!
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
ed;40-70 cm tall;glabrous.Leaf sheaths ciliate on the margins.Leaf blades f lat;on upper surfaces gla-
355
　　　 四川农业大学学报 第 26 卷
brous;on low er surfaces glabrous;margins long pi lose.Spikes erect and w ith sparse remo te spikelets;10
-18 cm long.Rachis internodes scabrous on tw o main ang les and g labrous.Spikelets dispo sitio n bilateral
i.e.normal;g reen and purple-tinged;w ith 3-5(-6)f lorets.Glumes lanceo late , linear-lanceo late , and
symme trical;unequal;scabrous on the nerves and w ith membranous margins;f irst glumes 3.5-5 mm
long;w ith 3-5 nerves;second g lumes 6-9 mm long;w ith 3-5 nerves;t ips acuminate , acute and mu-
cronate , acuminate and ending in a point , and 1-toothed.Lemmas , at least the f irst 10-12 mm long;
w ith back uppe r pa rt sparsely minute spinulo se on nerves;lemma awned;lemma awn slight ly curved and
w idened at the base;lemma awn (20-)25-30(-40)mm long.Palea subequal to lemma;apex obtuse
and emarginate;keels ciliate on 1/2 o f upper par t;top wi th sho rt setulo se betw een keels.Anthers yellow ;
2.8-3.2 mm long.
Cytology:Chromosome number 2n=4x =28[ 36] .
Distribution:India;on slopes;alt.2100-2450 m .
57.R.f lexuosa L.B.Cai
Nomenclature:R.f lexuosa L.B.Cai , 1996 , Acta Phy to tax.Sin.34 (3):330 -332.-Elymus si-
no f lexuosus S.L .Chen &G.Zhu.Novon 2002 , 12(3):428.
Type collection:China:“Gansu:Zhanye , in clivis , al t.1750 m.Aug.1 , 1957 , X.Z.Zhang 203” .
Ho lotype:WUK!
Description:Pe rennial w i th sho rt rhizomes and wi thout fibrous roo ts.Culms tuf ted;30-50 cm tall;
g labrous.Leaf sheaths glabrous.Leaf blades involute;on upper surface s scabrous and sparsely pubescent;
on low er surfaces glabrous;marg ins glabrous.Spikes slight ly nodding and w ith sparse remo te spikelets;
10-16 cm long .Rachis internodes ang les hi rsute;12-16 mm long .Spikelets dispo sitio n bilate ral i.e.
normal;pale yellowish green;w ith 5-7 flo re ts;with rachilla joints pube rulent.Glumes oblong-lanceolate
and symmetrical;unequal;g labrous;fir st g lumes 5-6 mm long;w ith 5-7 nerves;second glumes 7-8
mm long ;w ith 5-7 nerves;tips acute and pungent.Lemmas , at least the fi rst 9-10 mm long;w ith back
hirsute;lemma awned;lemma aw n divaricate o r slightly divaricate;lemma awn 20-25 mm long.Palea e-
qual to lemma and slight ly shorter than lemma;apex t runcate;keels ciliate on who le length;with glabrous
back.A nthe rs y ellow ;1.5-2 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China;Gansu;among shrubs;al t.1750-3520 m.
58.R.f ol iosa Keng
Nomenclature:R.foliosa Keng , 1963 , in Keng and S.L.Chen , Acta Nanking U niv.(Biol.)3(1):
32;1959 , Fl.Ill.Pl.Prim.Sin.G ram :366(in Chinese).-Elymus sem icostatus subsp.foliosus(Keng)A.
Love , 1984 , Feddes Rep.95:454.-E.f oliosus(Keng)S.L.Chen , 1987 , Bull.Nanjing Bot.Gard.Mem.
Sun Yat Sen 1987:9.-E.al iena(Keng)S.L.Chen , 1997 , Novon 7(3):227.
Type collection:China:Inner M ongolia:“Peiling Miao , Madoni Ama , g ramen caespi to sum ad saxosa
umbrosa crescens , 10 V III 1935 , Roerich Exped.770” .Holo type:PE!
Description:Perennial wi th short rhizomes and w ithout fibrous roo ts.Culms lo osely tuf ted;30-60
cm tall;glabrous.Leaf sheaths g labrous and w ith re tro rse hairs on the basal ones.Leaf blades f lat;on up-
per surfaces sparsely pi lose;on low er surfaces glabrous;margins glabrous.Spikes erect o r slight ly
curved , and w ith sparse remote spikelets;7-13 cm long .Rachis internodes scabrous on tw o main ang les;
7-10 mm long (the low est up to 18 mm long).Spikelets dispo sitio n bilateral i.e.normal;green;w ith 4-
6 f lorets;w ith rachilla joints pilo se;rachilla joints leng th 1 mm long.Glumes oblong-lanceolate and sym-
356
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
metrical;unequal;g labrous and scabrous on the nerves;f irst g lumes 7-8 mm long;with 3-5 nerves;
second glumes 9-10 mm long ;w ith 5-7 nerves;tips acuminate or acute.Lemmas , at least the f irst 9-
10 mm long;w ith back glabrous , puberulous on margins , with callus wi th minute hai rs on tw o sides , cal-
lus hairs 0.4 mm long ;lemma awned;lemma aw n st raight and o r slightly curved;lemma awn 10-18 mm
long .Palea shorter than lemma;apex obtuse;7-8 mm long;keels ciliate on 1/3 of uppe r part;w ith gla-
brous back and uppe r par t of back appressed puberulous betw een keels.Anthers yellow ;2.5 mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Inner M ongolia;on rocky slopes.
59.R.f ormosana (Honda)Ohwi
Nomenclature:R.formosana(Honda)Ohwi , 1941 , Acta Phy totax &Geobot.10(2):95.-Agro-
p yron f ormosanum Honda , 1927 , Bot.Mag.Tokyo 41:385.-E lymus f ormosanus (Honda)A.Love ,
1984 , Feddes Rep.95:449.
Type collection:China:Taiw an:“ in morte Noko-zan(E.Matsuda , no.13 e t 30.anno 1919)” .Holo-
type:TI !
Description:Perennial w ithout creeping underground rhizomes and w ith fibrous roo ts.Culms solitary ;
60-80 cm tal l;g labrous.Leaf sheaths glabrous and wi th ret rorse hairs on the basal ones.Leaf blades
f lat;on upper surfaces g labrous and scabrous;on low er surfaces g labrous and scabrous;margins glabrous.
Spikes sligh tly nodding;(10-)15-20 cm long .Rachis internodes scabrous on tw o main angles;7-13
mm long (the low est 15 mm).Spikelets disposi tion bilateral i.e.no rmal;g reen;with 5-7 f lorets;w ith
rachilla joints pube rulent;rachil la joints length 1.5 mm long.Glumes linear-lanceolate;unequal;scabrous
o r scaberulous;fi rst g lumes 5 -6 mm long ;with 5 nerves;second g lumes 7 -8 mm long;w ith 5-7
nerves;tips acute.Lemmas , at least the f irst 8 mm long ;w ith back scabrous , sho rt ciliate along the mar-
gins , appressed minutely pube scent , w ith callus wi th minute hairs (0.3 mm);lemma awned;lemma awn
curved o r slightly curved and w idened at the base;lemma awn 20 mm long.Palea equal to lemma;apex
obtuse and emarginate;8 mm long;keels ciliate on 1/3-1/2 of upper part;pubescent on back betw een
keels.A nthers y ellow ;2-2.5 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Taiw an , alpine region.
59a.var.longearistata Keng
Nomenclature:var.longearistata Keng , 1963 , in Keng and S.L.Chen , Acta Nanking U niv.(Biol.)3
(1):59;1959 , Fl.Ill.Pl.Prim.Sin.G ram :386(in Chinese).
Type col lection:China:“Taiw an bo r:ta-ping shan , ad declivitatem crescens , VI 1993 , Noriaki Fukuy-
ama 4092”.Ho lotype:NAS!
Description:It differs f rom var.f ormosana by its leaf blades narrow er only 2-4 mm broad;by its
spikes only 7-10 mm long ;by its g lumes longer , second g lume 9 mm long;by i ts lemma longer , 8.5-11
mm long and awn 35 mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Taiw an;on slopes.
59b.var.pubigera Keng
Nomenclature:var.pubigera Keng , 1963 , in Keng and S.L.Chen , A cta N anking Univ .(Bio l.)3(1):
60;1959 , Fl.Ill.Pl.Prim .Sin.Gram:387 (in Chinese).-Elymus f ormosanus(Honda)A.Love va r.pu-
357
　　　 四川农业大学学报 第 26 卷
bige rus(Keng)S.L.Chen , 1997 , Novon 7(3):228.
Type collection:China:Taiw an:“Spicemen Taiw an sed sine ulle datu viditur , ex herbario Fan M em.
Inst.Bio l.No.82369” .Ho lotype:PE !
Description:This varie ty dif fers f rom var.f ormosana by i ts culms sho rte r , 39-50 cm tall;by its leaf
sheaths pubescent on the basal ones;and leaf blades narrow , 2-4 mm broad;by its spikes 10-12 cm long
and lemma awn 10-20 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Taiw an.
60.R.glaberrima Keng et S.L.Chen
Nomenclature:R.g laberrima Keng et S.L .Chen , 1963 , Acta Nanking U niv.(Bio l.)3(1):72-73.
-E lymus g laberrimus(Keng e t S.L.Chen)S.L.Chen , 1987 , Bull.Nanjing Bot.Gard.Mem.Sun Yat Sen
1987:9.
Type collection:China:Xinjiang :“A-Lao-Tei Hsien , Klamart-Kou , ad declivi tatem aridam crescdens ,
alt.1400 m , 27 VIII 1956 , R.C.Ching 2548” .Holo type:PE !
Description:Perennial wi thout creeping underground rhizomes and w i th f ibrous roots.Culms tufted;
60-80 cm tall;g labrous.Leaf sheaths g labrous and puberulent on the basal ones.Leaf blades flat or invo-
lute;on upper surfaces scabrous;on low er surfaces g labrous;margins glabrous.Spikes erect and w ith
sparse remote spikelets;8-10 cm long.Rachis inte rnodes scabrous on tw o main angles;7-17 mm long.
Spikelets dispo sition bila teral i.e.normal;g reen and st raw yellow ;w ith 6-9 flo rets;with rachi lla joints
g labrous;rachilla joints length 1.5-2 mm long .Glumes oblong-lanceo late and assymmetrical;unequal;
g labrous and w ith membranous marg ins;fi rst glumes 4-6 mm long;w ith 3(4-5)nerves;second glumes
5.5-7.5 mm long;with 3-5 nerves;tips acute , and 1-too thed.Lemmas , at least the fi rst 9 mm long;
w ith back glabrous and w ith callus glabrous;lemma awned;lemma awn curved o r slightly curved;lemma
awn 10-20 mm long.Palea equal to lemma and rarely slight ly longer than lemma;apex t runcate and e-
marginate;8-9 mm long;keels ciliate on 1/3 o f upper part;w ith g labrous back and scaberulous a t the
base betw een keels.Anthers yellow ;4.5 mm long .
Cytology:Chromosome number 2n=4x =28.Genomes ?
Distribution:China:Xinjiang;on slopes;pebbles;screes and montane steppes;1400-2100 m.
61.R.gmelinii (Ledeb.)Kitag.
61a.var.macranthera(Ohwi)J.L.Yang , B.R.Baum et Yen
Nomenclature:var.macranthera (Ohwi)J.L.Yang , B.R.Baum et Yen , comb.nov.-Agropyron
turczaninov ii (Drob.)Nevski var.macrantherum Ohwi , 1941 , Acta Phy totax .&Geobot.10(2):98.-
Roegneriamacranthera (Ohw i)L.B.Cai , 1997 , Acta Phy to tax.Sin.35 (2):176.-E lymus gmelini i
(Ledeb.)Tzvel.var.macrantherus(Ohwi)S.L.Chen &G.Zhu , 2002 , Novon 12(3):428.
Type collection:China:“Mongolia interior boreali-orientalis(Kochito orientalis), leg .I.Hirayo shi n.
10277” .Ho lotype:KYO !
It dif fe rs f rom va r.gmel inii by i ts culms rather stout;by i ts tw o glumes almost equal , 10-15 mm
long , equal to or the second glume longer than the fi rst lemma.
Cytology:chromosome number 2n=?Genome ?
Distribution:China:Xinjiang , Inner M ongo lia , Helong jiang;ro adside of slopes , among bushes;al t.
1800-2400 m.
358
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
61b.var.pohuashanensis Keng
Nomenclature:var.pohuashanensis Keng , 1963 , in Keng and S.L.Chen , Acta Nanking Univ .(Bio l.)
3(1):67;1959 , Fl.Ill.Pl.Prim .Sin.G ram:395(in Chinese).
