This name is a synonym of Dioscorea alata L..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 453409) with original publication details: Bull. Écon. Indochine 8: 117 1950.
This name record (from WCSP) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Dioscorea alata in version 1 of The Plant List.