全 文 ：云南毛茛科新分类群
?
王文采
(中国科学院植物研究所系统与进化植物学国家重点实验室 , 北京 100093)
摘要 : 描述了云南高黎贡山毛茛科银莲花属 1 新变种 , 铁线莲属 2 新种和毛茛属 2 新种。
关键词 : 云南 ; 毛茛科 ; 银莲花属 ; 铁线莲属 ; 毛茛属 ; 新分类群
中图分类号 : Q 949 文献标识码 : A 文章编号 : 0253 - 2700 (2008) 05 - 519 - 06
New Taxa of Ranunculaceae from Yunnan
WANG Wen-Cai (WANG Wen-Tsai )
( State key Laboratory of Systematic and Evolutionary Botany, Instituteof Botany,
Chinese Academy of Sciences, Beijing 100093 , China)
Abstract: In this paper, onevariety and four species of Ranunculaceae, Anemone yulongshanica W . T . Wang var. gla-
brescens W . T . Wang, Clematis tengchongensisW . T . Wang, C. lushuíensisW . T . Wang, Ranunculus pianmaensisW .
T . Wang and R. tengchongensis W . T . Wang, are described as new on the basis of the plant specimens collected from
Gaoligong Shan, western Yunnan Province, China in recent years .
Key words: Yunnan; Ranunculacese; Anemone; Clematis; Ranunculus; new taxa
今年十月下旬 , 美国加里福尼亚州科学院的
Bruce Bartholomew博士寄来他和中国科学院昆明
植物研究所李恒教授近十年来在云南高黎贡山一
带采集的丰富毛茛科植物标本 , 托我鉴定 , 在鉴
定过程中发现该科银莲花属 1 新变种 , 铁线莲属
和毛茛属各 2 新种 , 现在本文予以发表。
银莲花属 AnemoneL .
福贡银莲花 (变种 ) 图 1: A～C
Anemone yulongshanica W . T . Wang var. gla-
brescens W . T . Wang, var . nov . Fig . 1 : A-C
A var. yulongshanica et var. truncata ( Comber)
W . T . Wang scapis et petiolis glabris differt, quoad
amplitudinemlaminarum foliorum basalium (0 . 8 - 2 .3
×1 - 4 cm) et sepalorumnumerumet coloremadvar. -
truncatammagis accedit .
Scapi 5 .5 - 21 cm longi . Folia basalia: petioli 3
- 10 cm longi; laminae 0.8 - 2.3 cm longae, 1 - 4 cm
latae, 3-partitae, interdum 3-sectae . Sepala 5 , coer-
ulea vel alba, 7 - 13 mm longa, 3 - 9 mmlata .
Yunnan . Fugong Xian ( 福 贡 县 ) : Lumadeng
Xiang, Yaping Cun, in the vicinity of Yaping Yakou
just E of the pass near the Myanmar border, E sideof
Gaoligong Shan, elev . 3 600 m, perennial herb com-
mon, growing in wet meadow, sepals blue or white, 5
August 2005 , Gaoligong Shan Biodiversity Survey
26397 ( holotype, PE ; isotype, CAS) [ Participants:
Li Heng, Dao Zhiling, Ji Yunheng, LiuBenxi & Tang
Anjun ( KUN ) ; B . Bartholomew & Lihua Zhou
(CAS ) ; Jin-Hynb Paik & S . A . Crutchley ( E ) ] ;
same locality, elev . 3 640 m, perennial herb frequent,
growing in wet meadow, sepalsblueto white, 5 August
2005 , GSBS 26453 (CAS, PE) ; same locality, elev .
3 600 m, perennial herb abundant, growing on wet
云 南 植 物 研 究 2008 , 30 (5) : 519～524
Acta Botanica Yunnanica DOI : 10 .3724?SP. J . 1143 .2008.07304
? ?收稿日期 : 2007 - 12 - 18 , 2008 - 01 - 22 接受发表
作者简介 : 王文采 (1926 - ) 男 , 研究员 , 中国科学院院士 , 从事被子植物分类学研究。
slope by lake, 24 August 2005 , GSBS 28024 ( CAS,
PE) ; same locality, Lishadi Xiang, Yaduo Cun, elev .
