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Clematis dongchuanensis, a new species of Ranunculaceae from Yunnan

东川铁线莲, 云南毛茛科一新种



全 文 :广 西 植 物 Guihaia May2014,34(3):287-289           http://journal.gxzw.gxib.cn 
DOI:10.3969/j.issn.1000G3142.2014.03.001
王文采.东川铁线莲,云南毛茛科一新种[J].广西植物,2014,34(3):287-289
WANG WenGTsai.Clematisdongchuanensis,anewspeciesofRanunculaceaefromYunnan[J].Guihaia,2014,34(3):287-289
东川铁线莲,云南毛茛科一新种
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:描述了自云南东北部发现的毛茛科铁线莲属一新种,东川铁线莲.此种由于其叶为单叶,萼片直立,
雄蕊的花丝和花药均被短柔毛而与曲柄铁线莲近缘,与后者的区别在于其叶呈心状卵形,叶缘具粗牙齿,花序
为二歧聚伞花序,以及花药顶端钝,不具短尖头.
关键词:毛茛科;铁线莲属;新种;云南
中图分类号:Q949.746  文献标识码:A  文章编号:1000G3142(2014)03G0287G03
Clematisdongchuanensis,anewspecies
ofRanunculaceaefromYunnan
WANG WenGTsai
(StateKeyLaboratoryofSystematicandEvolutionaryBotany,InstituteofBotany,
theChineseAcademyofSciences,Beijing100093,China)
Abstract:AspeciesofthegenusClematis(Ranunculaceae),C.dongchuanensis,isdescribedasnewfromnortheastG
ernYunnan.Inhavingsimpleleaves,erectsepalsandpuberulousfilamentsandanthersofstamensthisspeciesisreG
latedtoC.repensFinet&Gagnep.,andfromthelatterdifersinitscordateGovateandcoarselydentateleaves,dichotG
omouscymes,andobtuse,notapiculateapexesofanthers.
Keywords:Ranunculaceae;Clematis;newspecies;Yunnan
  东川铁线莲 图1
ClematisdongchuanensisW.T.Wang,sp.nov.
Fig.1.
sect.Viorna (Reichb.)Prantlsubsect.ConG
nataeKoehne
Obfoliasimplicia,sepalaerecta,etstaminumfilaG
mentaantherasqueomninopuberulasspeciesnovahaec
estafinisC.repentiFinet&Gagnep.,quaefolissimG
plicibusvelfoliternatifolioliselipticisindivisisbasi
latecuneatisvelrotundatisrarosubcordatismargine
sparsedenticulatisvelintegris,cymisaxilaribus1GfloG
ris,sepalisdorsoglabris,antherisapiceapiculatisfacile
difert.
Woodyvine.Stem1-2mlong(accordingtothe
colector);branchletsslender,ca.1mmacross,sparsely
puberulous.Leavesopposite,simple;bladespapery,
cordateGovateorpentagonalGovate,9-12cmlong,4-
6.5cmbroad,apexacuminate,basecordate,3Globed;
centrallobelarger,ovate,6-8cmlong,withmargin
unequalycoarselydentate,laterallobessmaler,obG
liquelyflabelate,unequaly2Globulate,withmarginunG
equalycoarselydentate;surfacesadaxialysparsely
strigilose,abaxialyappressedGpubescent;venationtriG
nerved,withnervesnearlyflat;petioles4-6.5cmlong,
sparselypuberulous.Dichotomouscymeterminal(?),ca.
15cmbroad,threetimesbranched,ca.12Gflowered;
收稿日期:2013G03G20  修回日期:2013G08G15
作者简介:王文采(1926G),男,山东掖县人,研究员,中国科学院院士,著名植物分类学家,长期从事有花植物学研究.
图1 东川铁线莲 A.部分枝条;B.聚散花序;C.萼片(背面观);D.雄蕊;E.心皮.(孙英宝绘图)
Fig.1 Clematisdongchuanensis A.Partofabranch;B.Cyme;C.Sepal(dorsalview);D.Stamen;E.Carpel.(DrawnbySUNYingGBao)
peduncleca.7cmlong,subglabrous;bracts2opposite,
lanceolateGlinear,ca.8mmlong,1mmbroad,abaxialy
sparsely pubescent,base decurrentand auriculate;
branchesandpedicelsglabrous;bractsofbranchesopG
posite,linear,2.5-5.8mmlong,puberulous;pedicels
0.35-6.5cmlong.Flowerslightlypendulous:Calyx
882 广 西 植 物                  34卷
broadlycampanulate;sepals4,erect,yelowGgreen(acG
cordingtothecolector),oblongGovate,13-15 mm
long,5-6mmbroad,adaxialyandabaxialydensely
appressedGpuberulous,apexobtuse,marginaboveveluG
tinous.Stamensca.50,11-13.2mmlong;filaments
narrowGlinear,9-10 mmlong,ca.0.4 mm broad,
denselypuberulous,longitudinaly1Gnerved;anthers
linear,2.2-2.8mmlong,0.4mmbroad,abaxialypuG
berulous,apexobtuse.Carpelsca.40,ca.9mmlong;
ovariesca.1 mm long,appressedGpubescent;styles
slender,ca.8mmlong,belowdenselylongsericeous
(withhairs2-4.5mmlong),abovedenselysericeousG
pubescent(withhairs0.5-1mmlong),apexslightly
thickened.
