This name is a synonym of Dioscorea prainiana R.Knuth.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 240059) with original publication details: Fl. Brit. India 6: 293 1892.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:317885-1.
This name was in version 1 of The Plant List, record kew-240059, and has not been changed.