This name is a synonym of Begonia poculifera Hook.f..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 362678) with original publication details: Misc. Pap. Landbouwhoogeschool 19: 404 1980.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:874703-1.
This name was in version 1 of The Plant List, record kew-362678.