3 640 m, perennial herb abundant, growing on wet
slope by stream, sepals white or blue, 24 August
2005 , GSBS 28042 ( CAS, PE) ; same locality, Yap-
ing Xiang, elev . 3 106 m, perennial herb growing at
wet area, sepals white, blue abaxially, 8 May 2004 ,
GSBS 20441 ( CAS ) [ Participants: Li Heng, Dao
Zhiling, Li Rong, Jiang Zhutang & J i Yunheng
(KUN) ; P . Fritsch & Lihua Zhou ( CAS) ; K . Arm-
strong (E) ] .
玉龙山银莲花 Anemone yulongshanica W . T .
Wang (王文采 , 1996 ) 隶属银莲花属纯裂银莲花
组 sect . Himalayicae (Ulbr .) Juz . (Tamura, 1995) ,
其主要特征为叶片轮廓卵形 , 掌状 3 深裂 , 基部
心形或近截形 , 萼片 5 或 6 枚 ; 原知包含 2 变
种 : ( 1) 模式变种 var. yulongshanica, 特产云南
丽江玉龙雪山 , 其特征为植株较高大 , 基生叶叶
柄长 6～11 cm, 与花葶均被短柔毛 , 叶片长达 6
cm, 萼片 6 枚 , 白色 ; (2 ) 截基银莲花 var. tr-
uncata ( Comber) W . T . Wang 分布于云南丽江 ,
四川木里 , 其特征为植株较低矮 , 基生叶叶柄长
4～5 cm, 与花葶均密被较长柔毛 , 叶片长达 3 .5
cm, 萼片 5 ( - 6 ) 枚 , 呈白色、黄色或蓝色。
上列采自云南福贡的 5 号标本代表了同一分类
群 , 在基生叶形态、花构造等方面均与玉龙银莲
花相似 , 因此将其处理为此种的第三个变种。此
新变种的叶柄和花葶均无毛 , 可与上述其他二变
种相区别 ; 其基生叶叶片较小 , 长达 2 .3 cm, 萼
片 5 枚 , 呈蓝色或白色 , 根据这些特征可见此变
种在亲缘关系上与 var. truncata 更为接近。
铁线莲属 ClematisL .
腾冲铁线莲 图 1: D～E
Clematis tengchongensis W . T . Wang, sp .
nov . (Sect . Cheiropsis DC) Fig . 1 : D-E
Species nova haec est fortasse affinis C. brevipedi
Rehd ., quae ramis glabris vel ad nodos tantum sparse
puberulis, foliis 5-foliolatim pinnatis, foliolis supra ad
nervos sparse albo-puberulis, sepalis late obovatis vel
orbiculari-rhombicis facile differt .
Liana lignosa . Caulis circ . 2 m longus, ramis
teretibus circ . 2 mmindiametro, densestrigosis . Folia
opposita, ternata; foliola papyracea, rhombico-ovata,
1 . 8 - 4 cm longa, 1 - 2 .6 cm lata, apice acuta, basi
late cuneata, medio 3-fida, margine pauce dentata,
supra dense luteolo-strigosa, subtus dense pubescen-
tia, nervis basalibus et lateralibus subtus prominulis,
petiolulis 2.5 - 9 mm longis; petioli 1 .3 - 3 cm longi ,
cumpedunculis et pedicellis dense luteolo-strigosi . Cy-
mae axillares, 3-florae; pedunculi 7 - 8 .5 cm longi;
bracteae breviter petiolatae, rhombico-ovataevel rhom-
bico-ellipticae, 2 - 2 .4 cm longae, margine 2-denticu-
latae vel integrae; pedicelli 4 - 5 cmlongi ; flores api-
cales singulariter axillares, pedicellos 4.2 - 5 cmlongos
ferentes . Flos 4 .5 - 5 cmin diametro; sepala 4 , alba,
patentia, late elliptica, circ . 2 . 8 cmlonga, 1 . 1 - 1 .3
cmlata, apice acuta, brevissime apiculata, intus gla-
bra, extus depresse puberula, juventute margine velu-
tina; stamina circ . 50 , 6 - 9 mm longa, glabra, fila-
mentis linearibus, antheris oblongis 2 - 2.5 mm longis
apiceobtusis raro inconspicue apiculatis; carpella nu-
merosa, circ . 8 mm longa, ovariis circ . 1 mm longis
dense pubescentibus, stylis densevillosis .
