This name is a synonym of Dioscorea racemosa (Klotzsch) Uline.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 240016) with original publication details: Bol. Soc. Bot. México 21: 6 1957.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:80769-2.
This name was in version 1 of The Plant List, record kew-240016, and has not been changed.