TITLE Begonia liuyanii (sect. Coelocentrum, Begoniaceae), a new species from limestone areas in Guangxi, China
AUTHOR Ching-I PENG
Herbarium, Research Center for Biodiversity, Academia Sinica, Nangang, Taipei 115, Taiwan
Shin-Ming KU
Herbarium, Research Center for Biodiversity, Academia Sinica, Nangang, Taipei 115, Taiwan
Shin-Ming KU
Herbarium, Research Center for Biodiversity, Academia Sinica, Nangang, Taipei 115, Taiwan
Wai-Chao LEONG
Herbarium, Research Center for Biodiversity, Academia Sinica, Nangang, Taipei 115, Taiwan
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ABSTRACT Begonia liuyanii, a new species of sect. Coelocentrum from limestone areas in southwestern Guangxi Zhuang Autonomous Region, China, is described and illustrated. A somatic chromosome number of 2n = 30 was determined. Begonia liuyanii is similar to B. filiformis in having small flowers and glandular-hispid inflorescences but is distinguishable by its larger leaves (16-38 × 12-32 cm vs. 9-22 × 9-14 cm), sparsely setose (vs. tomentose) upper surface of the leaves, maculation absent (vs. with white maculation in intercostal area on adaxial leaf surface), and usually thyrsoid (vs. cymose) inflorescence.
KEYWORD Begonia filiformis; Begonia liuyanii; Begonia masoniana; Begoniaceae; China; Chromosome number; Guangxi; Limestone flora; New species; Rare species; sect. Coelocentrum;
ARTICLE INFO Botanical Bulletin of Academia Sinica, Volume 46 Number 3 July 2005, page 245-254, 10 pages
PUBLISHER Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan, Republic of China