This name is a synonym of Begonia stipulacea Willd..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 363106) with original publication details: J. Bot. (Schrader) 2: 195 1800.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:105793-1.
This name was in version 1 of The Plant List, record kew-363106, and has not been changed.