Type collection:China:“Hopei:Pohuashan ad M ontem crescens , 16 VII 1918 , Y.Yabe Sine nume ro” .
Ho lotype:NAS!
Description:It dif fers f rom var.gmel inii by its culms sho rter(50-70 cm tall);leaf blades harden and
involute , 2-6 mm broad;by it spikes slightly curvate and nodding , rachis internodes slende r;by its
spikelets 5-7 f lo rets.
Cytology:Chromosome number 2n=4x =28.Genomes ?
Distribution:China:Hebei and Inner Mongolia;on slpes;al t.2000 m .
61c.var.tenuiseta(Ohwi)J.L.Yang , B.R.Baum et Yen
Nomenclature:var.tenuiseta(Ohwi)J.L.Yang , B.R.Baum et Yen , comb.nov-Roegneria turczani-
nov i (Drob.)Nevski v ar.tenuiseta Ohw i , 1941 , Acta Phy to tax .&Geobot.10(2):97.-Elymus gmel i-
nii subsp.tenuisetum (Ohw i)A.Love , 1984 , Feddes Rep.95:456.-Agropy rum gmel inii subsp.tenui-
setum (Ohw i)T .Koyama , 1987 , Grass.Jap.& Neighb.Reg:484.-E lymus gmel inii var.tenuisetus
(Ohwi)T .Osada , 1990 , J.Jap.Bot.65(9):266.
Type collection:Japan:“Hondo:Mount Kirigamine , in Shinano Prov.(J.Ohw i , n.8355)” .Ho lo-
ty pe:KYO !
Description:It differs f rom var.gmelini i by its leaf blades harden and invo lute on ma rg ins , 2-2.5
mm broad;by its spikes slender , 2 -3 mm wide , curved o r nodding , rachis internodes slender;by its
spikelets 3 flo rets and one ste riled lemma.
Cytology:Chromosome number 2n=?Genome ?
Distribution:Japan , Russia , Korea , China;on slopes.
62.R.×graci lis L.B.Cai
Nomenclature:×R.graci li s L.B.Cai , 1996 , Acta Phy totax .Sin.34(3):328-330.-E lymus caia-
nus S.L.Chen &G.Zhu , 2002 , Novon 12(3):425.
Type collection:China:Xizang:“Gongbo gyamda , ad ripas fluvio rum , al t.3970 m , Sept.21 , 1988 ,
J.L.Yang et al.880788” .Holo type:SAUTI !
Description:Pe rennial wi th shor t rhizomes and wi thout fibrous roo ts.Culms so li tary;70 cm tall;
slight ly scabrous or scabrous.Leaf sheaths glabrous.Leaf blades f lat;on uppe r surfaces scabrous and
sparsely pubescent;on low er surfaces glabrous;marg ins glabrous.Spikes slight ly nodding and w ith sparse
remo te spikelets;10-12 cm long.Rachis internodes ang le s hi rsute;5-12 mm long.Spikelets dispo sitio n
bilateral i.e.normal;g reen and slightly purple;w ith 3-4 f lorets;w ith rachilla joints puberulent;rachilla
joints leng th 2-2.5 mm long .Glumes lanceolate;unequal;scabrous on the nerves;fi rst glumes 2-3 mm
long;w ith 3 nerves;second glumes 4-5 mm long ;with 3 nerves;tips acuminate.Lemmas , at least the
fi rst 9-10 mm long;w ith back sparsely hirsute on upper part and marg ins and w i th callus w ith minute
hai rs on tw o sides;lemma awned;lemma awn curved or slight ly curved;lemma awn 6-8 mm long.Palea
equal to lemma and slight ly shor ter than lemma;apex t runcate and obtusiuscule;8-9.5 mm long ;keels
ci liate on 1/2 of uppe r pa rt;w ith glabrous back.Anthers yellow ;1 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Xizang;riversides;al t.3970 m .
This species is a hybrid w ith anthers reduced , no no rmal pollen grains and no seeds.It might be a hy-
359
　　　 四川农业大学学报 第 26 卷
brid betw een R.t schimganica and R .nutans.
63.R.hirt i f lora C.P.Wang et H.L.Yang
Nomenclature:R.hirti f lora C.P .Wang et H .L .Yang , 1984 , Bul l.Bo t.Res.4(4):86.-E lymus si-
nohirt i f lorus S.L.Chen , 1987 , Bull.Nanjing Bo t.Gard.Mem .Sun Yat Sen 1987:9.
Type collection:China:“Inner M ongolia:Da-Qing Shan , Bakuczi (near huhehaote City), 1200 m ,
meadow on the slopes.July 15 , 1960 , C.P.Wang 099” .Holo type:NMAC!
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;100 cm tall;glabrous.Leaf sheaths g labrous and spar sely pilo se near the blade.Leaf blades
f lat;on upper surface s sparsely pubescent and w ith w hite villo se on the nerves;on lower surfaces sparsely
pubescent;margins w hite villose.Spikes erect and w ith sparse remo te spikelets;12-22 cm long;4-6
mm w ide.Rachis internodes scabrous and spinulo se on tw o main ang les.Spikele ts disposi tion bilate ral i.e.
normal;g reen;w ith 7-9 f lo rets;with rachilla joints densely pubescent;rachilla joints leng th 1 mm long.
Glumes oblong-lanceolate;unequal;hirsute on nerves and margins , brow nish hirsute on basal lateral , and
appressed pubescence on ventral base;fi rst g lumes 7-8 mm long;w ith 5-7 nerves;second glumes 10
mm long;with 5-7 ne rve s;t ips acum inate.Lemmas , at least the fi rst 7-9.5 mm long;w ith back dense-
ly hi rsute to black pubescence on margins;lemma awned;lemma awn st raight and curved or slight ly
curved;lemma awn 16-25 mm long.Palea much sho rte r than lemma;apex rounded-subobtuse;5.5-8
mm long ;keels sparsely ciliate on who le leng th;w ith glabrous back.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Inner M ongolia;on meadow of slopes;al t.1200 m.
64.R.hongyuanensis L.B.Cai
Nomenclature:R.hongyuanensis L.B.Cai , 1997 , Acta Phy to tax.Sin.35 (2):157.-E lymus
hong yuanensis(L.B.Cai)S.L.Chen &G.Zhu , 2002 , Novon 12(3):426.
Type collection:China:“Sichuan:Hongyuan , in prati s , alt.3400 m , 1979-09-23 , W.Z .Xie 005” .
Ho lotype:HNWP !
Description:Perennial wi thout creeping underground rhizomes and w i th f ibrous roots.Culms tufted;
50-70 cm tall;scaberulous.Leaf sheaths g labrous.Leaf blades flat and subinvolute;on upper surfaces
sparsely villo se;on low er surfaces glabrous;margins glabrous.Spikes nodding o r slightly nodding ;7-10
cm long.Rachis internodes g labrous and scabrous on tw o main angles;5-12 mm long.Spikelets disposi-
tion bi lateral i.e.no rmal;g reen;w ith 2-3 f lo rets;w ith rachilla joints minutely pube rulent;rachi lla joints
length 0.5-0.8 mm long.Glumes lanceolate;unequal;glabrous and scabrous on the nerves;first glumes
3-4 mm long;w ith 3 ne rve s;second glumes 4-6 mm long;with 3 nerves;t ips acute.Lemmas , at least
the fi rst 8-9 mm long;w ith back sparsely spinulose and w ith callus w i th minute hai rs;lemma awned;
lemma awn st raight;lemma awn 6-11 mm long.Palea subequal to lemma;apex obtuse and truncate;7.8
-8 mm long ;keels ciliate on whole leng th;sparsely spinulo se betw een keels.Anthers black;2 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Sichuan;on the meadow s;alt.3400 m.
65.R.humilis Keng et S.L.Chen
Nomenclature:R.hum il is Keng et S.L .Chen , 1963 , in Keng and S.L.Chen , Acta N anking Univ.
(Biol.)3(1):40.-E lymus humilus (Keng et S.L .Chen)S.L .Chen , 1987 , Bull.N anjing , Bo t.Gard.
Mem .Sun Yat Sen 1987:9.
360
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
Type collection:China:Qinghai:“San-Chio-Chan 9 , ad latus viae crescens , 24 VIII , 1957 , P.C.Ken ,
C.L.Li and C.P.Yung 180” .Holo type:N!
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;20-25 cm tall;g labrous.Leaf sheaths glabrous.Leaf blades in volute;on upper surfaces
sparsely pubescent;on low er surfaces densely puberulent;margins glabrous.Spikes erect;4.5 -7 cm
long.Rachis internodes glabrous , minute puberulous , and hispid-ci liate on tw o main ang les;5-9 mm
long.Spikelets disposit ion slightly secund;g reen;w ith 3-5 f lorets;with rachi lla joints densely hi rsute;
rachilla joints leng th 1 mm long.G lumes lanceolate and asymmetrical;unequal;w ith scabrous midrib and
w ith membranous marg ins;first glumes 6-7 mm long;with 2-4 nerves;second glumes 7-8 mm long;
w ith 5 nerves;t ips acuminate and awned , 1-3 mm long.Lemmas , at least the f irst 8-9 mm long;w ith
back scabrous or scaberulous , scabrous on the nerves , and wi th callus w ith minute hairs;lemma awned;
lemma awn st raight;lemma awn 2-5 mm long .Palea equal to lemma;apex emarginate;8-9 mm long;
keels ci lia te on 1/2 of upper par t;w ith w inged keels and puberulent on back betw een keels.Anthers
yellow and yellowish-purple;2 mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Qinghai , Xinjiang;roadside.
66.R.hybrida Keng
Nomenclature:R.hybrida Keng , 1963 , in Keng and S.L.Chen , Acta Nanking Univ .(Biol.)3(1):
18;1959 , Fl.Ill.Pl.Prim.Sin.Gram:352 (in Chinese).-Elymus hybridus (Keng)S.L .Chen , 1987 ,
Bul l.Nanjing , Bo t.Gard.Mem.Sun Yat Sen , 1987:9.-Roegneria tsukushiensis var.hybrida(Keng)L.
B.Cai , 1997 , Acta Phy to tax .Sin.35(2):166.
Type collection:China:Jiang su:“Nanking , ad declivitatem crescens , 7 V 1956 , T .H.Yu 3” .Holo-
type:N!
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
ed;90 cm tall;glabrous.Leaf sheaths glabrous.Leaf blades f lat;on upper surfaces scabrous;on low er
surfaces glabrous;marg ins glabrous.Spikes nodding o r slight ly nodding and wi th sparse remo te spikelets;
27 cm long .Rachis internodes scabrous on tw o main angles;10-17 mm long.Spikelets disposi tion bi lat-
eral i.e.normal;g reen;w ith 6-8 f lo rets;with rachilla joints minutely pubescent;rachilla joints leng th
1.5 mm long.Glumes oblong-lanceo late;unequal;scabrous on the nerves and w ith membranous margins;
fi rst glumes 6-8 mm long;with 3-5 nerves;second glumes 8-9 mm long ;w ith 5-7 nerves;t ips acute
o r rarely acute and acute and mucronate.Lemmas , at least the f irst 10-11 mm long;with back long cili-
ate on the margins , sparsely hirtellous on upper part and on bo th sides at the base , and glabrous in the
middle pa rt , and w ith callus w ith minute hai rs on tw o sides;lemma awned;lemma awn st raight o r slight ly
curved;lemma awn(20-)25-30 mm long .Palea equal to lemma and slight ly sho rter than lemma;apex
rounded-obtuse;10 -10.5 mm long ;keels ciliate on 3/4 of uppe r part;with g labrous back and w ith
w inged keels.Anthers yellow ;2 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Jiang su;on slopes.
67.R.intramongolica Sh.Chen et Gaowa
Nomenclature:R.intramomgolica Sh.Chen et Gaowua , 1979 , Acta Phy to tax .Sin.17 (4):93-94.
-Elymus intramongolicus(Sh.Chen et Goawua)S.L .Chen , 1987 , Bull.Nanjing , Bo t.G ard.Mem.Sun
Yat Sen , 1987:9.
361
　　　 四川农业大学学报 第 26 卷
Type collection:China:“Inner M ongo lia:Bogda Shan , Dong Ujimqin Qi , Xilin Gol M eng , 25 Aug.
1975 , Resources Group no.10717”(Holotype:Steppe Institute , Agricul tural Academy of Sinica).
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;100-160 cm tall;g labrous.Leaf sheaths glabrous.Leaf blades fla t;on upper surfaces
densely pubescent;on low er surfaces setulo se on the ne rves;margins g labrous.Spikes erect and w ith
dense spikelets;9-15 cm long .Rachis internodes minute ciliate on tw o main ang les;3-10 mm long.
