The genus Bridelia (Euphorbiaceae) in Malesia and Indochina – A regional revision

A taxonomic revision of Bridelia Willd. for Southeast Asia is presented together with comments on the characters used, the biogeography of the species involved and the phytographic history of the genus. Nineteen species are recognised for the region (one from New Guinea was recently described as new). A key and full descriptions are provided. Maps illustrate the distribution of 15 species. Several distributional patterns were found which mainly reflect ecological requirements. The currently accepted infrageneric delimitation (especially on the sectional level) as proposed by Jablonszky (1915) seems no longer to meet the demands of modern taxonomy and is used here only as a handy working tool, but no attempt is undertaken to propose a new one.