Yunnan . Tengchong Xian ( 腾冲县 ) : Mazhan,
Dakong Shan volcano, elev . 1 940 m, on outer sideof
volcano among shrubs and grass; vine ca . 2 m long,
rare, sepals yellow, stamens greenish yellow, 2 June
2006 , Gaoligong Shan Biodiversity Survey 29896 ( ho-
lotype, CAS) [Participants: Li Heng, Dao Zhiling, Ji
Yunheng & J in Xiaohua (KUN) ; Bruce Bartholomew
& Lihua Zhou ( CAS) ; Neil McCheyne ( E) ] .
本种花的萼片 4 枚 , 白色 , 水平展开 , 呈宽
椭圆形 , 外面边缘在花蕾时期被短绒毛 , 但开放
后边缘毛变稀疏 , 雄蕊无毛 , 花丝条形 , 花药长
圆形 , 具有这些形态特征应是隶属绣 球藤组
sect . Cheiropsis DC . ( 王文采 , 2002 ) 的一个新成
员。在绣球藤组中 , 本种稍近特产甘肃南部的短
梗铁线莲 C . brebipes Rehd ., 但本种的枝条密被
糙伏毛 , 叶为三出复叶 , 小叶上面密被淡黄色糙
伏毛 , 萼片呈宽椭圆形 , 而与短梗铁线莲有明显
区别。在后者 , 枝条无毛或只在节上疏被短柔
毛 , 叶为具 5 小叶的羽状复叶 , 小叶上面脉上疏
被白色短柔毛 , 萼片呈宽倒卵形或圆菱形。
025 云 南 植 物 研 究 30 卷
图 1 A～C : 福贡银莲花 A . 植株全形 ; B . 雄蕊 ; C . 心皮
(自 GSBS 29896) ; D～ E: 腾冲铁线莲 D . 花枝 ; E . 雄蕊
( 自 GSBS 27957 ) ; F～H: 泸水铁线莲 F . 花枝 ; G . 雄蕊 ;
H . 退化雄蕊 ( 自 GSBS 26453)
Fig . 1 A-C Anemone yulongshanica W . T . Wang var. glabrescens W .
T . Wang . A, habit; B , stamen; C, carpel . ( fromGSBS 29896) ; D-E
Clematis tengchongensis W . T . Wang . D, flowering branch; E, stamen .
( fromGSBS 27957) ; F-H . Clematis lushuiensis W . T . Wang . F , flow-
ering branch; G, stamen; H , staminodes ( fromGSBS 26453)
泸水铁线莲 图 1: F～H
Clematis lushuiensis W . T . Wang, sp . nov .
(sect . Naraveliopsis Hand . -Mazz . Fig . 1 : F-H
Ob sepalorum colorem, formam et amplitudinem
species nova haec est similis C. pianmaensi W . T .
Wang, quae ut species nova etiamin Lushui endemica
est et foliis 5-foliolatim pinnatis, petiolis basi laminis
stipuliformibus carentibus, sepalis extus velutinis, sta-
minibus omnibus fertilibus statimab ea recedens .
Liana lignosa . Caulis circ . 5 m longus, glaber,
ramis longitudinaliter 4 - 6-canaliculatis . Folia opposi-
ta, ternata, glabra; foliola chartacea, elliptico-ovata
vel oblongo-ovata, 6 - 9 .2 cm longa, 2 - 3 .6 cm lata,
apice acuminate, basi late cuneata vel cuneata, mar-
gine integra, trinervia, nervis lateralibus 1-jugis supra
folioli basin usque ad 5 - 10 mm e costa mediana sub
angulo acuto folioli apicem versus abeuntibus subtus
subplanis, petiolulis 3 - 6 cm longis; petioli 9 - 10 .5
cmlongi , basi utrinsecus laminis stipuliformibus semi-
orbicularibus vel semicordatis 0 .6 - 1 .4 cm longis 3 - 9
mmlatis praediti . Cymae terminals circ . 16 cmlongae
9-florae, paniculiformes, eae axillares 3-florae, omnes
glabrae; pedunculi 7 - 20 cm longi; bracteae petiola-
tae, foliiformes vel simplices, anguste ovatae vel an-
gusteoblongae, circ . 6 cm longae; pedicelli 3 - 15 .5
cmlongi . Flos 7 - 8 cm in diametro; sepala 4 , lutea,
patentia, papyracea, lineari-lanceolata vel late linear-
ia, 4 - 4 .4 cm longa, 8 - 9 mm lata, apice attenuata,
utrinqueglabra, extus ceracea, longitudinaliter 8-nerv-
ia; stamina numerosa, anguste linearia, 1 - 2 .2 cm
longa, 0 . 5 - 1 mmlata, glabra, multa antheris carentia
et in staminodia transientia, aliquot fertilia, antheris
anguste oblongis circ . 3 mm longis apice, apiculis an-
guste ligulatisvel subulatis 1.5 - 3 mmlongis instructa;
carpella numerosa, 1 - 1 .5 cm longa, ovariis circ . 1
mmlongis dense pubescentibus, stylis densevillosis .