Spikelets dispo sition bilate ral i.e.no rmal;g reen and slight ly purple;w ith 3-6 flo rets;w ith rachil la joints
densely pubescent;rachilla joints leng th 1.5-3 mm long.Glumes linear-lanceolate;unequal;densely and
minutely hi rsute and pi lose and puberulous on 1/2 ventral low er pa rt;first glumes 9-10 mm long;with 5
-7 nerves;second g lumes 10 -11 mm long;with 5-7 nerves;tips acuminate and awned , 1-5 mm.
Lemmas , at least the fir st 11-12.5 mm long;w ith back densely pubescent and wi th callus w ith minute
hai rs on tw o side s;lemma not aw ned but mucronate;lemma awn bidentate at the base;lemma awn 1-2.5
mm long .Palea sho rte r than lemma;apex obtuse;9.5-10.5 mm long;pubescent on back betw een keels.
Anthers yellow ;2-2.5 mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Inner M ongolia;on meadow and steppes.
68.R.kamczadalora Nevski
Nomenclature:R .kamczadalora Nevski , 1934 , Acta Inst.Bot.Acad.Sci.URSS.Ser.I , 2.52.-Ely-
mus trachycaulus subsp.kamczadalorum (Nevski)Tzvel., 1973 , Nov .Sist.Vyssch.Rast.10:24.-E.
kamczadalorus(Nevski)Tzvel., 1977 , Nov.Sist.Vyssch.Rast.14:245.
Type collection:Russia:Kamchatka:“Avachi basin , vi llage Koryaki 24 VII 1908 , no.1795 , V.Kom-
arov” .Ho lotype:LE!
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
ed;75-90 cm tall;scabrous below the spike s and scabrous below the nodes.Leaf sheaths sparsely sca-
brous o r scabe rulous.Leaf blades f lat;on upper surfaces sparsely pilose;on low er surfaces g labrous;mar-
gins glabrous.Spikes erect and wi th dense spikele ts;10-16 cm long.Rachis internodes glabrous.Spike-
lets dispo sition slight ly secund;g reen;with(3-)5-7 f lo re ts;with rachilla joints densely hirsute;rachil-
la joints leng th 1.5-2 mm long .Glumes lanceolate;unequal;scabrous or scaberulous and w ith membra-
nous margins;fir st glumes 9-13 mm long;with 5-7 nerves;second glumes 11-15 mm long;with 5-7
nerves;t ips acum inate and ending in a point.Lemmas , at least the f irst 10-11.5 mm long;w ith back gla-
brous , sparsely scabrous near the tip , laterals pube rulous of the base , w ith callus w i th minute hai rs on
tw o sides;lemma awned;lemma awn st raight;lemma awn 1.5-4 mm long .Palea sho rter than lemma;a-
pex truncate and emarginate;9-10.5 mm long ;keels ciliate on who le length;with g labrous back.A n-
ther s yellow;2.2-2.5 mm long.
Cytology:Chromosome number 2n=4x =28[ 46] .Genomes ?
Distribution:Russia:Kamchatka , East tern Sibiria;on riverside sand and pebbles , riverside meadow s ,
among shrubs in river valley.
69.R.kronokensis(Komar.)Tzvel
Nomenclature:R.kronokensis(Kom.)Tzvel., 1964 , Arkt Fl.SSSR 2:246.-Agropyron kronokense
Komarov , 1915 , Feddes Rep.13:87.-E lymus k ronokense (Kom.)Tzvel., 1968 , Rast.Tsentr.Azii 4:
216.-E.alaskanus subsp.kronokensis(Kom.)A.&D.Love , 1984 , Feddes Rep.95:462.
Type collection:Russia:“K rono tskii pass , dry tundra in the alpine zone , 10 V III 1909 , no .3180 , V.
362
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
Komarov” .Holo type:LE !
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
densely tuf ted;18-40 cm tall;g labrous.Leaf sheaths glabrous and w ith re tro rse hai rs on the basal ones.
Leaf blades f lat;on uppe r surfaces densely pilo se;on lowe r surfaces pilose;margins g labrous.Spikes erect
and curved or slight ly curved;4-8 cm long .Spikele ts purple;w ith 2-5 f lorets;w ith rachi lla joints setu-
lose.Glumes broadly obovate , broadly lanceolate , and assymmetrical;subequal;g labrous , scabrous on
the nerves , and w ith membranous margins;fi rst glumes(5-)7-9(-10)mm long(2-2.5 mm broad);
w ith 3-5 nerves;second g lumes(5-)7-9(-10)mm long;with 3-5 nerves;tips round and abrupt ly
narrow ed into a point.Lemmas , at least the fi rst 8-12 mm long ;w ith back g labrous and scabrous on the
nerves below the aw n;lemma aw ned;lemma awn st raight;lemma awn (2-)4-5 mm long.Palea equal
to lemma;apex obtuse;8-12 mm long;keels ci lia te on whole leng th;w ith glabrous back.Anthers
yellow;2 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Russia , Mongo lia , China , N orth America (Arctic), Arctic an on bald mountain peaks;
on stony slopes and rocks , riverside pebbles and sw ales.
70.R.kuramensis(Meld.)J.L.Yang , B.R.Baum et Yen
Nomenclature:R.kuramensis(Meld.)J.L .Yang , B.R.Baum et Yen , comb.nov.-Agropy ron kura-
mense Meld., 1960 , in Bo r , Grass.Burm.Ceyl.Ind.&Pakist:691.-Elymus kuramensis (Meld.)A.
Love , 1984 , Feddes Rep.95:454.
Type collection:Afghanistan:“Kurrum Valley , f ields near Kaiw as , Jul.1879 , J.E.T .Aitchison 709” .
Ho lotype:BM !
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
ed;30-70 cm tall;puberulent on the node s and pubescent below nodes.Leaf sheaths short setulo se and
w ith dense hai rs on the margins.Leaf blades f lat;on upper surfaces sparsely long pilo se;on low er sur-
faces glabrous;margins scabrous.Spikes erect , nodding or slight ly nodding , and wi th sparse remote
spikelets;3-9.5 cm long .Rachis internodes glabrous and scabrous on tw o main ang le s.Spikele ts disposi-
tion bila teral i.e.no rmal;g reen;w ith 3 florets;w ith rachilla joints minutely pubescent.Glumes linear-
lanceolate;unequal;scabrous on the nerves and w i th membranous margins;fi rst glumes 5-6 mm long;
w ith 1-3 nerves;second g lumes 6-8 mm long ;with 3-5 nerves;tips acuminate and acute and mucro-
nate.Lemmas , at least the f irst 6-8 mm long ;w ith back glabrous and scaberulous on upper part;lemma
awned;lemma awn straight;lemma awn(9-)10-14(-15)mm long.Palea equal to lemma;apex round-
ed-subobtuse;6-8 mm long;keels ci liate on upper part;top w ith sho rt setulo se betw een keels.Anthers
yellow;2 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Afghanistan;on cul tivated f ields.
71.R.lachnophylla Ovcz.et Sidor
Nomenclature:R.lachnophy lla Ovcz.et Sidor., 1957 , Fl.T adsch.SSR.1:505.-Agropy ron lachno-
phy l lum (Ovcz.Et Sido r.)Bondar , 1968 , Opred.Rast.Sredneaz.Azii 1:173.-Elymus dentatus subsp.
lachnophy l lus(Ovcz.Et Sido r.)Tzvel., 1973.Nov.Sist.Vyssch.Rast.10:21.
Type collection:Tadzhekistan:“Kussav li-saj , in Juniperetis stepposis ad 1500 -2600 m s.m.P.
Ovchinuikov” .Ho lotype:LE!
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
363
　　　 四川农业大学学报 第 26 卷
ed;80 cm tall;w ith appressed dense pubescence on upper part and pubescent on the nodes.Leaf sheaths
w ith dense hairs.Leaf blades f lat;on upper surfaces densely vil lose;on lower surfaces densely vi llose;
marg ins long pi lose.Spikes curved o r slight ly curved and wi th dense spikelets;15 cm long .Rachis inter-
nodes scabrous.Spikelets dispo sitio n secund;dark blue g reen;with 3-5(-7)f lorets;w ith rachi lla joints
densely pubescent.Glumes linear-lanceolate , oblique , and asymme trical;subequal;scabrous on the nerves
and w i th membranous margins;fi rst g lumes 8-16 mm long;with 3-5 nerves;second g lumes 8-16 mm
long;w ith 3-5 nerves;tips acuminate and ending in a point.Lemmas , at least the first 7-13 mm long;
w ith back densely pubescent;lemma awned;lemma awn straight and curved or slight ly curved;lemma
awn 3-5 mm long.Palea slightly shorter than lemma;apex obtuse and emarginate;6.5-12.5 mm long;keels
ciliate on whole length;with very fine setulose hairs on back between keels.Anthers yellow;2 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Tadzhekistan;on stony slopes and juniper forest steppes;alt.2500-2750 m.
72.R.laxinodis L.B.Cai
Nomenclature:R.lax inod is L.B.Cai , 1996 , Guihaia 16 (3):199-200.-E lymus la xinodis (L .B.
Cai)S.L.Chen &G.Zhu , 2002 , Novon 12(3):427.
Type collection:China:Sichuan:“Kangding , in clivis , al t.3700M , 18 Sept.1973 , Exped.Xizang
2599” .Holo type:HNWP !
Description:Perennial wi thout creeping underground rhizomes and w i th f ibrous roots.Culms tufted;
40-80 cm tal l;pubescent on the nodes and pubescent below spikes.Leaf sheaths puberulent or scabrous.
Leaf blades f lat;on upper surfaces sparsely vi llose;on lowe r surfaces g labrous and ciliate on the nerves;
marg ins g labrous.Spikes erect , curved or slight ly curved , and w ith sparse remo te spikele ts;8-11 cm
long .Rachis internodes densely puberulent on back;13-20 mm long (the low est up to 25 mm).S pikelets
dispo sition bilateral i.e.no rmal;g reen;with 2-5 f lo rets;w ith rachi lla joints puberulent;rachi lla joints
length 2-3 mm long.G lumes lanceolate;unequal;nerves and margins sparsely spinulo se;f irst glumes 3
-4 mm long;w ith 2-3 nerves;second glumes 4-5 mm long ;w ith 2-3 nerves;tips acute and pungent.
Lemmas , at least the f irst 9-10 mm long;w ith back appressed minutely pubescent;lemma awned;lemma
awn curved o r slightly curved;lemma awn 12-16 mm long .Palea shorter than lemma;apex obtuse and
truncate;keels ciliate on 1/3 of upper part;puberulent on back betw een keels.Anthers pale yellow ;2-
2.5 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Sichuan , Qinghai;on slopes;alt.3600-3700 m.
73.R.leiantha Keng
Nomenclature:R .leiantha Keng , 1963 , in Keng and S.L .Chen , A cta Nanking Univ.(Bio l.)3(1):
42;1959 , Fl.Ill.Pl.Prim.Sin.Gram:373 (in Chinese).-E lymus leianthus (Keng)S.L .Chen , 1997 ,
Novon 7(3):229.
Type collection:China:Qinghai:“ Ta-T ong Hsien , Xian-Shan , ad latus stagni tennuis crescens , al t.
2380 m , 3 VII 1945 , Hoogin 758” .Holo type:N !
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;45 cm tall;g labrous.Leaf shea ths glabrous.Leaf blades f lat o r complicate;on uppe r sur-
faces g labrous or puberulent;on low er surfaces glabrous;margins glabrous.Spikes nodding or slight ly
nodding ;12 cm long .Rachis internodes scabrous on tw o main ang les;5-8 mm long (the low est up to 13
mm long).Spikelets disposi tio n bi lateral i.e.no rmal;g reen and red-tinged;w ith 3-4 flo re ts;with rachil-
364
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
la joints minutely puberulent;rachi lla joints length 2 mm long.G lumes oblong-lanceo late;subequal;sca-
brous on the nerves;fi rst g lumes 4-7 mm long;w ith 3 nerves;second glumes 4-7 mm long;with 3-5
nerves;tips acuminate and ending in a point(1-2 mm long).Lemmas , at least the fi rst 9-10 mm long;
w ith back g labrous , scabrous on the nerves , and w ith narrow membranous margins;w ith callus glabrous;
lemma awned;lemma awn st raight;lemma awn 4-5 mm long.Palea equal to lemma and slightly sho rter
than lemma;apex obtuse and emargina te;keels ci lia te 3/4 of upper part;w ith glabrous back.Anthers
yellow;2-3 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Qinghai , beside pond;al t 2380 m.
74.R.leiotropis Keng
Nomenclature:R.lei tropis Keng , 1963 , in Keng and S.L.Chen , Acta N anking U niv.(Bio l.)3(1):
58;1959 , Fl.Ill.Pl.Prim.Sin.Gram:385(in Chinese).-Elymus leit rop is(Keng)A.Love , 1984 , Fed-
des Rep.95:449.
