This name is a synonym of Begonia longipetiolata Gilg.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 362238) with original publication details: Bot. Jahrb. Syst. 34: 92 1905.
This name was in version 1 of The Plant List, record kew-362238, and has not been changed.