This name is a synonym of Dioscorea elephantipes (L'Hér.) Engl..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 267913) with original publication details: Sert. Angl. 29 1789.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:318931-1.
This name was in version 1 of The Plant List, record kew-267913, and has not been changed.