4.1.23. Macropsychanthus malacocarpus (Ducke) L.P. Queiroz & Snak comb. nov.
Basionym: Dioclea malacocarpa Ducke, Arch. Jard. Bot. Rio de Janeiro 3: 170-172. 1922. Type: Brazil, Pará, Belém, Ducke in MG 15808 (lectotype, designated here from the syntypes: MG! [015700]; isolectotypes: BM! [000931774], G! [00364764], RB!, US! [00004611]).