This name is a synonym of Dioscorea dugesii C.B.Rob..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 241139) with original publication details: Bot. Jahrb. Syst. 22: 423 1896.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:81158-2.
This name was in version 1 of The Plant List, record kew-241139, and has not been changed.