This name is a synonym of Begonia incarnata Link & Otto.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 362335) with original publication details: Fl. Mag. (London) n.s., 1876: t. 197 1876.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:105191-1.
This name was in version 1 of The Plant List, record kew-362335, and has not been changed.