This name is a synonym of Begonia obliqua L..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 362763) with original publication details: Prodr. Veg. Ind. Occ. 86 1788.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:105520-1.
This name was in version 1 of The Plant List, record kew-362763.