Yunnan . Lushui Xian ( 泸水县 ) : Luobenzhuo
Xiang, BaodengCun, E sideof Gaoligong Shan, elev .
2 450 m, in subtropical evergreen broadleaf forest, vine
ca . 5 m long, occasional , flowers yellow, 22 August
2005 , Gaoligong Shan Biodiversity Survey 27957 ( ho-
lotype, CAS; isotype, PE) .
本种花的萼片 4 枚 , 水平开展 , 雄蕊无毛 ,
花药顶端具突出的长尖头 , 应是菝葜叶铁线莲组
sect . Naraveliopsis Hand . -Mazz . 的第 21 位成员
(王文采 , 2006 )。在此组中 , 本种在萼片的颜
色、形状和大小等方面都与特产同一泸水县片马
镇的片马铁线莲 C. pianmaensis W . T . Wang ( 花
的萼片 4 枚 , 黄色 , 披针状长圆形 , 长 2 .7～3 .5
cm, 宽 8～10 mm) 十分相似 , 而可能有一定亲
缘关系 , 但本种的叶为三出复叶 , 叶柄基部两侧
各有 1 个托叶状的小叶片 , 萼片无毛 , 雄蕊中有
多数无花药 , 成为退化雄蕊而与片马铁线莲有明
显区别。在后者 , 叶为具 5 小叶的羽状复叶 , 叶
柄基部无托叶状小叶片 , 萼片外面密被短绒毛 ,
雄蕊全部能育。
在铁线莲属 , 多数种的萼片内面无毛 , 外面
1255 期 王文采 : 云南毛茛科新分类群
多少有毛 , 有些种则内、外两面都有毛 , 萼片无
毛的种只有 2 个 : 绣球藤组 sect . Cheiropsis DC .
(王文采 , 2002 ) 的槭叶铁线莲 C . acerifolia Max-
im . (包含 2 变种 : var. acerifolia 特产北京 ; var .
elobata S . X . Yan特产河南济源和修武 ) 和威灵
仙组 sect . Clematis特产俄国远东地区的 C. sich-
otealinensis Ulanova (王文采 , 2003 ) 。本种的萼片
无毛 , 是铁线莲属种第 3 个萼片无毛的种。
毛茛属 Ranunuculus L .
片马毛茛 图 2
Ranunculus pianmaensis W . T . Wang, sp .
nov . (Sect . Ranunculus) Fig . 2
Species nova haec acheniis utrinque leviter conv-
exis fortasse ad sect . Ranunculumpertinet et in eo est
aliquantum similis R. nephelogeni Edgew ., qui foliis
margine integris raro 1-dentatis, floribus singulariter
terminalibus majoribus, petalis6 - 8 mmlongis, eorum
foveolis nectariferis squamis carentibus, acheniis utrin-
que magis convexis facile differt; habitu ea est simil-
lima R. tringulari W . T . Wang ( sect . Ficariifolium
L . Liou) , qui acheniis tuberculatis, petalisorbiculari-
obovatis valde distinguitur .
Herba perennis . Caulis 25 - 40 cm altus, e basi
vel parte infera ramosus, superne sparsissime strigo-
sus . Folia basalia circ . 2 , vulgo cito emarcida, longe
petiolata, laminis papyraceis longeovatis circ . 3 . 5 cm
longis 1 .3 cm latis apice attenuatis basi subrotundatis
margine denticulatis sparsissime ciliolatis utrinque gla-
bris, petiolis 3 .8 - 5 cm longis glabris basi anguste
vaginatis; ea caulina longevel breviter petiolata, lami-
nis ovatis subtriangularibus late lanceolatis vel lanceo-
latis1 .2 - 4 .6 cmlongis 0 .5 - 1 .5 cmlatis basi rotun-
datisvel late cuneatis raro subcordatis utrinque glabris
vel subtus sparse strigosis, petiolis 1.2 - 4 cm longis .
