This name is a synonym of Dioscorea campanulata Uline ex R.Knuth.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 239918) with original publication details: Notizbl. Bot. Gart. Berlin-Dahlem 7: 189 1917.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:80729-2.
This name was in version 1 of The Plant List, record kew-239918, and has not been changed.