This name is a synonym of Begonia saxicola A.DC..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 362645) with original publication details: Bull. Herb. Boissier II, 1: 315 1901.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:105435-1.
This name was in version 1 of The Plant List, record kew-362645, and has not been changed.