This name is a synonym of Begonia lemaoutii Vallerand.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as a spelling variant (record 362098) with original publication details: Ill. Hort. 36: 111 1889.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:105019-1.
This name was in version 1 of The Plant List, record kew-362098.