This name is a synonym of Begonia preussii Warb..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 363386) with original publication details: Bot. Jahrb. Syst. 34: 94 1905.
This name was in version 1 of The Plant List, record kew-363386, and has not been changed.