Notes on the genus Ormosia (Fabaceae-Sophoreae) in Thailand

Abstract

Ormosia mekongensis Mattapha, Suddee & Rueangr. is described as a new species and illustrated. Its conservation status is assessed and its distribution is mapped. Three other species, Ormosia grandistipulata Whitmore, O. penangensis Ridl. and O. venosa Baker, are updated for the generic account for the Flora of Thailand: the first could now be fully described, because flowers were found, the latter two are new records for peninsular Thailand.