This name is a synonym of Begonia sarmentosa L.B.Sm. & Wassh..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 361501) with original publication details: Leafl. Philipp. Bot. 7: 2554 1915.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:104608-1.
This name was in version 1 of The Plant List, record kew-361501, and has not been changed.