This name is a synonym of Dioscorea campestris Griseb..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 239924) with original publication details: Fl. Bras. 3(1): 30 1842.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:80733-2.
This name was in version 1 of The Plant List, record kew-239924, and has not been changed.