Piliostigma is a genus of flowering plants in the legume family, Fabaceae. It includes five species of small deciduous trees native to sub-Saharan Africa, the Indian subcontinent, Indochina, Java, the Philippines, and northern Australia. It belongs to the subfamily Cercidoideae and the tribe Bauhinieae. It is dioecious, with male and female flowers on separate plants.
Species Piliostigma comprises the following species:
Piliostigma foveolatum (Dalzell) Thoth. Piliostigma malabaricum (Roxb.) Benth.—purple orchid tree
Piliostigma reticulatum (DC.) Hochst. Piliostigma thonningii (Schum.) Milne-Redh. Piliostigma tortuosum (Collett & Hemsl.) Thoth.
Some other species often placed here are nowadays usually assigned their traditional genus Bauhinia again.
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