This name is a synonym of Dioscorea gracilis Hook. ex Poepp..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 240287) with original publication details: Anales Acad. Chilena Ci. Nat. 1968: 48 1968.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:80865-2.
This name was in version 1 of The Plant List, record kew-240287, and has not been changed.