The new species and the third Chinese member of Colubrina(C.zhaoguangii,Rhamnaceae)  

作　　者：Jun Hu Wei-Li Liu Hong Jiang Qing Liu Yi Yang 

机构地区：[1]CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization&Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province,Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu,Sichuan,China [2]University of Chinese Academy of Sciences,Beijing,China [3]Laboratory of Subtropical Biodiversity,Jiangxi Agricultural University,Nanchang,Jiangxi,China [4]Research Center of Ecological Sciences,Jiangxi Agricultural University,Nanchang,Jiangxi,China

出　　处：《Ecosystem Health and Sustainability》2022年第1期502-510,共9页生态系统健康与可持续性（英文）

基　　金：This study was supported by the Second Tibetan Plateau Scientific Expedition and Research(STEP)program(2019QZKK0301);National Natural Science Foundation of China(31860167 and 32101234);Wild Plants Sharing and Service Platform of Sichuan Province.

摘　　要：A novel species of Rhamnaceae,Colubrina zhaoguangii,is discovered in Sichuan,China,during the biodiversity investigations of the Second Tibetan Plateau Scientific Expedition and Research.Detailed descriptions and illustrations of the new species are presented herein.To date,the new species is only found in dry-warm river valleys of the Jinsha River basin in the Hengduan Mountains region(HDM).Compared with the other two known Chinese Colubrina species,C.zhaoguangii features by the habit of twisted shrub and tiny leaves with emarginate apex.In morphology,the new species highly resembles C.alluaudii endemic in Madagascar and C.viridis in northwestern Mexico,whereas it is distinguished from these two relatives by its minutely white scales on the leaf blades.The discovery of C.zhaoguangii reminds us again that the bottom region is also important for biodiversity conservation in HDM and should be a flora survey priority.

关 键 词：Colubrina convergent evolution dry-warm river valley Hengduan mountains region STEP program 

分 类 号：Q94[生物学—植物学]