This name is a synonym of Dioscorea saxatilis Poepp..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 240397) with original publication details: Mem. Reale Accad. Sci. Torino 39: 11 1836.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:318187-1.
This name was in version 1 of The Plant List, record kew-240397, and has not been changed.