This name is a synonym of Begonia laporteifolia Warb..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 361911) with original publication details: Bot. Jahrb. Syst. 38: 261 1906.
This name was in version 1 of The Plant List, record kew-361911, and has not been changed.