Cincinni terminales et axillares, 3 - 6-flori ; bracteae
breviter petiolataevel subsessiles, longeovataevel lan-
ceolato-lineares, 0 . 8 - 2 cm longae, 1 - 8 mm latae,
margine paucedenticulataevel integrae; pedicelli grac-
iles, 1 - 2 .4 cmlongi , glabri vel subglabri . Flos 7 - 8
mmin diametro; receptaculumtenuiter conicum, apice
pilosum; sepala 5 , naviculari-obovata, circ . 2 mm
longa, 1 . 1 - 1 .2 mm lata, glabra vel superne sparse
ciliolata; petala 5 , lutea, late oblonga vel late obova-
ta, 2 . 5 - 4 mmlonga, 1 . 8 - 4 mmlata, apice rotunda-
ta, basi brevissime unguiculata, foveolarum nectarif-
erarumsquamis lateovatis circ . 0 . 3 mmlongis et latis;
stamina circ . 15 , 1.4 - 2 mmlonga, glabra, filamentis
linearibus0 .8 - 1 .2 mm longis, antheris ellipticis 0 .5
- 0 .8 mm longis; gynoecium subglobosum, circ . 1 . 8
mm in diametro, carpellis numerosis anguste ovoideis
0 .9 mm longis, stylis brevibus, stigmatibus puncti-
formibus . Acheniaoblique lateovata, 1 - 1 .2 mm lon-
ga, utrinque leviter convexa, glabra, laevia, stylis
persistentibus 0 .1 mmlongis .
图 2 片马毛茛 A . 茎下部 ; B . 茎上部和顶生蝎尾状聚散花絮 ;
C . 萼片 ; D . 花瓣 ; E . 雄蕊 ; F . 心皮 ; G . 瘦果 ( 自 GSBS 22796)
Fig . 2 Ranunculus pianmaensis W . T . Wang, sp . nov . A . lower
part of stem; B . upper part of stem and terminal cincinnus;
C . sepal outside; D . petal ; E . stamen; F . carpel ;
G . achene . ( fromGSBS 22796 )
Yunnan . Lushui Xian ( 泸水县 ) : Pianma ( 片
马 ) , Gangfeng Village, W side of Gaoligong Shan,
elev . 1860 m, herb frequent, growing on a boulder
amongmoss on limestone, flowers yellow, young fruits
green, 14 May 2005 , GaoligongShan Biodiversity Sur-
225 云 南 植 物 研 究 30 卷
vey24183 (holotype, PE ; isotype, CAS) ; same local-
ity, W of Pinama at the Myanmar border, elev . 1 830
m, herb rare, growing under forest, flowers yellow,
fruitsgreen, 12 May 2005 , GSBS 22711 (CAS) ; same
locality, along the river in the vicinity of Pianma
hydroelectric station, elev . 1 820 m, herb occasional ,
growing along roadside, flowers yellow, 12 May 2005 ,
GSBS 22796 (CAS, PE) ; same locality, along the Pi-
anma River in vicininty of Pianma, elev . 1 950 m,
herb rare, growing in wet bank of Pianma River, 16
May 2005, GSBS 23270 ( CAS, PE ) ; same locality,
Gangfeng Village, elev . 1 600 m, herb frequent, grow-
ingby the stream in front shade, 18 May 2005, GSBS
23377 ( CAS, PE ) ; same locality, on slopes above
Wuzhong River, W of GulangCun, elev . 1 859 m, herb
occasional , growing in rivulet in sun, in humus on
limestone, 4 May 2005 , GSBS 24122 (CAS, PE) .
本种的瘦果两侧稍微鼓起 , 可能隶属于美丽
毛茛组 sect . Ranunculus ( Tamura, 1995 ) ; 在此组
中与云生毛茛 R. nephelogenes Edgew . 稍相似 , 在
叶边缘有小齿 , 花 3～6 朵组成蝎尾状聚伞花序 ,
较小 , 花瓣只长约 2 mm, 密槽有小鳞片 , 瘦果
两侧稍微鼓起等特征与后者明显区别。在后者 ,
叶边缘全缘 , 稀有 1 齿 , 花单朵顶生 , 较大 , 花
瓣长 6～8 mm, 密槽无鳞片 , 瘦果两侧鼓起程度
较大。本种在体态方面与西南毛茛组 sect . Ficar-
iifoliumL . Liou 的三角叶毛茛 R. triangularis W .
