Monographs Details: Pithecellobium aquaticum (Pittier) R.S.Cowan
Authority: Maguire, Bassett & Wurdack, John J. 1961. The botany of the Guayana Highland--part IV (2). Mem. New York Bot. Gard. 10: 1-87.

Macrosamanea aquatica Pittier, Bol. Soc. Venez. Ci. 11:15. 1950.

Four recent collections have been referred to this species (Maguire et al. 36204, 36253; Wurdack & Adderley 42732; Level 70) ; all are from the San Fernando de Atabapo region, just up-river from the type locality. Since the generic name under which Pittier published his new species is not generally accepted, it seems advisable to provide the combination under Pithecellobium.