木质藤本.茎长1-2m (据采集者);小枝细,
粗约1mm,疏被短柔毛.叶对生,为单叶;叶片纸
质,心状卵形或五角状卵形,长9-12cm,宽4-6.5
cm,顶端渐尖,基部心形,3浅裂,中央裂片较长,卵
形,长6-8cm,边缘有不等大的粗牙齿,侧裂片较
小,斜扇形,不等微2裂,边缘有不等大的粗牙齿,上
面疏被短糙伏毛,下面被贴伏柔毛,三出脉,脉近平;
叶柄长4-6.5cm,疏被短柔毛.二歧聚伞花序顶
生(?),宽约15cm,三回分枝,约有12花;花序梗长
约7cm,近无毛;苞片2,对生,披针状条形,长约8
mm,宽1mm,下面疏被柔毛,基部下延,呈耳状;分
枝和花梗无毛;分枝的苞片对生,条形,长2.5-5.8
mm,被短柔毛;花梗长0.35-6.5cm.花稍下垂:
花萼宽钟状;萼片4,直立,黄绿色(据采集者),长圆
状卵形,长13-15mm,宽5-6mm,两面密被贴伏
短柔毛,顶端顿,边缘上部被短绒毛.雄蕊约50,长
11-13.2mm;花丝狭条形,长9-10mm,宽约0.4
mm,密被短柔毛,具1条纵脉;花药条形,长2.2-
2.8mm,宽0.4mm,背面被短柔毛,顶端钝.心皮
约40,长约9mm;子房约1mm,被贴伏柔毛;花柱
细长,长约8mm,下部密被长绢毛(毛长2-4.5
mm),上部密被绢状柔毛 (毛长0.5-1mm),顶端
稍变粗.
云南 (Yunnan):东 川 (Dongchuan),因 民
(Yinmin),小山脑 (Xiaoshannao),alt.2290m,崖
边 (bycliff),藤本长1-2m (vine1-2mlong),
花黄绿色 (fls.yelowGgreen),1984G09G11,蓝顺彬
(LanShunGbin)217(holotype,PE).
本种的叶为单叶,萼片直立,雄蕊花丝和花药均
被短柔毛,曲柄铁线莲(ClematisrepensFinet&
Gagnep.)也具上述形态特征,这种情况说明本种在
亲缘关系上接近曲柄铁线莲,与后者的区别是本种
的叶呈心状卵形,3浅裂,边缘有粗牙齿,花序为具
约12朵花的二歧聚伞花序,萼片两面密被短柔毛,
雄蕊花药顶端钝,无短尖头.在曲柄铁线莲,其单叶
或有时为三出复叶的小叶均呈椭圆形,不分裂,基部
宽楔形或圆形,稀浅心形,边缘具少数小牙齿或全
缘,聚伞花序腋生,只具1花,萼片外面无毛,雄蕊花
药顶端有短尖头(方明渊,1980).
致谢 深切感谢孙英宝先生为本文绘图.
参考文献:
FangMY(方明渊).1980.Clematissect.Viorna[M]//Floraof
China(中国植物志).Bejing(北京):SciencePress(科学出版
社),28:88-133
􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘􀥘
(上接第332页Continuefrompage332)
 munitystructureinaforestecosystemintheSouthernMountains
ofUrumqi(乌鲁木齐南部山区森林生态系统树生地衣群落)
[J].ChinBullBot(植物学报),44(5):578-586
TumurA(艾尼瓦尔􀅰吐米尔),AbbasA(阿不都拉􀅰阿巴斯).
2006.Floorlichendiversityunderdifferentvegetationtypesin
TwoGriversourcesNaturalReserveinAltayMountains,Xinjiang
(新疆阿勒泰山两河源自然保护区地面生地衣的物种多样性)
[J].BiodiversSci(生物多样性),14(5):444-450
TumurA(艾尼瓦尔􀅰吐米尔),AbdulaA(阿地力江􀅰阿不都
拉),AbbasA(阿不都拉􀅰阿巴斯).2011.Distributionpattern
offloorlichencommunitiesinSouthern mountainousareaof
Urumqi,Xinjiang,China(乌鲁木齐南部山区地生地衣群落分布
格局)[J].ChinBiodivers(生物多样性),19(5):574-580
WangYL(王玉良),AbdulaA(阿地力江􀅰阿不都拉),TumurA
(艾尼瓦尔􀅰吐米尔),etal.2012.Diversityandcommunity
quantitativecharacteristicsoffloorlicheninYaoluopingNational
NatureReserveofAnhui,China(鹞落坪自然保护区地面生地衣
多样性及群落数量特征)[J].PlantDiversResour(植物分类与
资源学报),34(2):199-207
YangHX(阳含熙),LuZY(卢泽愚).1981.MethodologyofQuanG
titativeTaxonomyinPlantEcology(植物生态学数量分析方法)
[M].Beijing:SciencesPress:90-252
ZeddaL,RamboldG.2009.Diversityandecologyofsoillichensin
theKnersvlakte(SouthAfrica)[J].Bryologist,112:19-29
9823期            王文采:东川铁线莲,云南毛茛科一新种