This name is a synonym of Dioscorea modesta Phil..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 240642) with original publication details: Anales Univ. Chile 93: 8 1896.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:80987-2.
This name was in version 1 of The Plant List, record kew-240642, and has not been changed.