合柱秋海棠——越南北部喀斯特地区秋海棠科盾叶一新种  

Begonia holostyla,A New Species of Peltate-leaved Begoniaceae from the Karst Region of Northern Vietnam

作　　者：陈文红[1,8,9] 李景秀 NGUYEN Quang-Hieu[3] NGUYEN Sinh-Khang PHAM Van-The 范长丽 向建英 税玉民[1,8,9] CHEN Wenhong;LI Jinxiu;NGUYEN Quang-Hieu;NGUYEN Sinh-Khang;PHAM Van-The;FAN Changli;XIANG Jianying;SHUI Yumin(CAS Key Laboratory for Plant Diversity and Biogeography of East Asia,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming,China 650201;Kunming Botanic Gardens,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming,China 650201;Center for Plant Conservation of Vietnam(CPC),Vietnam Union of Science and Technology Associations,25/32 Lane 191,Lac Long Quan Rd.,Hanoi 100000;Institute of Ecology and Biological Resources,Vietnam Academy of Science and Technology,18 Hoang Quoc Viet Road,Cau Giay,Ha-noi 100000;Laboratory of Ecology and Environmental Management,Science and Technology Advanced Institute,Van Lang University,Ho Chi Minh,Vietnam;Faculty of Technology,Van Lang University,Ho Chi Minh,Vietnam;Yunnan Academy of Biodiversity,Southwest Forestry University,Kunming,China 650224;Karst Conservation Initiative of Yunnan,Kunming,China 650201;Tropical Mountain Forest Eco-station in Southeast Yunnan(TFEY),Pingbian,China 661200)Abstract A new peltate-leaved species of the genus)

机构地区：[1]中国科学院东亚植物多样性与生物地理学重点实验室,中国科学院昆明植物研究所,中国昆明650201 [2]昆明植物园,中国科学院昆明植物研究所,中国昆明650201 [3]植物保育中心,越南科学技术联盟,越南河内 [4]生态与生物资源研究所,越南科学技术部,越南河内 [5]环境管理研究室,高级科技研究所,孙德盛大学,越南胡志明市 [6]技术系,孙德盛大学技术系,越南胡志明市 [7]云南生物多样性研究院,西南林业大学,中国昆明650224 [8]云南省喀斯特地区生物多样性保护研究会,中国昆明650201 [9]滇东南热带山地生态系统定位研究站,中国屏边661200

出　　处：《植物研究》2022年第4期521-527,共7页Bulletin of Botanical Research

基　　金：National Natural Science Foundation of China(31770251,31370228)。

摘　　要：描述了采自越南北部喀斯特地区秋海棠科(Begoniaceae)盾叶一新种,即合柱秋海棠(Begonia holostyla)。该新种在盾形叶和具黑色斑点的果实特征上相似于肿柄秋海棠(B.pulvinifera),但是在合生到一半的花柱和新月形的柱头方面则不同,后者花柱基部合生,柱头2次分裂成1个螺旋状的带。此外,讨论了与近缘种肿柄秋海棠的形态差异和地理联系。A new peltate-leaved species of the genus Begonia(Begoniaceae),B.holostyla,was described andillustrated by photos.The new species was similar to B.pulvinifera in its peltate leaves and black dots on fruits,but differed in its styles combined to a half(vs combined at base),lunate stigma without a spiraled band(vs 2-cleft in a spiraled band).Additionally,the relationship of geographical distribution and morphology with thesimilar species,B.pulvinifera,was discussed.

关 键 词：侧膜组 合生花柱 喀斯特地区 盾叶 越南 

分 类 号：Q949.759.7[生物学—植物学]