This name is a synonym of Begonia isoptera Dryand. ex Sm..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 361696) with original publication details: Malayan Misc. 2(7): 15 1822.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:104743-1.
This name was in version 1 of The Plant List, record kew-361696, and has not been changed.