This name is a synonym of Dioscorea collettii var. hypoglauca (Palib.) S.J.Pei & C.T.Ting.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 241102) with original publication details: Pflanzenr. IV, 43: 315 1924.
This name was in version 1 of The Plant List, record kew-241102.