Type collection:China:Yunnan:“ Likiang snow range , Yang tze w ate rshed , ad o rientalem declivi tation
collis crescens , 1923-24 , J.F.Rock 10646” .Holo type:N!
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
ed;60-90 cm tall;g labrous.Leaf sheaths glabrous.Leaf blades f lat and subinvolute;on upper surfaces
scabrous;on lower surfaces g labrous;margins glabrous.Spikes curved or slightly curved , nodding or
slight ly nodding , and w ith sparse remo te spikelets;10-15 cm long.Rachis internodes scabrous;7-15
mm long .Spikelets disposi tion bilateral i.e.no rmal;g reen and purple-tinged;w ith 4-5 f lo rets;w ith ra-
chilla joints densely pubescent;rachilla joints leng th 2-2.5 mm long.Glumes oblong-lanceolate;une-
qual;g labrous and scabrous on the nerves;f irst g lumes 5-7 mm long;w ith 3-5 nerves;second g lumes 6
-8 mm long;with 3-5 ne rv es;tips acuminate.Lemmas , at least the first 10-13 mm long;with back
hirsute , margins and upper par t scaberulous , and with callus with long pubescence;lemma awned;lemma awn
divaricate or slightly divaricate;lemma awn 25-40 mm long.Palea slightly sho rter than lemma;apex truncate
and emarginate;9 mm long;keels smooth glabrous and without cilia;puberulent on back betw een keels.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Yunnan;on slopes.
75.R.lenensis M.Pop
Nomenclature:R.lenensis M.Popov , 1957 , Fl.Sredneaz.Sib.1:113.-Agropyron lenense M.Pop., 1957 ,
Bot.Mat.(Leningrad)18:3.-Elymus lenesis(M.Pop.)Tzvel., 1973 , Nov.Sist.Vyssch.Rast.10:24.
Type collection:Russia:“Irkutsk dist rict , Ust-Kutskii reg ion , Lena Basin , Kuta River near village
Kaimanova , lime stone precipice , 29 VIII 1951 , L .Bardunov” .Holotype:LE!
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms densely
tufted;30-50 cm tall;glabrous.Leaf sheaths glabrous.Leaf blades f lat;on upper surfaces g labrous;on
low er surface s g labrous;margins glabrous.Spikes erect and wi th spar se remo te spikele ts;4-6 cm long.
Rachis internodes glabrous and scabrous on tw o main ang les;3-5 mm long.Spikelets dispo sition bilateral
i.e.normal and slight ly secund;g reen;with (3-)4-5 flo re ts;w ith rachi lla joints minutely spinulo se to
w ith long brist le at the apex;rachilla joints leng th 2-2.5 mm long .Glumes narrow ly obovate;unequal;
g labrous;fi rst glumes 5 mm long;with 3 nerves;second glumes(7-)8 mm long;with 5 ne rves;tips f irst
g lume wi th a cusp , second glume awned , aw n up to 2 mm.Lemmas , at least the first 7-8 mm long;with
back glabrous and wi th callus with minute hairs on two sides;lemma awned;lemma awn straight;lemma awn(6
365
　　　 四川农业大学学报 第 26 卷
-)7-8 mm long.Palea equal to lemma and slightly shorter than lemma;apex obtuse and emarginate;7-8 mm
long;keels ciliate on 3/4 of upper part;with g labrous back.Anthers yellow;1.5-2 mm long.
Cytology:Chromosome number 2n=4x =28[ 46] .Genomes ?
Distribution:Russia:Eastern Sibi ria;on limestone outcrops , larch fo rests.
76.R.longearistata(Boiss.)Drob
76a.var.badaschanica(Tzvel.)J.L.Yang , B.R.Baum et Yen
Nomenclature:var.badaschanica (Tzvel.)J.L.Yang , B.R.Baum et Yen , comb.nov.-E lymus
longearistatus subsp.badaschanicus Tzvel., 1972 , Nov .Sist.Vyssch.Rast.9:62.
Type collection:Tadzhikistan:“ Pamir , middle course of Chechekty River , slopes , 4200 m , 27 IX
1955 , no .5601 , S.Immonniko” .Holo type:LE !.
Description:It differs f rom var.longearistata by i ts leaf blades densely pubescent on bo th surfaces;by
its lemma almost glabrous on do rsal surfaces , and palea keels ci liate on 2/3 of uppe r part.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Tadzhikistan;on mountain slopes and rocks;al t.1000-2500 m.
76b.var.f lexuosissima (Nevski)J.L.Yang , B.R.Baum et Yen
Nomenclature:var.f lexuosissima(Nevski)J.L.Yang , B.R.Baum et Yen , comb.nov.-Agropyron
f lexuosissimum Nevski , 1932 , Izv.Bo t.Sada AN SSSR.30:510.-Roegneria nevsk iana Niki t.ex Zak.,
1958 , T r.Uzb.Univ.New ser.19.nom .nud.-Elymus longearistatus subsp.f lexuossisimus(Nevski)
Tzvel., 1973 , Novo sti sist Vy ssh.Rast.10:26.
Type collection:Tadzhikistan:“Karategin , Galagem g lacie r , 10 , 000 f t.7 VIII 1896.V.Lipskii no.
2497” .Iso type:LE !
Description:It differs f rom var.longearistata by its culms g laucous;by its leaf blades on upper sur-
faces puberulent or scabrous;by its spikes f lexuous;lemma back appressed bristles on low er part o r base ,
and w ith cal lus w ith minute hai rs on tw o sides;by its palea keels ciliate on 1/3 of upper part.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Tadzhikistan , Afghanistan and Iran;on stony slopes and rocks;alt.300-3400 m.
76c.var.haussknechtii (Boiss.)J.L.Yang , B.R.Baum et Yen
Nomenclature:var.haussknecht i i (Boiss.)J.L .Yan , B.R.Baum et Yen , comb.nov .-Agropyron
longearistatum var.haussknecht i i (Boiss.)Boiss., 1884 , Fl.Or.5:660.
Type collection:Iran:“ In Persiae occidentalis mentibus Kellal , SSabsekuh , Elvend , A vroman et
Schahu in reginibus al tioribus(Haussk !)” .Holo type:G-BOIS!
Description:It dif fers f rom var.longearistata by its spikelets remote but not sparsely;and only wi th 3
-4 f lo rets(v s.7-12).
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Iran;on slopes.
76d.var.litvinovi i (Tzvel.)J.L.Yang , B.R.Baum et Yen
Nomenclature:var.li tv inov ii (Tzvel.)J.L .Yang , B.R.Baum et Yen , comb.nov.-E lymus longear-
itatus subsp.li tv i lnov ii Tavel., 1973 , Nov .Sist.Vyssch.Rast.10:26.
Type collection:Turcomania:“In cacumine m .Risarasch , ad pulcum Bir , ca 9000 in rupibus , 11 VII
1898 , no .2221 , D.Li tvinov”.Ho lotype and Iso type:LE !
366
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
Description:It differs from var.longearistata by its leaf blades on upper surfaces densely pubescent , not
short ret rorse pubescent , on low er surfaces glabrous;and by its palea keels ciliate on 1/2 of upper part.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Turcomania;on stony slopes and rocks.
76e.var.sintenisii (Meld.)J.L.Yang , B.R.Baum et Yen
Nomenclature:var.sintenisii (Meld.)J.L.Yang , B.R.Baum et Yen , comb.nov.-E lymus longeari-
tatus subsp.sintenisi i A.Meld., 1984 , N otes Roy.Bot.Gard.Edingburgh , 42(1):79.
Type collection:Turkey:“Turkey A 7 Gumusane:Kirkpaul , in declivibus;16 VII 1894 , P .Sintenis
6261” .Holo type:LD!
Description:It differs f rom var.longearistata by i ts culms pubescent below nodes;by its leaf blades
on upper surfaces densely pubescent but not shor t ret rorse pubescent , on low er surfaces glabrous or dense-
ly pubescent also not sho rt ret ro rse pubescent;by its lemma w ith minute strigil lose tow ard base and
sparsely scabrous near tip , and w ith collus wi th minute hai rs on tw o sides;and by its palea keels ciliate on
1/3 o f upper part.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Turkey , Iran;on stony slopes and rocks.
77.R.magni poda L.B.Cai
Nomenclature:R.magnipoda L .B.Cai , 1997 , Acta Phy to tax .Sin.35(2):164.-E lymus magnipo-
dus (L .B.Cai)S.L .Chen et G.Zhu , 2002 , Novon 12(3):427.
Type collection:China:Qinghai:Go lmud:“In locis g larreo sis , ad ripas rivulo rum , alt.3160 m , June
19 1969 , Exep.Aband Land 001” .Holotype:HNWP !
Description:Perennial wi thout creeping underg round rhizomes and w ithout fibrous roots.Culms soli-
tary ;20-35 cm tall;glabrous.Leaf blades invo lute;on upper surfaces glabrous o r scaberulent;on low er
surfaces glabrous;margins g labrous.Spikes erect and w ith sparse remo te spikelets;6-9 cm long.Rachis
internodes g labrous;10-20(-28)mm long.Spikelets dispo sitio n bilateral i.e.no rmal and w ith very
sho rt peduncles(1-2.5 mm long);yellow green;w ith 6-8 f lorets;w ith rachilla joints puberulent;ra-
chilla joints leng th 1.5-1.7 mm long.G lumes oblong-lanceo late;subequal;g labrous;fi rst g lumes 4.5-
7 mm long;w ith 4-7 nerves;second g lumes 4.5-7 mm long ;w ith 4-7 nerves;tips acute o r obtusius-
cule.Lemmas , at least the first 9-10 mm long;with back g labrous;lemma awned;lemma awn st raight
and curved or slight ly curved;lemma awn 9-15 mm long .Palea slight ly sho rte r than lemma and equal to
lemma;apex obtuse and truncate;keels ci liate on who le leng th;w ith glabrous back.A nthe rs black;2-3
mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Qinghai;rocks , screes and st reamsides;alt.3160 m.
78.R.microlepis(Meld.)J.L.Yang , B.R.Baum et Yen
Nomenclature:R.microlepis(Meld.)J.L.Yang , B.R.Baum et Yen , comb.nov.-Agropy rom mic-
rolepis Meld., 1960 , in Bor , G rass.Burm .Ceyl.Ind.&Pakist.692.-E lymus microlep is (Meld.)A.
Love , 1984 , Feddes Rep.95:456.
Type collection:Nepal:“betw een mugu and Parana Muga , Mugu Kho la , on open stony slopes , 13 ,000
f t.20/8 , 1952 , O.Polunin , W.R.Syke s and L.H .J.Williams 5325” .Ho lotype:MB !
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
367
　　　 四川农业大学学报 第 26 卷
ed;50-60 cm tall;glabrous.Leaf sheaths glabrous.Leaf blades fla t;on upper surfaces sparsely villose
on nerves;on lower surfaces glabrous;margins g labrous.Spikes nodding o r slightly nodding and w ith
sparse remo te spikelets;10-15 cm long.Rachis inte rnodes scabrous on tw o main angles.Spikele ts dispo-
sit ion bi lateral i.e.normal;g reenish purple;w ith 4-5(-6)f lo re ts;w ith rachi lla joints minutely pubes-
cent;rachilla joints leng th 2.5-3 mm long.Glumes linear-lanceolate;subequal;scabrous on the nerves;
fi rst g lumes 2.5-3 mm long;w ith 1-3 nerves;second g lumes 3.5-4.5 mm long;with 1-3 nerves;tips
acute.Lemmas , at least the first 8 mm long ;w ith back scabrous o r scaberulous;lemma awned;lemma
awn straight and curved or slight ly curved;lemma awn 12-20 mm long.Palea subequal to lemma;apex
obtuse and truncate;keels ciliate on upper part;se tulous on uppe r part of back betw een keels.Anthers
purple;1.5-2 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Nepal;on open stony slopes;alt.3962 m.
79.R.minor Keng
Nomenclature:R.minor Keng , 1963 , in Keng and S.L .Chen , Acta Nanking Univ.(Biol.)3(1):71;
1959 , Fl.Il l.Pl.Prim.Sin.Gram:397(in Chinese).-E lymus minus(Keng)A.Love , 1984 , Feddes Rep.
95:458.
Type collection:China:Hebei:“Neikiu Hsien , ad declivi teni crescens , al t.1600 m , 3 VII 1950 , Y.Li-
ou 1298” .Ho lotype:NAS!
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms loo sely
tufted;25-30 cm tall;g labrous.Leaf sheaths glabrous.Leaf blades subinvo lute o r complicate;on upper
surfaces densely pubescent;on low er surfaces sparsely pubescent;margins g labrous.Spike s e rect and w ith
sparse remote spikelets;8-9 cm long.Rachis internodes scabrous on tw o main angles;7-14 mm long.
