This name is a synonym of Begonia foliosa Kunth.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 361633) with original publication details: Caldasia 4: 192 1946.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:30565-2.
This name was in version 1 of The Plant List, record kew-361633.