全 文 :二2≯一二z斗
广 西 植 物 Guihaia 13(3):223-224.Aug. 1993
贵州禾本科新分类群
. .堑 生. .登
(贵州省生物研究所.贵阳 B50009) (云南大学生物赢,昆明 650091) .
NEW TAXA O F GRAMINE囊iE fROM GUlZHOU ‘
c57f7 . ,
Peng ttua
(Guizhou Institute of Biology,Guiyang 550009)
BUn Bixing
(Department of Biology.Yunnan University.Kunming 650091)
关键调硬序羊茅;莎叶雀麦禾库牙l斗,京 群
Key wo rds Fe~fuca durata;Bretons psP oromosus var.se~gioide*
蠢序革茅 (新种 ) 图 1
Festuea durata B.X.Sun et H.Pong,gp·nov·
Haee speoies nova peculiari,a speciebus nobls bone disttncta;clifferr s F·
rusts Linn.spioulis 15— 22 (一 27) mm lougts. 1emmatibns ex spice aristis
6—1 3 mm longls. Primo visu F.vierhapperi Hand.一Mazz· subsimilis sod
panioulls 可口icatts duratis strlctisque differt.
Gram en poronne.Culmi ereott laxe cae印 itosi vel solttarii, ( 30 ) 5O一 80
(~ 11O) cm slti. 1- 2.5 mm erassi. Foliorum vaginae glabrae,lougiores vel
broviores quam Internodia;ltgulae scartosae suporne truncatae, oire· 0.5 mm
longae;laminae lineari-lanceolatae vel lincares,5- 15(一 25) cm longae,2- 8
mm latao,8aepo 8re~ae utrinque glabrae,planae vel margine loviter involutao,
anrioulis culmi manifesto ampleotentibus. Panieulae spicatae duratae stnctBe_
que。1O一25 em longae,8-15 mm latae;rami solitarii ereott,jux协 rhaehides
triangulati scaboruli,2— 4.gpi∞ 1is ad tames basales.Spieulse 4— 8一f1oT8eJ 15—
22(一27)mm longae(aristae oxc1.).rhachillarum articults glabris,2-2.5(一
3.O)mm longis;glumae lanccelatae membranaceae ad msrginem,3-norris(in-
terdum superior bssi 5-norris),spice acuminatae;inferior 3.5— 6 mm longae,
superior 5.5— 8.5 mm long,e;tommata lanceolata 5-norris,蚰 apicem m inute-
bilobata,nerve medio in aristam 6- 13 mm longam antrorse producto;lemma
inferius 6.5— 9.5 m m longum ;palos lem m ato longior vel aeqaalis. bicar~nataJ
seCu8~arinas ei~ia,o-scabra,suporno loviter depressa,Lpdiculse 2,membral~t-
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224 广 西 植 物 13卷
aoeae lanoeolatae,otto.1.5 mm longae; am ina 8 I antheTae flaVae 2.5— 3.5
mm longae;ovazlum valde glabruin;styli terminales·
Guizhou(责jlI)l Weinin8(威 宁 ),Caohai L e(草 海 ),alt·2200 in,
roadside,July 14,1964,Guizhou Herbage Exped.(黔牧队 )434J Artshun(安
顺),Tiaodengchang(跳蹬场),a1t.1460 in,on ridge,abundant,June 21,l 989
H.Peng(彭华 )0045~l~ezhang(赫章),Jiuoatptng(韭菜坪),8n·2580 m,To—
adside,Oct.25,1989,West Guizhou.Exped.(黔西队 )1830~ib_J ·2500 m,
west Guizhou.Exped.1857,ib.,West Guizhou.Exped·1864b(Type in HGAS);
ib-J ah.2590 in,Oct.28, 1989, W est Guizhou. Exped.2055~ ib_J alt· 2400—
2100 in,Oct.29,1989,West Gulzhou.Expad.2112,Anshun (安顺 ),Jiaozi-
ehan(轿予山),8l七.1530 m,in a dire1,Jun.19,l 991,Ⅱ·Peng 0937}ib.j
alt·1480 m ,Jnn·20, 1991, Ⅱ ·Peng 0947.
本新种甚特别,与我们已知的种易于区分。小穗长1 5—22(一27),外稃具6—13毫米
长的芒而与紫羊茅有别,乍看似与滇
藏羊茅相近,但其圆锥花序穗状、硬
直而有异。
莎升雀壹 (新变种 )
Bromus pseudoram osus
Keng VaY. sedgioidea B.X.
Sun etⅡ. Peng,vⅡ .∞ v.
A typo differt palels long—
itudine 2/3—3/4 l∞1matibug
partibus aequantibus, 叩 ice
pluzies minute-bilobatis, 一
theris brevioribusJ oirc.1.5 mIn
]ongis·
Guizhou(贵州 )l Hezhang
(赫章 ),Jiueaiping (韭菜坪),
an·2400— 2100 in,Oct.26,1989
West Guizhou·Exped.(黔西队)
1968 (Type in YUNU); ib.
W est Guizhou.Exp乩 1991.
与原变种的区别在于内稃长为外
稃的 2/8— 8/4,顶端常微=裂,
花药较短,长约1.5毫米。
图 i 疆序羊茅 Fest~ca durata B.X.
Sun etH.Peng
1.植株I 2.花f豫 部,』、穗J 8.小花j 4.鳞被,
雄蕊及雌蕊。 (何平接 )
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