Spikelets disposi tion bi lateral i.e.no rmal;g reen;w ith 2-5 f lorets;w ith rachi lla joints puberulent;rachil-
la joints leng th 1-1.5 mm long .Glumes oblong-lanceola te;unequal;scabrous on the nerves;fir st glumes
5-7 mm long;w ith 5 nerves;second glumes 6-8 mm long ;with 6 ne rve s;tips acute and 1-too thed.
Lemmas , a t least the first 8.5 mm long ;w ith back appressed minutely pubescent and w ith callus w ith mi-
nute hai rs;lemma awned;lemma awn div aricate or slightly divaricate;lemma awn 12 mm long .Palea e-
qual to lemma;apex rounded-subobtuse;8.5 mm long;keels ciliate on 1/2 o f upper part;pube rulent be-
tween keels at top.A nthe rs y ellow ;1.5 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Hebei , Inner Mongolia , Shanx i , Gansu;on grassy slopes;alt.1400-1600 m.
80.R.nepalensis(Meld.)J.L.Yang , B.R.Baum et Yen
Nomenclature:R.nepalensis (Meld.)J.L.Yang , Baum et Yen comb.nov.-Agropy ron nepalense
Meld., 1960 , in Bo r , Grass.Burm.Cey l.&Pakist.692.-E lymus nepalensis (Meld.)A.Love , 1984 ,
Feddes Rep.95:460.
Type collection:Nepal:“Lumsa , N.W.of Jum la , open slopes , 9500 f t.10/8 , 1952 , O.Polunin , W.
R.Syke s and L.H .Williams 5111” .Holo type:MB!
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
ed;60-70 cm tall;puberulent o r scabrous below the spikes and densely puberulo se on and below the
nodes.Leaf shea ths cove red w ith shor t hairs on lowe r part and glabrous on upper part.Leaf blades fla t;
on upper surfaces sparsely vi llose on nerves;on lowe r surfaces glabrous;margins glabrous.Spikes erect
and w ith sparse remo te spikelets;6-12 cm long.Rachis internodes densely shor t setulose and scabrous on
368
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
tw o main angles.Spikelets disposit ion bi lateral i.e.no rmal;g reen and slightly purple;w ith 3-5 f lorets;
w ith rachilla joints minutely pubescent.Glumes linear-lanceolate;unequal;scabrous on the nerves and
w ith membranous marg ins;first glumes 4.5-5 mm long;w ith 3-5(-6)nerves;second g lumes 5.5-8
mm long ;w ith 3-5(-6)nerves;tips acuminate or acute.Lemmas , at least the fi rst 8-9 mm long ;w ith
back hirsute;lemma awned;lemma awn st raight;lemma awn 10-20 mm long.Palea subequal to lemma
and rarely slightly longer than lemma;apex truncate and emarginate;keels ciliate on upper part;w ith hir-
sute back.Anthers yellow and purple;2-2.5 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Nepale;on open slopes;alt.ca.2700 m.
81.R.nudiuscula L.B.Cai
Nomenclature:R.nud iuscula L .B.Cai , 1997 , A cta Phy to tax .Sin.35(2):171.
Type collection:China:Xinjiang:“Nikeke , ad ripas f luviorum , al t.1650 m , July 6 , 1976 , Exped Xin-
jing 1746” .Holo type:XJBI !
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms loo sely
tufted;75-115 cm tall;scabe rulous.Leaf sheaths glabrous and densely ret ro rse vi llose on the low er par t.
Leaf blades f lat;on upper surfaces scabrous o r scaberulous;on low er surfaces glabrous;marg ins gla-
brous.Spikes erect , curved or slightly curved , and w ith sparse remo te spikelets;10-19 cm long.Rachis
internodes scabrous and spinulo se on tw o main angles;11-17 mm long (the low est up to 30 mm).Spike-
lets disposit ion bi lateral i.e.no rmal;purple;w ith 4-5 flo rets;w ith rachilla joints puberulent;rachilla
joints leng th 1.5 mm long.G lumes linear-lanceo late;subequal;scabrous on the ne rv es w ith membranous
marg ins;first glumes 10-15 mm long;w ith 6-9 nerves;second g lumes 10-15 mm long ;w ith 6-9
nerves;tips pungent.Lemmas , at least the fi rst 11-12 mm long;w ith back densely pubescent and w ith
cal lus beset wi th fairly densely pilo se pubescence;lemma awned;lemma awn st raight;lemma aw n 3-8
mm long .Palea sho rter than lemma;apex t runcate and emarginate;10 mm long;keels ciliate on upper
part;pubescent on back betw een keels.Anthers yellow;5 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Xinjiang;riverdise s;al t.1650-2000 m.
82.R.pendulina Nevski
82a.var.brachypodioides(Nevski)J.L.Yang , B.R.Baum et Yen
Nomenclature:var.brachypodioides(Nevski)J.L.Yang , B.R.Baum et Yen , comb.nov.-Roegne-
ria brachypodioides Nevski , 1934 , Fl.SSSR , 2:617.-Agropy ron brachypodioides (Nevski)Serg .,
1961 , in Kryl., Fl.Zap.Sib.12:3128.-Elymus pendul inus subsp.brachypodioides(Nevski)Tzvel.,
1972 , Nov.Sist.Vyssch.Rast.9:60.-E lymus brachypodioides (Nevski)Peschk., 1972 , in S tepn.Fl.
Bayk.Sib.45.-Agropy ron vericosum Nevski ex Grub.1955 , Bo t.Mat.(Lening rad), 17:6.
Type collection:Russia:“M inusinsk reg ion , near village Po tro shilovo , Nizhny Island on Enisei , f loo-
ded meadow , 9 VIII 1931 , M .Ilin #24” .Holo type:LE !
Description:It differs f rom var.pendulina by its culms pubescent on the nodes , rarely glabrous;by
its spikes 6-12 cm long(v s.15-23 mm long), and lemma back scaberulous on upper part and wi th sho rt
ci liate along the margins.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Dist ribution:Russia , Mongo lia;f looded meadow s , fo rest g lades , pebbles.
369
　　　 四川农业大学学报 第 26 卷
82b.var.pubinodis Keng
Nomenclature:var.pubinodis Keng , 1963 , in Keng and S.L .Chen , Acta Nanking U niv.(Biol.)3
(1):28.1959 , Fl.Ill.Pl.Prim.Sin.G ram :364(in Chinese).-R.pendulina Nevski f.pubinodis(Keng)
M .Kitag aw a , 1979 , Neo-Linean.Fl.Manshur:109.
Type collection:China:“ Liaonong , Chien-shan-nam-kow , ad latus viae , alt.100 m , 29 V 1950 , T .N.
Liou et al., 565” .Holotype:PE!
Description:I t dif fer s f rom va r.pend ulina by its nodes wi th dense ret ro rse hairs , and low er leaf
sheaths alw ays pubescent.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Lioaning ;roadsides;alt.100 m .
83.R.platyphy lla Keng et S.L.Chen
Nomenclature:R.platyphy l la Keng , 1963 , in Keng and S.L .Chen , A cta Nanking Univ.(Biol.)3
(1):35.1959 , Fl.Ill.Pl.Prim.Sin.G ram :370(in Chinese).-E lymus platyphy l lus (Keng)A.Love ,
1984 , Feddes Rep.95:456.
Type collection:China:Xinjiang:“Sha 16” .Holo type:PE!
Description:Perennial w i thout creeping underground rhizomes and w ithot fibrous roots.Culms lo ose-
ly tuf ted;110 cm tall;g labrous.Leaf sheaths glabrous.Leaf blades flat;on upper surface s w ith sparsely
pi lose on nerves;on low er surfaces g labrous and scabrous on nerves;marg ins glabrous.Spikes erect and
w ith sparse remote spikelets;13 cm long.Rachis inte rnodes minute ci liate on two main ang les;6-13 mm
long.Spikelets disposi tion slight ly secund;g reen;w ith 6-7 flo rets;w ith rachilla joints minutely pubes-
cent;rachilla joints leng th 2 mm long.Glumes lanceolate;unequal;scabrous on the ne rves and hispidu-
lous on nerves;first g lumes 12 mm long ;with 5-7 nerves;second glumes 14-15 mm long ;with 5-7
nerves;tips acuminate and ending in a point(0.5-2 mm long).Lemmas , at least the first 12 mm long;
w ith back pubescent and w ith callus w ith minute hai rs and longe r hairs on tw o sides (0.6 mm);lemma
awned;lemma awn st raight o r slight ly curved;lemma awn 7-14 mm long.Palea equal to lemma;apex
t runcate and emarginate;12 mm long;keels ciliate on 3/4 of upper part;puberulent on back betw een
keels.A nthers y ellow ;3 mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Xinjiang;on stony slopes , fo rest glades;al t.1100-2100 m.
84.R.prokudinii Sered
Nomenclature:R.prokudini i Sered., 1965 , Nov.Sist.Vyssch.Rast.2:55.-E lymus prokudini i
(Sered.)Tzvel., 1972 , Nov.Sist.Vyssch.Rast.9:61.-E.uralensis subsp.prokudini i (Sered.)Tz-
vel.,1973 , Nov.Sist.Vyssch.Rast.10:22.
Type collection:Russia:“Dagehestan , dist r.Kurach , supra pag .Kokaz , in declivita te septent rionali ,
in altiherbosis , subalpinis , 31 VII 1940 , R.Elenev skii” .Ho lotype:LE!
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;100 cm tal l;glabrous.Leaf sheaths g labrous.Leaf blade s flat;on uppe r surfaces pilose;on
low er surfaces scabrous;margins pilose.Spikes erect , nodding or slight ly nodding , and w ith sparse re-
mo te spikelets;8-12 cm long.Rachis internodes scabrous on tw o main angles.Spikelets dispo si tio n bi lat-
eral i.e.normal;g reen;with (2-)3-4 flo rets.G lumes lanceo late;unequal;minute pubescent and sca-
brous on uppe r par t and w ith membranous ma rg ins;fi rst glumes (6-)8-8.5 mm long;with 3 nerves;
second g lumes 7-9 mm long ;with 5 nerves;t ips first g lume acuminate to a 1 mm long awn , second g lume
370
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
acute abrupt to a 3 mm long awn.Lemmas , at least the fi rst 9-13 mm long ;with back pilose on upper
part;lemma awned;lemma awn slight ly curved and bidentate at the base;lemma awn 20 mm long.Palea
slight ly shorter than lemma;apex subobtuse and bidenticulate;keels ciliate on whole leng th;w ith gla-
brous back.Anthers yellow ;2.3-3 mm long.
Cytology:Chromosome number 2n=4x =28[ 46] .Genomes ?
Distribution:Russia:G reat Caucasus;on subalpine meadow s;forest glades , birch groves.
85.R.puberula Keng
Nomenclature:R.puberula Keng , 1963 , in Keng and S.L.Chen , Acta Nanking Univ.(Biol.)3(1):
20.1959 , Fl.Ill.Pl.Prim .Sin.Gram:354(in Chinese).-E lymus puberulus(Keng)A.Love , 1984 , Fed-
des Rep.95:453.
Type collection:China:“Sichuan:Nanchuan Hsien , Y.Y.Ho 5080” .Ho lotype:PE !
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;60 cm tall;g labrous.Leaf shea ths glabrous and puberulent on the basal ones.Leaf blades
f lat;on upper surface s puberulent;on low er surfaces g labrous.Spikes slight ly curved and w ith sparse re-
mo te spikelets;8-11 cm long .Rachis internodes scabrous on tw o main ang le s;10 mm long (the low est
up to 12-16 mm).Spikelets disposi tion bi lateral i.e.no rmal and wi th very short peduncles(0.5-0.7 mm
long);green;with 2-3 flo re ts;with rachilla joints puberulent;rachilla joints leng th 2-2.5 mm long.
Glumes oblong-lanceolate;unequal;g labrous;f irst g lumes 4.5-6 mm long;w ith 3-4(-5)nerves;sec-
ond glumes 5.5-7 mm long ;with 5 nerves;t ips acute or rarely acute and acuminate.Lemmas , at least
the fi rst 8.5-9 mm long;w ith back glabrous o r scaberulous , and w ith callus w ith minute hair s;lemma
awned;lemma awn st raight;lemma awn 17-23 mm long.Palea slight ly sho rte r than lemma;apex obtuse
and emargina te;keels nearly smoo th o r minute ciliate at the t ip;w ith glabrous back.Anthers yellow ;1.4
mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Sichuan , Yunnan;ro adsides;al t.2000-2900 m.
86.R.pubicaulis Keng
Nomenclature:R.pubicaul is Keng , 1963 , in Keng and S.L.Chen , Acta Nanking Univ.(Biol.)3
(1):30.1959 , Fl.Ill.Pl.Prim.Sin.Gram:366 (in Chinese).-Elymus pendulinus subsp.pubicaulis
(Keng)A.Love , 1984 , Feddes Rep.95:459.
