Arcangelisia flava (L.) Merr., Coscinium fenestratum (Gaerth.) Colebr., Fibraurea tinctoria Lour. and Combretum latifolium Blume under the same Thai vernacular name "Khamin khruea" were characterized by the detail pharmacognostic properties. Macro-, Microscopic characters and thin-layer chromatographic patterns of stem including leaf measurements showed the significant differences among these 4 species which can be used for identification. Loss on drying, ash content and extractive value represent the specifications of each species. Moreover, another species of Coscinium has also been studied.
