This name is a synonym of Begonia denticulata Kunth.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 361555) 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:30316697-2.
This name was in version 1 of The Plant List, record kew-361555, and has not been changed.