T . Wang ( 王文采和李良千 , 1987) 极为相似 , 但
后者的瘦果有瘤状突起 , 花瓣成圆倒卵形 , 与本
种 (瘦果光滑 , 花瓣呈宽长圆形或宽倒卵形 ) 有
较大区别。
腾冲毛茛 图 3
Ranunculus tengchongensis W . T . Wang, sp .
nov . (Sect . Acris Schur) Fig . 3
Species nova haec est affinis R. trigono Hand . -
Mazz ., qui caule et petiolispatulepubescentibus, pet-
iolis brevioribus 1 .4 - 18 cm longis, sepalis per anthe-
sin reflexis, staminibus numerosis praeclare recedit .
Herba perennis . Caulis circ . 40 cm altus, e me-
dio 2-ramosus, cum petiolis sparse longeque strigosus .
Folia basalia circ . 3 , longissime petiolata, laminis
chartaceis ambitu pentagonis 2 .5 - 3 cm longis 4 - 4 .5
cmlatis basi subtruncatis 3-sectis, segmentis medianis
rhombico-obovatis 1 .2 - 1 .5 cm latis apice acutis basi
cuneatis 3-lobatis margine denticulatis, eis lateralibus
obliqueobovatis inaequaliter admedium2-fidis, omni-
bus utrinque strigosis, petiolis22 - 24 .5 cmlongis basi
anguste vaginatis; folia caulina eis basalibus similia,
sed minora et brevius petiolata . Cincinni terminales et
axillares, 2 - 4-flori; bracteae breviter petiolatae vel
sessiles, foliis caulinis similes, sed minores vel lin-
eares, 3 - 10 mm longae; pedicelli 0 .8 - 3 cm longi ,
sparse strigosi vel subglabri . Flos circ . 7 . 5 mmindia-
metro; receptaculum subglobosum, apice pilosum; se-
pala 5 , patentia, obovata, 2 . 5 - 3 mm longa, 1 . 5 - 2
mm lata, extus longe strigosa; petala 5 , lutea, late
oblonga, 2 - 4 .2 mmlonga, 1 . 2 - 2 mmlata, apice ro-
tundata, glabra, foveolarum nectariferarum squamis
图 3 腾冲毛茛 A . 植株全形 ; B . 萼片 ; C . 花瓣 ; D . 雄蕊 ;
E . 心皮 ; F . 瘦果 (自 GSBS 29700)
Fig . 3 Ranunculus tengchongensis W . T . Wang, sp . nov .
A . habit; B . sepal inside; C . petal ; D . stamen; E . carpel ;
F . achene (fromGSBS 29700)
3255 期 王文采 : 云南毛茛科新分类群
semiellipticis 0 .25 mm longis 0 .7 mm latis; stamina
circ . 10 , 1 .5 - 1 .8 mm longa, glabra, filamentis lin-
earibus 0 .6 - 1 mmlongis, antheris late ellipticis0 .7 -
1 mm longis; gynoecium subglobosum, circ . 2 . 2 mm
in diametro, carpellis circ . 20 , 0 .9 - 1 mmlongis gla-
bris, ovariis ovoideis, stylis brevissimis . Achenia com-
planata, oblique elliptica vel oblique obovata, 2 . 8 -
3 .5 mmlonga, 1 . 8 - 2 mm lata, glabra, laevia, secus
suturas ventrales et dorsales anguste marginata .
Yunnan . Tengchong Xian ( 腾 冲 县 ) : Daju,
Beihai ca . 12 direct kmNNE of Tengchong, elev . 1 730
m, perennial herb rare, growing in Sphagnum bog, in
humus onvolcanic, flowersyellow, 29 May2006 , Gaol-
igongShan Biodiversity Survey29700 (holotype, CAS) .
本种与在云南高原分布的棱喙毛茛 R. tri-
gonus Hand . -Mazz . 有亲缘关系 , 但茎和叶柄疏
被糙伏毛 , 叶柄较长 , 长 22～24 .5 cm, 萼片平
展 , 雄蕊较少 , 10 枚 , 而与后者不同。在棱喙
毛茛 , 茎和叶柄被开展柔毛 , 叶柄较短 , 长 1 .4
～18 cm, 萼片在花期反折 , 雄蕊多数。
致谢 蒙 Bruce Bartholomew 博士借阅标本和惠赠副份标
本 , 孙英宝先生为本文绘图。
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425 云 南 植 物 研 究 30 卷