Type collection:China:Gansu:“Hsiaoho Xian , Qinghui , in himidis crescens , alt.2400 m , 3 VII
1937 , K.T .Fu 1916” .Ho lotype:NAS!
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms loo sely
tufted;60-90 cm tall;w ith dense re tro rse pubescence and w ith dense ret ro rse pubescence on the nodes.
Leaf sheaths sparsely re tro rse pubescent on the upper part and densely ret rorse pubescent on low er par t.
Leaf blades f lat;scabrous on bo th surfaces.Spikes nodding;12-15 cm long .Rachis internodes scabrous
on tw o main angles and hirsute on nodes;15-20 mm long (the low est up to 30 mm).Spikelets dispo sitio n
bilateral i.e.no rmal;green and purple-t ing ed;w ith 4-5 flo rets;w ith rachilla joints densely pubescent;
rachilla joints leng th 2 mm long .Glumes oblong-lanceo late;unequal;scabrous on the nerves;first glumes
7-8 mm long;with 5 nerves;second g lumes 8-9 mm long;with 5-7 nerves;tips acute and mucronate.
Lemmas , at least the fi rst 9 mm long ;w ith back scabrous o r scaberulous , with ciliate upper margins , and
w ith callus wi th minute hair s on tw o sides(0.5 mm);lemma awned;lemma awn straight and o r slight ly
curved;lemma awn 20-30 mm long .Palea equal to lemma;apex obtuse and emarginate;9 mm long;
371
　　　 四川农业大学学报 第 26 卷
keels ci lia te on 3/4 of upper part;setulouse on upper part of back between keels.Anthers yellow;3 mm
long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Gansu , Sichuan;humid roadsides;1lt 200-2400 m.
87.R.pulanensis H.L.Yang
Nomenclature:R.pulanensis H .L .Yang , 1980 , Acta Phy totax.Sin.18(2):253.-Elymus pulanen-
sis(H .L.Yang)S.L .Chen , 1987 , Bull.N anjing Bot.Gard.Mem .Sun Yat Sen 1987:9.-Roegneria jac-
quemont i i (Hook.f.)Ovcz.&Sido r.var.pulanensis(H.L.Yang)L .B.Cai , 1997 , Acta Phy to tax .Sin.35
(2):169.
Type collection:China:Xizang :“Pulan , alt.3600 m , VII 16 , 1976 , Qinghai-Xizang Exped.76 -
8466” .Holo type:NWRI !
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;30-50 cm tall;g labrous.Leaf sheaths glabrous.Leaf blades flat and scabrous;on upper
surfaces glabrous and scaberulous;on lowe r surfaces g labrous and spar sely vil lose on the nerves;margins
g labrous.Spikes curved or slightly curved and wi th sparse remo te spikele ts;8-10 cm long .Rachis inter-
nodes glabrous;14-20 mm long.Spikele ts dispo sitio n bilate ral i.e.no rmal;g reen;w ith 7-9 f lorets.
Glumes oblong-lanceolate;unequal;g labrous and wi th membranous margins;f irst g lumes 4.5 -5 mm
long;w ith 3-5 nerves;second glumes 5-7 mm long;w ith 3-5 nerves;tips aw ned , 1-5 mm (-7).
Lemmas , at least the fir st 11 mm long;w ith back g labrous and spa rsely hispid;lemma awned;lemma awn
div aricate o r slightly divaricate;lemma awn 30-40 mm long .Palea equal to lemma and rarely slight ly lon-
ger than lemma;apex obtuse;11 mm long ;keels ci liate on 1/2 of upper part;with glabrous back.Anthers
yellow;5 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Xizang;f looded meadow s;al t.3600 m .
88.R.purpurascens Keng
Nomenclature:R .p urpuracens Keng , 1963 , in Keng and S.L .Chen , A cta Nanking Univ.(Biol.)3
(1):56;1959 , Fl.Ill.Pl.Prim .Sin.G ram :383 (in Chinese).-Elymus purpurascens (Keng)A.Love ,
1984 , Feddes Rep.95:448.
Type collection:China:Gansu:“Lund-te , Luh-pan Shan , ad declivitatem collis crescens , 18 VII 1942 ,
T .P.Wang 13213”.Ho lotype:N!
Description:Perennial wi thout creeping underg round rhizomes and wi th f ibrous ro ots.Culms solitary
and loosely tufted;60-90 cm tall;g labrous.Leaf sheaths g labrous.Leaf blades involute;on upper sur-
faces pubescent;on lower surfaces g labrous;margins scabrous.S pikes nodding o r slight ly nodding and
w ith sparse remote spikelets;13-15 cm long.Rachis internodes scabrous o r minute ciliate on two main
angles;10-20(-23)mm long.Spikelets dispo sitio n bilateral i.e.no rmal;slight ly purple;w ith 4-7 f lo-
rets;with rachi lla joints puberulent;rachilla joints length 2 mm long .Glumes oblong-lanceolate;sube-
qual;scabrous or scaberulous;f irst glumes 5-8 mm long;with 3 nerves;second g lumes 5-8 mm long;
w ith 5 nerves;t ips acute.Lemmas , at least the f irst 9-11 mm long ;with back scabrous o r sparsely his-
pid , and w ith callus wi th minute hairs on tw o sides;lemma awned;lemma awn curved;lemma awn 18-28
mm long .Palea subequal to lemma;apex obtuse;9-10 mm long;keels ciliate on 1/3 o f upper part;pu-
berulent on back be tw een keels.
Cytology:Chromosome number 2n=?Genomes ?
372
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
Distribution:China:Gansu;on slopes;alt.2200-2800 m.
89.R.scabridula(Ohwi)Meld.
Nomenclature:R.scabridula(Ohwi)Meld., 1949 , in Norlindh., Fl.Mong.122.-Agrop yron sca-
brid ulum Ohw i , 1943 , J.Jap.Bot.19:166.-Elymus scabridulus (Ohw i)Tzvel., 1968 , Rast Tsentr.
Azii 4:218.-E.semicostatus subsp.scabridulus(Ohwi)A.Love , 1984 , Feddes Rep.95:454.
Type collection:China:Inner M ongolia:“ Ulanchabu-Mon , Fushen-Chuang , T .Kanashiro , no.
3841” .Holo type:KYO !
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
ed;50-60 cm tall;glabrous , with st ripes , and wi th pubescent on nodes.Leaf sheaths g labrous and w ith
ret ror se hai rs on the basal ones.Leaf blades invo lute;on upper surfaces scaberulous;on low er surfaces
scaberulous;margins g labrous.Spikes erect and w ith dense spikelets;8-10 cm long.Rachis internodes
scabrous on tw o main angles.Spikele ts disposi tion slightly secund;g reen;w ith 5-6 flo rets;w ith rachilla
joints scaberulous.Glumes lanceolate;unequal;scabrous o r scaberulous and w ith membranous margins;
fi rst g lumes 9-10 mm long ;with 3-4 nerves;second glumes 11-12 mm long;w ith 3-4(-5)nerves;
t ips acuminate , cusp , and 1-too thed.Lemmas , at least the f irst 7-8 mm long;w ith back scabrous or
scaberulous;lemma awned;lemma awn st raight or slight ly curved;lemma awn 12-15 mm long.Palea e-
qual to lemma;apex obtuse;7-8 mm long ;keels ciliate on uppe r par t;glabrous on back betw een keels.
Anthers yellow ;1.5 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Inner M ongolia.
90.R.sclerophyl la Nevski
Nomenclature:R.sclerophy l la Nevski , 1934 , A cta Inst.Bo t.Acad.Sc.URSS ser.I , 2.49.-Agro-
p yron t ianschanicum Drob., 1925 , Feddes Rep.21:42 pro par te.-Semeiostachy s sclerophy lla (Nevski)
Drob., 1941 , Fl.Uzbek.1:281.-Elymus sclerophy llus (Nevski)Tzvel., 1972 , Nov .Sist.Vyssch.
Rast.9:59.-Agropy ron transnom inatum Bondar , 1968 ,Opred.Rast.Seredneaz Azii 1:172.-Agrop y-
ron dolicholepis Meld., 1970 , in Reich.F ., Fl.Iranica 70:180.
Type collection:Tadzhikistan:“In g lareo sis f lum.Revnou , Darvaz Occidentali s , Gontscharov et al.,
1932 , no .962.” .Ho lotype:LE!
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms densely
tufted;70-105 cm tal l;glabrous.Leaf sheaths glabrous.Leaf blades f lat;on upper surfaces scabrous ,
g labrous , and glaucous;on low er surfaces glabrous;margins g labrous.Spike s erect and wi th dense spike-
lets;11-20 cm long.Rachis internodes scabrous on tw o main ang les;6-10 mm long .Spikelets disposi-
tion bila teral i.e.normal;greenish purple;w ith 5 flo rets;w ith rachil la joints puberulent;rachilla joints
length 2-2.5 mm long.Glumes bro adly lanceo late and co riaceous;unequal;scabrous o r scaberulous and
scabrous on the nerves;f irst g lumes 11-13 mm long;with 7 nerves;second glumes 12-15 mm long;
w ith 7-9 nerves;tips acuminate and ending in a point , aw ned , 1-5 mm , and 1-too thed.Lemmas , at
least the fi rst 10-12 mm long ;w ith back scabrous or scaberulous , sparsely o r densely setulo se , and w ith
cal lus w ith minute hairs and longer hairs on tw o sides;lemma awned;lemma awn st raight o r slight ly
curved , and bidentate at the base;lemma awn 12-20 mm long .Palea equal to lemma;apex obtuse;10-
12 mm long ;keels ciliate on 3/4 of upper part;w ith g labrous back.Anthers pale yellow ;3 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Tadzhikistan:southw est Pamir , no rthw est Iran.;on stony slopes.Pebbles , forest
373
　　　 四川农业大学学报 第 26 卷
g lades , among shrubs.
91.R.semicostata(Nees ex Steud.)Kitag
91a.var.striata(Ness ex Steud.)L.J.Yang , B.R.Baum et Yen
Nomenclature:var.striata(Nees ex Steud.)J.L.Yang , B.R.Baum et Yen , comb.nov.-Triticum stria-
tum Nees ex Steud., 1854 , Syn.Pl.Glum.1:346.-Roegneria striata (Steud.)Nevski , Acta Univ.As.Med.
Ser 8B.17:71.-Elymus semicostatus subsp.striatus(Steud.)A.Love , 1984 , Feddes Rep.95:454.
Type collection:Nepal:“N.W.Himalaya , Royel 377” .Holo type:K!
Description:It dif fers f rom var.semicostata by i ts spikelets more approximate o r contracted on rachis;
g lumes linear-oblong o r oblong-lanceo late , the fi rst g lume nearly as long as the first f loret , acuminate;
lemma back w ith scattered very sho rt appressed hai rs on the w ho le back;lemma awn 15-20 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Nepal , Pakistan , Afghanistan , India;on stony slopes;alt.2400-3700 m.
91b.var.thomsoni i(Hook.f.)J.L.Yang , B.R.Baum et Yen
Nomenclature:var.thomsoni i (Hook.f.)J.L.Yang , B.R.Baum et Yen , stat.nov.-Agropyron
sem icostatum var.thomsoni i Hook.f., 1896 , Fl.Brit.Ind 7:369.-Elymus semicostatus subsp.thomsoni i
(Hook.f.)A.Love , 1984 , Feddes Rep.95:453.-Elymus semicostaus var.thomsonii (Hook.f.)G.
Singh , 1986 , J.Econ.Taxon.Bot.8(2):498.
Type collection:India:“Kunawur , al t.11-12000 f t.Thomson” .Holo type:K!
Description:It differs f rom var.semicostata by its leaf sheaths and leaf blades w ith densely vi llose.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:India;on stony slopes , forest g lades;alt.3350-3650 m .
92.R.serot ina Keng
Nomenclature:R.serotina Keng , 1963 , in Keng and S.L.Chen , Acta N anking Univ.(Bio l.)3(1):
50;1959 , Fl.Ill.Pl.Prim .Sin.Gram:379 (in Chinese).-Elymus serot inus (Keng)A.Love , 1984 , Fed-
des Rep.95:467.
Type collection:China:Shaanxi:“ Tai-pai-shan , ad ping-an-sze vicinium , 7 IX 1937 , T .N.Liou &P.
C.Tsoong no.693” .Holotype:PE!
