This name is a synonym of Dioscorea pyrifolia Kunth.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an invalid name (record 240132) with original publication details: J. Proc. Asiat. Soc. Bengal 10: 33 1914.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:317957-1.
This name was in version 1 of The Plant List, record kew-240132, and has not been changed.