This name is a synonym of Begonia bidentata Raddi.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 361077) with original publication details: Fl. Bras. 4(1): 381 1861.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:30411-2.
This name was in version 1 of The Plant List, record kew-361077.