This name is a synonym of Begonia princeae Gilg.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 361874) with original publication details: Bull. Jard. Bot. État 5: 51 1915.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:104865-1.
This name was in version 1 of The Plant List, record kew-361874, and has not been changed.