网叶马铃苣苔（苦苣苔科）的重新发现以及花的补充描述

编辑：张德纯创建于2018-12-19 09:47:57 NSII维基文档系统

文章来源：广西植物 （Guihaia）

摘要:花部形态是马铃苣苔属属下划分和种间界定的关键性状，缺乏花器官的描述直接导致了一些存疑物种的存在。网叶马铃苣苔（Oreocharis rhytidophylla C. Y. Wu ex H. W. Li）自1956年最后被采集到并于1983年发表，由于没有花的特征，在《中国植物志》、《中国苦苣苔科植物》和“Flora of China”均存疑，但该种在随后的60余年间再无相关的采集记录。经过多年的跟踪调查，2017年作者在其模式产地重新发现并采集了带花的凭证标本。根据已经采集到具花标本，我们确定这个种是个自然种，并基于新收集到的材料，补充描述了花的形态特征。网叶马铃苣苔的重新发现为探索其系统位置提供了重要的依据。

ABSTRACT:The flower morphological is a key trait for sub-division and inter-species definition of the Oreocharis. Oreocharis rhytidophylla C. Y. Wu ex H. W. Li was last collected in 1956 and published in 1983, the species has no relevant collection records for the next 60 years. Due to the lack of flower morphological, there are doubts in “Flora of reipublicae popularis sinicae”, “Plants of Gesneriaceae in China” and “flora of China”. After years of follow-up investigation, Oreocharis rhytidophylla C. Y. Wu ex H. W. Li was rediscovered in 2017 in it type locality. Due to the availability of the flowers during the rediscovery, we confirmed that the species should be considered as a natural species instead of doubtful one. The floral morphology of Oreocharis rhytidophylla C. Y. Wu ex H. W. Li was supplemented based on the recent collections and photos. Its rediscovery provided an opportunity to explore its systematic position in the context of phylogeny in the future.

图1. 网叶马铃苣苔的模式标本（KUN 0484429）

图2. 网叶马铃苣苔（郭世伟摄）.

A. 地貌；B. 生境；C. 植株；D. 叶片正面；E. 叶片背面；F.正面叶尖；G. 花冠侧面观，花萼和光滑的花冠；H. 剖开的花冠，展示花冠内部（花丝: fi; 退化雄蕊: st）；I. 背面叶尖；J. 雌蕊和花盘（雌蕊: pi; 花盘:di）； K. 幼雌蕊；L. 花冠正面观展示背侧离生的两雄蕊和正面和生的雄蕊（花药: an）. 标尺D, E=3 cm; F, G, H, I, J=2 cm; K, L=1 cm.