A synoptic revision of the Malagasy endemic genus Calantica Jaub. ex Tul. (Salicaceae)

A synoptic revision of the Malagasy endemic genus Calantica Jaub. ex Tul. is presented. Ten species are recognized, of which seven are threatened. Three species are newly described: C. olivacea Appleq., Phillipson & G. E. Schatz, sp. nov., C. pseudobiseriata Appleq., Phillipson & G. E. Schatz, sp. nov., and C. sphaerocephala Appleq., Phillipson & G. E. Schatz, sp. nov. An identification key to the species of Calantica is provided.