This name is a synonym of Begonia barkeri Knowles & Westc..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 362613) with original publication details: Index Seminum (PAD) 1847: 4 1847.
This name was in version 1 of The Plant List, record kew-362613.