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植物研究 ›› 2022, Vol. 42 ›› Issue (4): 521-527.doi: 10.7525/j.issn.1673-5102.2022.04.001

• 植物分类学 •    下一篇

合柱秋海棠——越南北部喀斯特地区秋海棠科盾叶一新种

  

  1. 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
  • 收稿日期:2021-09-22 出版日期:2022-07-20 发布日期:2022-07-15

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

Wenhong CHEN1,8,9, Jinxiu LI2, Quang-Hieu NGUYEN3, Sinh-Khang NGUYEN4, Van-The PHAM5,6, Changli FAN1,8,9, Jianying XIANG7, Yumin SHUI1,8,9()   

  1. 1.CAS Key Laboratory for Plant Diversity and Biogeography of East Asia,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming,China 650201
    2.Kunming Botanic Gardens,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming,China 650201
    3.Center for Plant Conservation of Vietnam(CPC),Vietnam Union of Science and Technology Associations,25/32 Lane 191,Lac Long Quan Rd. ,Hanoi 100000
    4.Institute of Ecology and Biological Resources,Vietnam Academy of Science and Technology,18 Hoang Quoc Viet Road,Cau Giay,Hanoi 100000
    5.Laboratory of Ecology and Environmental Management,Science and Technology Advanced Institute,Van Lang University,Ho Chi Minh,Vietnam
    6.Faculty of Technology,Van Lang University,Ho Chi Minh,Vietnam
    7.Yunnan Academy of Biodiversity,Southwest Forestry University,Kunming,China 650224
    8.Karst Conservation Initiative of Yunnan,Kunming,China 650201
    9.Tropical Mountain Forest Eco-station in Southeast Yunnan (TFEY),Pingbian,China 661200
  • Received:2021-09-22 Online:2022-07-20 Published:2022-07-15
  • Contact: Yumin SHUI E-mail:ymshui@mail.kib.ac.cn
  • About author:CHEN Wenhong(1975―),female,associate professor,major in taxonomy of plants.
  • Supported by:
    National Natural Science Foundation of China(31770251)

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。

关键词: 侧膜组, 合生花柱, 喀斯特地区, 盾叶, 越南

Abstract:

A new peltate-leaved species of the genus Begonia(Begoniaceae), B. holostyla, was described and illustrated 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 the similar species, B. pulvinifera, was discussed.

Key words: Begonia sect. Coelocentrum, combined style, karst regions, peltate leaves, Vietnam

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