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
ed;25-45(-70)cm tall;g labrous and sparsely scabrous below spikes.Leaf sheaths sparsely pilose on
upper part and margins ciliate on basal ones.Leaf blade s invo lute or subinvolute;on upper surface s gla-
brous or scaberulous;on low er surfaces glabrous and scabe rulous;margins glabrous.Spikes nodding or
slight ly nodding and wi th spar se remo te spikele ts;6-10 cm long ;5-7 mm w ide.Rachis internodes gla-
brous and scabrous on two main ang les;7-15 mm long .Spikelets disposit ion bi lateral i.e.no rmal and
w ith very short peduncles(0.5 mm);yel lowish brow n and purple-tinged;with 3-6(-7)f lorets;w ith ra-
chilla joints puberulent;rachilla joints leng th 1.7-2.2 mm long.G lumes oblong-lanceolate;unequal;sca-
brous or scaberulous , pubescent , and scabrous on the nerves;first g lumes 5-7.5 mm long ;w ith(3-)4
-5 ne rve s;second glumes 7-9 mm long ;with(3-)5-7 nerves;tips acuminate or acute and mucronate.
Lemmas , at least the f irst 8-10 mm long ;w ith back hispid on upper part , and lateral puberulous o f the
base , and w ith callus wi th minute hairs on tw o sides;lemma awned;lemma awn curved o r slightly curved;
lemma awn 15-30 mm long.Palea slight ly sho rter than lemma and equal to lemma;apex obtuse and trun-
cate;7-9.5 mm long ;keels ciliate on 1/3 of upper part;w ith g labrous back.Anther s yellow;1.5-2.1
374
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Shaanxi , Qinghai;on stony g rassland , mountain slopes and valley ;alt.2800-
3200 m.
93.R.serpentina L.B.Cai
Nomenclature:R .serpentina L.B.Cai , 1997 , Acta Phy toax .Sin.35(2):167.-Elymus serpentines
(L.B.Cai)S.L.Chen e t G.Zhu , 2002 , Novon 12 (3):427.
Type collection:China:Hebei:“Yuxian , inripis rivulorum , al t.2010 m , July 10 , 1959 , Exped.
Shanxi Team 10147” .Holo type:HNWP !
Description:Perennial wi thout creeping underg round rhizomes and wi th f ibrous ro ots.Culms solitary
and loosely tufted;40-60 cm tal l;glabrous.Leaf sheaths g labrous.Leaf blades flat;on upper surfaces
sparsely villo se;on low er surfaces glabrous;margins g labrous.Spikes nodding or slightly nodding and
w ith sparse remote spikelets;7-11 cm long.Rachis internodes scabrous and scabrous on tw o main an-
gles;7-12 mm long.Spikelets dispo sitio n bi lateral i.e.normal;g reen;w ith 4-6 flo rets;w ith rachilla
joints puberulent.Glumes oblong-lanceolate;unequal;scabrous on the nerves and w ith membranous mar-
gins;fi rst g lumes 5-6 mm long ;w ith 4-5 nerves;second g lumes 6-7 mm long;with 4-5 nerves;tips
fi rst glume w ith 3-4 mm long awn , second glume w ith a 4-6 mm long awn , 1-too thed , and wi th 2-3
tee th.Lemmas , at least the first 9-10 mm long;w ith back glabrous , scabrous on the nerves , and w ith
cal lus w ith minute hairs and longe r hairs on tw o sides;lemma awned;lemma aw n curved or slight ly
curved;lemma awn 14-18 mm long.Palea sho rte r than lemma;apex emarginate;keels ci lia te on 1/2-2/
3 of upper part;puberulent on back between keels.Anthers yellow;3 mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Hebei;on riversides;alt.2010 m.
94.R.shouliangiae L.B.Cai
Nomenclature:R.shouliangiae L .B.Cai , 1997 , A cta Phytotax.Sin.35(2):161.Elymus shoul iang i-
ae (L .B.Cai)G.Zhu , 2002 , Novon 12(3):427.
Type collection:China:Xizang:Gyrong :“In g lares riparum , al t.2800 m , July 6 1975 , C.Y.Wu et
al.678” .Ho lotype:PE !
Description:Perennial w ithout creeping underground rhizomes and w ith fibrous roo ts.Culms solitary ;
60-70 cm tall;scaberulous.Leaf sheaths glabrous.Leaf blades flat;on upper surfaces g labrous or scabe-
rulous;on low er surfaces g labrous;margins g labrous.Spikes flexuous or slightly flexuous and w ith sparse
remo te spikelets;6-19 cm long.Rachis internodes scabrous o r spinulo se on tw o main angle;15-23 mm
long .Spikele ts disposi tion bi lateral i.e.no rmal;g reen;w ith 8-10 f lorets;w ith rachi lla joints densely pu-
berulous.Glumes lanceolate;unequal;g labrous;fi rst g lumes 7-8 mm long;w ith 3-4 nerves;second
g lumes 8-9 mm long;w ith 5-7 nerves;tips first glume acuminate and awnless , second glume wi th 2-5
mm long awn.Lemmas , at least the fi rst 11-12 mm long;w ith back glabrous;lemma awned;lemma awn
curved or slightly curved;lemma awn 35-40 mm long.Palea subequal to lemma;apex t runcate;with gla-
brous back.Anthers red-brow n;4-5 mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Xizang;among stones beside river;al t 2800 m.
95.R.sikkimensis(Meld.)J.L.Yang , B.R.Baum et Yen
375
　　　 四川农业大学学报 第 26 卷
Nomenclature:R.sikkimensis(Meld.)J.L .Yang , B.R.Baum et Yen , comb.nov .-Agropy ron sik-
k imense Meld., 1960 , in Bo r , Grass.Burm.Cey l.Ind.&Pakist.694.-E lymus sikkimensis(Meld.)A.
Love , 1984 , Feddes Rep.95:460.
Type collection:Sikkim:“Lachen , reg , temp., 9000-10000 f t.2/8 1849 , J.D.Hooker”.Holotype:K!
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
ed;70-80 cm tall;g labrous or scabrous below the spikes.Leaf sheaths g labrous.Leaf blades flat;on up-
per surfaces scaberulous;on low er surfaces glabrous;margins glabrous.Spikes erect , or slight ly nodding
, and wi th sparse remote spikele ts;10-18 cm long .Rachis internodes g labrous and scabrous on tw o main
angles.Spikele ts dispo sitio n bilateral i.e.no rmal;g reen;with 3-6 f lo rets;with rachilla joints hi rsute.
Glumes linear-lanceo late;unequal;g labrous , scabrous on the nerves , and w ith membranous margins;f irst
g lumes 5-7.5 mm long;w ith 3-5 nerves;second g lumes 6-8.5 mm long;w ith 3-5 nerves;t ips acute.
Lemmas , at least the f irst 9-10 mm long;w ith back glabrous and scabrous on the upper part;lemma
awned;lemma aw n st raight;lemma awn 15-22 mm long.Palea equal to lemma;apex emarginate;keels
of the palea of ten prolonged into a very sho rt aw n-like appendage;w ith ve ry fine setulo se hairs on back be-
tween keels.A nthe rs y el low ;2 mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Sikkim ;alt.2700-3100 m.
96.R.sinica Keng
Nomenclature:R.sinica Keng , 1963 , in Keng and S.L .Chen , Acta Nanking Univ.(Biol.)3(1):33;
1959 , Fl.Ill.Pl.Prim.Sin.Gram:367(in Chinese).-Elymus sinicus(Keng)S.L .Chen , 1997 , Novon 7
(3):229.
Type collection:China:Qinghai:“His-ning Xian , prope Hsu-chin-chai , in it inere a Ta Er Ssu (Kum-
bum)ad urben H is-ning , in solarie arido secundum viam legitur , 19 VII 1944 , Y.L.Keng &P.C.Keng
5505” .Holo type:N!
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;60-90 cm tal l;glabrous.Leaf sheaths g labrous.Leaf blades involute;on upper surfaces
sparsely pi lose;on low er surfaces glabrous;margins g labrous.Spikes erect and wi th sparse remote spike-
lets;8-10 cm long.Rachis internodes scabrous o r minute ciliate on tw o main ang les;6-15 mm long.
Spikelets dispo sition bila teral i.e.normal;g reen;w ith 4-5 f lo rets;w ith rachil la joints minutely pube ru-
lent;rachilla joints leng th 1.5-2 mm long .Glumes oblong-lanceolate and asymmetrical;unequal;sca-
brous on ne rves;first glumes 7-8 mm long;with 3-5 nerves;second g lumes 8-10 mm long ;w ith 3-5
nerves;tips acuminate.Lemmas , at least the first 9 mm long;with back minutely pube rulent , scabrous
on the nerves , with callus w ith minute hairs , and w ith long cal lus hairs laterally (0.4 mm long);lemma
awned;lemma awn st raight o r slightly curved;lemma awn 10-15 mm long.Palea subequal to lemma;a-
pex t runcate and slightly emarginate;9 mm long;keels ciliate on 1/2 of upper part;puberulent betw een
keels at top.A nthers pale yellow and pale red;1.5-2 mm long.
Cytology:Chromosome number 2n=4x =28.Genome ?
Distribution:China:Qinghai , Gansu , Shanx i , Shaanxi , Hebei , Sichuan;on slopes.Forest g lades;
alt.1400-4340.
96a.var.angust i f olia C.P.Wang et H.L.Yang
Nomenclatue:R.sinica Keng var.angust i folia C.P.Wang et H .L.Yang , 1984 , Bull.Bo t.Res.4(4):
88 , pl.6.
376
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
Type collection:China:“Inne r M ongolia:Daqing shan , Jiu-wo-bao” .Ho lotype ?
Description:It dif fers f rom var.sinica by its plant wi th sho rt rhizome;leaf blades 1-2 mm broad(v s.
3-4 mm broad), st rong ly invo lute;w ith long callus hai rs laterally shor ter (0.1-0.3 mm long).
Cytology:Chromosome number 2n=?Genome ?
Distribution:China:Inner M ongolia;in ravine.
96b.var.media Keng
Nomenclature:R.sinica Keng var.media Keng , 1963 , in Keng &S.L.Chen , Acta N anking Univ.
(Biol.)3(1):34;1959 , Fl.Il l.Pl.Prim.Sin.Gram:389(in Chinese).-E lymus sinicus (Keng)S.L.
Chen var.med ius(Keng)S.L.Chen &G.Zhu , 2002 , Novon 12(3):427.
Type collection:China:“Shanxi:Wu-tai H sien , in terra vasta ad latus viae , alt.3500-4000 m , 11
VII 1929 , T .Tang 1045” .Holotype:PE!
Description:It differs f rom var.sinica by i ts leaf bldes 7 mm broad(v s.3-4 mm broad), and glumes
aw ned , g lume awn 1-3 mm long .
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Shanxi , Gansu , Sichuan;roadside s , st reamsides;alt.1500-4000 m.
97.R.sinkiangensis L.R.Cui
Nomenclature:R.sinkiangensis(D.F .Cui)L.B.Cai , 1997 , Acta phy to tax .Sin.35 (2):174(inva-
lid).-Elymus sinkiangensis D.F .Cui , 1990 , Bull.Bo t.Res.10(3):26.
Type collection:China:“Xinjiang Wulumuqi et Zhao su Xian , ad pratum et sy lva-pratum crescens , al t.
1800-2100 m , 25 VII 1982 , Cui , Nei-ran no.821769” .Holo type:XIAAC!
Description:Perennial wi thout creeping underground rhizomes and w i th f ibrous roots.Culms tufted;
60-71 cm tal l;g labrous.Leaf sheaths glabrous and wi th ret rorse hairs on the basal ones.Leaf blades
f lat;on upper surfaces sparsely vi llose;on low er surfaces glabrous;margins ciliate.Spikes erect;7-10
cm long .Rachis inte rnodes minute ci liate on tw o main ang les;4-7 mm long .Spikelets disposit ion se-
cund;green;w ith 4-6 f lo rets;w ith rachilla joints minutely puberulent;rachilla joints leng th 1-2 mm
long.Glumes lanceo late;unequal;hispidulous on nerves and wi th membranous margins;f irst glumes 7-
8 mm long;w ith 3-5 nerves;second g lumes 8-10 mm long;w ith 3-5 nerves;tips acuminate and aw n-
ed , 2 mm long.Lemmas , at least the f irst 10-12 mm long ;w ith back sparsely hirsute on upper par t and
marg ins and w i th callus only w ith minute hai rs and longer hair s on tw o sides;lemma awned;lemma awn
curved;lemma awn 20-35 mm long.Palea subequal to lemma;apex obtuse;9.5-11.5 mm long ;keels
ci liate on 1/2 of uppe r pa rt;w ith glabrous back.Anthers yellow ;1.5-2 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Xinjiang ;on montane meadow-steppes and fo rest g lade meadow s;al t.1800 -
2100 m.
98.R.sub f ibrosa Tzvel.
Nomenclature:Roegneria subf ibrosa Tzvel., 1964 , Arkt.Fl.SSSR 2:238.-Elymus sub f ibrosus
(Tavel.)Tzvel., 1970 , Spisok.Rast.Herb.Fl.SSSR 18:30.-E.f ibrosus subsp.subf ibrosus (Tzvel.)
