Background and aims – The treatment of Uapaca (Phyllanthaceae) for the Flore du Gabon revealed many, hitherto unknown, synonymies and some overlooked names that deserve a separate publication. Advantage is taken of this treatment to establish the geography of the forest species on an African scale. Methods – Normal practices of herbarium taxonomy have been applied to study all herbarium material available, mainly at BM, BR, COI, FHO, G, K, LBV, LISC, LISU, MO, OXF, P (partly), and WAG. Key results – A synoptic revision with key to the nine Uapaca species of the Guineo-Congolian forest region is presented with their synonymies, typifications, (selection of) the examined material and distribution maps. Some morphological features are illustrated to facilitate the use of the key to the species. Two specific names have been neotypified and fifteen lectotypified. Twenty-one specific names have been placed in synonymy.

DISTRIBUTION; GUINEO-CONGOLIAN FOREST REGION; PHYLLANTHACEAE; TAXONOMY; TROPICAL AFRICA; UAPACA