This name is a synonym of Dioscorea orbiculata var. tenuifolia (Ridl.) Thapyai.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 241022) with original publication details: J. Straits Branch Roy. Asiat. Soc. 41: 34 1904.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:318676-1.
This name was in version 1 of The Plant List, record kew-241022, and has not been changed.