This name is a synonym of Begonia sartorii Liebm..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 362938) with original publication details: Mexic. Begon. 12 1852.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:105663-1.
This name was in version 1 of The Plant List, record kew-362938, and has not been changed.