TITLE	Phylogenetics of Bauhinia subgenus Phanera (Leguminosae: Caesalpinioideae) based on ITS sequences of nuclear ribosomal DNA
AUTHOR	Gang Hao South China Institute of Botany, The Chinese Academy of Sciences, Guangzhou 510650, P. R. China Dian-Xiang Zhang* South China Institute of Botany, The Chinese Academy of Sciences, Guangzhou 510650, P. R. China Ming-Yong Zhang South China Institute of Botany, The Chinese Academy of Sciences, Guangzhou 510650, P. R. China Li-Xiu Guo South China Institute of Botany, The Chinese Academy of Sciences, Guangzhou 510650, P. R. China Shi-Jin Li South China Institute of Botany, The Chinese Academy of Sciences, Guangzhou 510650, P. R. China
FULL TEXT	[in HTML format] [in PDF format]
ABSTRACT	The pantropical legume genus Bauhinia is currently subdivided into four subgenera. Subgenus Phanera, with ca. 150 species, is the largest. A parsimony analysis was conducted on ITS sequence data from 38 species, with representatives from all four subgenera, and species sampled from nine of 11 sections of subgen. Phanera, and including two Cercis species as the outgroup. The well-resolved strict consensus tree suggests that subgen. Phanera and the monotypic subgen. Barklya together form a monophyletic group. In the Phanera-Barklya clade, the African (sect. Tylosema), American (sect. Caulotretus), and Australasian (subgen. Barklya, subgen. Phanera sect. Lysiphyllum) species are the first (paraphyletic) lineages, while the Asian taxa (except species of sect. Lysiphyllum) form a monophyletic group. The ITS tree also revealed that sects. Phanera and Lasiobema are not monophyletic. Monophyletic groups supported by the phylogenetic analysis include ser. Fulvae and ser. Corymbosae of sect. Phanera, sect. Tubicalyx, and the Asian-Australasian sect. Lysiphyllum.
KEYWORD	Bauhinia; Caesalpinioideae; ITS; Leguminosae; Phylogenetic analysis; subgen. Phanera;
ARTICLE INFO	Botanical Bulletin of Academia Sinica, Volume 44 Number 3 July 2003, page 223-228, 6 pages
PUBLISHER	Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan, Republic of China