This name is a synonym of Begonia tonduzii C.DC. ex T.Durand & Pittier.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 360925) with original publication details: Ann. Missouri Bot. Gard. 25: 830 1938.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:30374-2.
This name was in version 1 of The Plant List, record kew-360925, and has not been changed.