This name is a synonym of Dioscorea cuspidata Humb. & Bonpl. ex Willd..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 11000709) with original publication details: Pflanzenr. 43(Heft 87): 57 1924.
This name was in version 1 of The Plant List, record tro-11000709.