Begonia wui-senioris (sect. Platycentrum, Begoniaceae), a new species from Myanmar

被引：25
|
作者：
Peng, Ching-I [1 ]
Wang, Hong [2 ]
Kono, Yoshiko [1 ]
Yang, Hsun-An [1 ]
机构：
[1] Acad Sinica, Biodivers Res Ctr, Herbarium HAST, Taipei 115, Taiwan
[2] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Mengla 666303, Peoples R China
来源：
BOTANICAL STUDIES | 2014年 / 55卷
关键词：
Begonia wui-senioris; Begoniaceae; Chromosome number; Limestone; Myanmar; New species; Sect; Platycentrum;
D O I：
10.1186/1999-3110-55-13
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
The flora of Myanmar is under-collected compared with all other tropical Asian countries. An unknown Begonia was grown from seeds collected from a limestone hill in Central Myanmar, and compared with potentially allied species. The unknown Begonia is rhizomatous, has peltate leaves, 2-locular ovaries, and is evergreen. It is clearly assignable to sect. Platycentrum. Only two other species of Begonia, B. josephii and B. subperfoliata, in Myanmar have peltate leaves, but they are deciduous tuberous plants with 3-locular ovaries and belong to sect. Diploclinium. Thorough studies of literature and herbarium materials support the recognition of a new species, Begonia wui-senioris, which is fully described and illustrated. Begonia wui-senioris has the lowest chromosome number (2n = 14) for the genus.
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页数：6
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