Oreocharis xieyongii,an unusual new species of Gesneriaceae from western Hunan,China  

作　　者：Zhen-Yu Lv Ziyoviddin Yusupov Dai-Gui Zhang Ya-Zhou Zhang Xiao-Shuang Zhang Nan Lin Komiljon Tojibaev Hang Sun Tao Deng 

机构地区：[1]CAS Key Laboratory for Plant Diversity and Biogeography of East Asia,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650204,Yunnan,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Institute of Botany,Academy of Sciences of Uzbekistan,Tashkent 100053,Uzbekistan [4]Key Laboratory of Plant Resources Conservation and Utilization,Jishou University,Jishou 416000,Hunan,China [5]School of Life Sciences,Yunnan Normal University,Kunming 650500,Yunnan,China

出　　处：《Plant Diversity》2022年第2期222-230,共9页植物多样性（英文版）

基　　金：grants from the National Natural Science Foundation of China-Yunnan joint fund to support key projects(U1802232);the Major Program of NSFC(31590823);NSFC(32170215);the Youth Innovation Promotion Association CAS(2019382);the Young Academic and Technical Leader Raising Foundation of Yunnan Province(2019HB039);the Second Tibetan Plateau Scientific Expedition and Research(STEP)program(2019QZKK0502);the CAS"Light of West China"Program。

摘　　要：A new species,Oreocharis xieyongii T.Deng,D.G.Zhang&H.Sun,from Hunan Province,central China,is described.The combination of purple zygomorphic corolla with longer adaxial lobes and exserted stamens defines the species and discriminates it from all other current Oreocharis species.Morphological traits of the new species were compared to those of two similar species,Oreocharis xiangguiensis and 0.rubrostriata.Phylogenetic analysis indicates that the new species is nested within the Oreocharis.Although only half of Oreocharis species were included in our study,evolutionary character analysis indicates that the ancestral states of the genus are likely the purple corolla,longer abaxial lip and inserted stamens.The longer adaxial lip is perhaps an apomorphy and only present in O.xieyongii and O.rubrostriata.Both morphological and molecular evidence suggest that O.xieyongii is a taxon new to science.

关 键 词：China GESNERIACEAE MORPHOLOGY PHYLOGENY TAXONOMY 

分 类 号：Q949[生物学—植物学]