Tzvel., 1973 , Nov.Sist.Vyssch.Rast.10:25.
Type collection:Russia:“Sibiria , obl.Jacutsk , Balaganach , in areno sis ad f luminem , 15 VII 1898 , N.
H .Nilsson” .Ho lotype:LE !
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
377
　　　 四川农业大学学报 第 26 卷
ed;25-80 cm tall;glabrous and spar sely scabrous below spikes.Leaf sheaths glabrous.Leaf blades fla t;
on upper surfaces sparsely pilo se;on low er surfaces scaberulous;margins scabrous.Spikes slight ly
curved;6-20 cm long.Rachis inte rnodes 10-20 mm long .Spikelets disposit ion bila teral i.e.no rmal;
g reen;w ith 2-4 f lo re ts;w ith rachilla joints densely pubescent.Glumes bro adly obovate;subequal;sca-
brous on the nerves and w ith bro ad membranous margins;f irst g lumes 4-7.5 mm long;w ith 3 -5
nerves;second g lumes 4.5-8 mm long ;w ith 3-5 nerves;tips acute , w ith 2-3(4)teeth , and abrupt ly
narrow ed into a point(1 mm long).Lemmas , at least the first 8-12 mm long;w ith back g labrous , upper part
sparsely minute spinulose on nerves , and with callus with minute hairs on two sides;lemma not aw ned but mucro-
nate;rarely with 2 mm long short aw n.Palea slight ly shorter than lemma;apex obtuse and emarginate;7.8-
11.8 mm long;keels scabrous;w ith glabrous back.Anthers yellow;1-1.5 mm long.
Cytology:Chromosome number 2n=4x =28[ 14] .Genomes ?
Distribution:Russia;on meadow s , rive rside sands and pebbles , among shrubs.
99.R.R.sylvat ica Keng et S.L.Chen
Nomenclature:R.sy lvatica Ken et S.L.Chen , 1963 , A cta Nanking Univ.(Biol.)3(1):36.-E ly-
mus sylvaticus (Keng et S.L.Chen)S.L.Chen , 1987 , Bull.Nanjing Bot Gard.Mem.Sun Yat Sen 1987:9.
Type collection:China:Xinjiang:“T singho-hsien , A-Erh-Tai-Sung-Kon-Ke , alt.1800 m , ad terram
si lvae laricis crescens , 20 V III 1956 , Expeditio sinkiangensis Chinae 1236” .Holo type:PE!
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
ed;100 cm tall;glabrous.Leaf sheaths g labrous.Leaf blades f lat;on upper surfaces scabrous;on low er
surfaces glabrous;margins scabrous.Spikes erect;7.5-8.5 cm long.Rachis internodes hispid-ci liate on
tw o main ang les;4-5 mm long.Spikelets dispo sitio n bilateral i.e.normal;g reen;w ith 3 flo rets;w ith ra-
chilla joints hi rtellous;rachilla joints leng th 1.5 mm long.Glumes lanceolate and symmetrical;subequal;
hirtel lous-scabrous and w ith membranous margins;fir st glumes 8-10 mm long;with 3 ne rves;second
g lumes 8-10 mm long ;w ith 5 nerves;tips acuminate , acute , and acute and mucronate(1-2 mm long).
Lemmas , at least the f irst 9-10 mm long;w ith back hirtellous , w ith narrow membranous margins , and
w ith callus w ith minute hairs(0.2 mm long);lemma no t aw ned but mucronate(1-3 mm long), and apex
of ten 1-too thed.Palea equal to lemma;apex emarginate;9-10 mm long;keels ciliate on who le leng th;
puberulent on back betw een keels.Anthers yellow;2 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Xinjiang;on meadow of Larix forest g lade;al t.1900 m .
100.R.t ianschanica(Drob.)Nevski
Nomenclature:R.t ianschanica(Drob.)Nevski , 1934 , Acta Univ.As.Med.Se r.8B 17:71.-Agro-
p yron tianschanicum Drob., 1923 , Vved.Opred.Rast.Okr.Taschk.1:41.non E lymus tianschanicus
Drob.1925.-Semeiostachy s t ianschanica (Drob.)Drob., 1941 , Fl.Uzbek.1:284.-E lymus uralensis
subsp.t ianschanicus Tzvel., 1973 , Nov.Sist Vy ssch.Rast.10:22.-E lymusczi likensis(Drob.)Tzvel.,
1968 , Rast.Tsentr.Azii.4:214.Quoad pl.E.t ianschanigenus Czerp., 1981 , So sud.Rast SSSR 30:618.
Type collection:Tadzhikistan:Tashkent:“Ad fl.Pskem.Dist r.Tashkent , Sy r-darja , 14 VIII 1920 ,
no.1254 , M .Popov et al.” .Lecto type:TAK !(Tzvelev , 1973).
Description:Perennial w i th sho rt rhizomes and w ithout fibrous roo ts.Culms tuf ted;50-100 cm tall;
g labrous.Leaf sheaths glabrous.Leaf blades flat;on upper surfaces scabrous or sparsely pilo se;on low er
surfaces scabrous and pilo se;margins g labrous.Spikes erect or slightly nodding;(7-)10-15(-17.5)
378
第 4 期 杨俊良(等):鹅观草属(Roegneria C.Koch)的订正(禾本科:小麦族) 　　　
cm long ;2-2.5 mm wide.Rachis internodes appressed pubescent;15 mm long.Spikelets dispo sitio n bi-
lateral i.e.no rmal and secund;g reenish purple;w ith 5-7(-9)flo re ts;with rachilla joints pilose;rachilla
joints leng th 1.5 -2 mm long.Glumes broadly lanceolate;subequal;scabrous on the nerves and w ith
membranous margins;fi rst g lumes 9-13 mm long;w ith 5-7 nerves;second glumes 9-13 mm long;
w ith 5-7 nerves;tips 1-to othed , acute and mucronate , and unequal sided.Lemmas , at least the fir st 9
-12(-15)mm long;w ith back scabrous , hirsute , and w ith callus only w ith minute hairs on ventral side;
lemma awned;lemma awn bidentate at the base and st raight;lemma awn (5-)10-16(-20)mm long.
Palea equal to lemma and rarely slight ly longer than lemma;apex obtuse and emarginate;10 -12 mm
long ;keels ciliate on 1/2 o f upper part;pubescent on back between keels.Anthers orange and yellow ;2.5
mm long .
Cytology:Chromosome number 2n=4x =28.Genomes ?
Distribution:Tadzhikistan , China , Kazakx stan;montane meadow s near stream , on sw ales , stony
slopes , forest glades , among shrubs;alt.2300-3300 m .
101.R.t roctolepis Nevski
Nomenclature:R.t roctolepis Nevski , 1934 , A cta Inst.Acad.S c.URSS , ser.I.2.53.-Agropyron
troctolepis(Nevski)Meld., 1970 , in K.H .Reich.F., Fl.Iranica 70:182.-E lymus troctolepis(Nevski)
Tzvel., 1972 , Nov.Sist.Vyssch.Rast.9:21.
Type collection:Russia:“Abkhazia , M tsaga demarcated area near foo thills of Akhibok mountain ,
limestone rocky slope , 1800-1900 m , 17 V III 1931 , Yu.Voronov” .Holotype:LE!
Description:Perennial w ithout creeping unde rg round rhizomes and wi thout fibrous roo ts.Culms
lo osely tuf ted;100-110 cm tall;g labrous and glaucescence.Leaf sheaths glabrous and glaucescence.Leaf
blades f lat;on upper surfaces scabrous and g laucous;on low er surfaces g labrous;margins scabrous.
Spikes e rect , o r slightly curved , and w ith dense spikelets;6-17 cm long.Rachis internodes scabrous on
tw o main angles;5-6 mm long (the low est up to 15 mm).Spikelets disposi tion bilateral i.e.no rmal;pur-
ple-glaucous and g laucous green;w ith 4-5 f lorets;w ith rachilla joints pi lose;rachilla joints leng th 1.5-
2 mm long.Glumes oblong-elliptic , asymme trical , and coriaceous;subequal;glabrous;fi rst g lumes 7-9
mm long ;w ith 5 nerves;second glumes 7-9 mm long;w ith 5 nerves;tips obtuse , 1-to othed , and e-
ro se.Lemmas , at least the first 10-11 mm long;with back glabrous , scaberulous on upper part , densely
pubescent on the low er par t , canescent , and w ith apex obtuse , emarginate and dentate;lemma awnless.
Palea sho rter than lemma;apex subobtuse and emarginate;8-8.5 mm long;w ith glabrous back.Anthers
yellow;2.2-2.8 mm long.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:Russia:Caucasus;on limestone rocks and stony slopes;alt 1800-1900 m.
102.R.viridula Keng et S.L.Chen
Nomenclature:R.v iridula Keng et S.L .Chen , 1963.Acta Nanking Univ.(Bio l.)3(1):39.-Ely-
mus v iridulus(Keng et S.L .Chen)S.L .Chen , 1987 , Bul l.Nanjing Bot.Gard.Mem .Sun Yat Sen 1987:9.
Type collection:China:Xinjiang:“U rum tsi:Nanshan , prope Hsiao-Chu-Tzu , ad declivita tem humidan
crescens;14/7 , 1956 , R.C.Ching 394” .Holotype:PE !
Description:Perennial wi thout creeping underg round rhizomes and wi thout fibrous roots.Culms tuf t-
ed;80 cm tall;g labrous.Leaf sheaths glabrous and w ith re tro rse hair s on basal ones.Leaf blades f lat and
involute;on upper surfaces scabrous;on lowe r surfaces glabrous;marg ins scabrous.Spikes erect , or
slight ly nodding , and w ith sparse remo te spikelets;7.5-9.5 cm long.Rachis internodes scabrous on tw o
379
　　　 四川农业大学学报 第 26 卷
main ang les;6-13 mm long.Spikelets dispo sitio n bilateral i.e.no rmal;g reen;with 5-6 f lorets;w ith ra-
chilla joints pube rulent;rachilla joints length 1-1.5 mm long .Glumes broadly lanceolate and asymme tri-
cal;equal;glabrous;f irst g lumes 7-11 mm long ;w ith 4-6 nerves;second g lumes 7-11 mm long ;w ith
4-7 nerves;tips acuminate and ending in a point (1-2 mm long).Lemmas , at least the first 10 mm
long;w ith back g labrous , margins and upper part scaberulous , w ith callus wi th minute hai rs on tw o sides
and ventral side , and w ith narrow membranous margins;lemma awned;lemma awn st raight;lemma awn 2
-6 mm long.Palea equal to lemma and slight ly sho rte r than lemma;apex t runca te and emargina te;9-10
mm long ;keels ciliate on 2/3 of upper part;puberulent on back between keels.Anthers y ellow ;3-3.5
(-4)mm long.
Cytology:Chromosome number 2n=4x =28.Genomes ?
Distribution:China:Xinjiang;on moist meadow s and hi llfo ot;alt.1900-2100 m.
103.R.yushuensis L.B.Cai
Nomenclature:R.yushuensis L.B.Cai ,1994 , Bull.Bo t.Res.14(4):338-340.-Elymus yudhuensis
(L.B.Cai)S.L.Chen &G.Zhu , 2002 , Novon 12(3):428.
Type collection:China:“Qinghai , Yushu , secus ma rg ines viarum alt.3750 m , 1980 , 6 , 24 , Z .D.Wei
22105” .Ho lotype:NWBI !
Description:Perennial wi thout creeping underg round rhizomes and wi th fibrous roo ts.Culms densely
tufted;45-60 cm tall;g labrous.Leaf sheaths g labrous.Leaf blades invo lute;on upper surfaces sparsely
villo se;on low er surfaces glabrous;margins w hite villose.Spikes nodding o r slightly nodding and w ith
sparse remote spikelets;7-18 cm long.Rachis internodes glabrous;7-8 mm long.Spikelets dispo sitio n
bilateral i.e.normal;purple;w ith 4 -6 flo rets;with rachilla joints densely pubescent;rachi lla joints
length 2-3 mm long .G lumes lanceolate;unequal;glabrous;f irst glumes 4-5 mm long ;with 3-5
nerves;second g lumes 6-7 mm long;with 3-5 nerves;tips acute and pungent.Lemmas , at least the
fi rst 8-9 mm long ;w ith back hirsute;lemma awned;lemma awn st raight;lemma aw n 2-4 mm long.
Palea equal to lemma and slight ly sho rter than lemma;apex t runcate;8-8.5 mm long;keels ciliate on up-
per par t;with g labrous back.
Cytology:Chromosome number 2n=?Genomes ?
Distribution:China:Qinghai;roadsides;alt.3500-4100 m.
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(本文审稿:周永红)
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