How complicated and interesting taxonomy is?—Implications from the phylogenetic positions of Penkimia and Ascocentrum(Orchidaceae:Vandeae,Aeridinae)

作     者：Xiaoguo Xiang,Xiaohua Jin~*,Hailang Zhou,Weitao Jin,Yangjun Lai (Herbarium & State Key Laboratory of Systematic and Evolutionary Botany,Chinese Academy of Sciences, Beijing 100093,China) 

会议名称：《后植物志时代的系统与进化植物学——2011年全国系统与进化植物学暨第十届青年学术研讨会》

会议日期：2011年

学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 

摘      要：The orchid subtribe,Aeridinae,is notorious for its taxonomic confusion due to both convergence and divcrgence in floral and vegetative *** generic delimitation of Holcoglossum-Vanda alliance is one of taxonomicblack-boxes. Aim to understand the systematic positions of Penkimia and Ascocentrum,two little known genera of Holcoglossum-Vanda alliance,we employed nuclear ITS and extensive sampling including 55 species of