This name is a synonym of Begonia kunthiana Walp..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 362189) with original publication details: Index Seminum (B) 1848: 16 1848.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:105098-1.
This name was in version 1 of The Plant List, record kew-362189, and has not been changed.