西藏毛茛属二新种  

Two new species of Ranunculus from Tibet,China

作　　者：王文采[1] WANG Wen-tsai(State Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China)

机构地区：[1]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

出　　处：《广西植物》2019年第9期1139-1142,共4页Guihaia

基　　金：中国科学院植物研究所资助王文采院士科研活动经费项目(110100PZ07)~~

摘　　要：该文描述了发现自中国西藏南部的毛茛科毛茛属二新种,即隆子毛茛(Ranunculus longziensis W.T. Wang)和单根毛茛(R. uniradicatus W. T. Wang)。隆子毛茛(新种)与睫毛毛茛(R. densiciliatus W. T.Wang)在亲缘关系上甚为相近,两者不同的是此新种(隆子毛茛)的茎无毛,叶也无毛,基生叶不分裂,多具5条脉,茎生叶呈披针状条形;单根毛茛(新种)与聂拉木毛茛(R. nyalamensis W. T. Wang)在体态上稍微相似,两者不同的是此新种(单根毛茛)为一年生草本植物,只具一条须根,茎无毛,花瓣呈狭倒卵形,子房被短柔毛。Two species of genus Ranunculus (Ranunculaceae), Ranunculus longziensis and R. uniradicatus are described as new from South Tibet Autonomous Region, China. R. longziensis is closely related to R. densiciliatus W. T. Wang, differing from the latter in its glabrous stems, glabrous leaves, undivided and mostly 5-nerved basal leaves, and lanceolate-linear cauline leaves;and R. uniradicatus is slightly similar in habit to R. nyalamensis W. T. Wang, differing from the latter in its annual habit, a herb with only a single fibrous root, glabrous stems, narrowobovate petals, and puberulous ovaries.

关 键 词：毛茛科 毛茛属 新种 中国西藏 

分 类 号：Q949[生物学—植物学]