This name is a synonym of Begonia timorensis (Miq.) Golding & Kareg..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 360977) with original publication details: Herb. Timor. Descr. 123 1835.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:104201-1.
This name was in version 1 of The Plant List, record kew-360977, and has not been changed.