This name is a synonym of Dioscorea asclepiadea Prain & Burkill.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 241164) with original publication details: Pl. Nov. Amami-Ohsim. 14 1928.
This name was in version 1 of The Plant List, record kew-241164, and has not been changed.