This name is a synonym of Begonia maculata Raddi.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 361320) with original publication details: Rev. Hort. 47: 89 1875.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:104460-1.
This name was in version 1 of The Plant List, record kew-361320, and has not been changed.