4.2.9.3. Macropsychanthus scabrus var. schulzii (R.H. Maxwell) L.P. Queiroz & Snak comb. nov.

Basionym: Dioclea scabra var. schulzii R.H. Maxwell, Ann. Missouri Bot. Gard. 77(3): 581. 1990. Type: Guyana, Essequibo, Potaro, Atkinson 116 (holotype: BM! [000931781]; isotypes: NY! [01365181], US).