This name is a synonym of Dioscorea tokoro Makino ex Miyabe.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 241159) with original publication details: J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 73(Suppl.): 10 1904.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:318801-1.
This name was in version 1 of The Plant List, record kew-241159, and has not been changed.