This name is a synonym of Begonia quercifolia A.DC..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 363401) with original publication details: Philipp. J. Sci., C 10: 277 1915.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:106020-1.
This name was in version 1 of The Plant List, record kew-363401, and has not been changed.