This name is a synonym of Dioscorea warburgiana Uline ex Prain & Burkill.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 239951) with original publication details: Pflanzenr. IV, 43: 291 1924.
This name was in version 1 of The Plant List, record kew-239951, and has not been changed.