This name is a synonym of Begonia heracleifolia Cham. & Schltdl..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 3400868) with original publication details: Prodr. 15(1): 335 1864.
This name was in version 1 of The Plant List, record tro-3400868.