This name is a synonym of Begonia fischeri Schrank.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 362571) with original publication details: Suppl. Pl. Succ. 100 1819.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:105377-1.
This name was in version 1 of The Plant List, record kew-362571.