This name is a synonym of Dioscorea nipensis R.A.Howard.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 240396) with original publication details: Cat. Pl. Cub. 251 1866.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:318186-1.
This name was in version 1 of The Plant List, record kew-240396, and has not been changed.