This name is a synonym of Begonia muricata Blume.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 363377) with original publication details: Exkurs.-Fl. Java 2: 642 1912.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:105997-1.
This name was in version 1 of The Plant List, record kew-363377, and has not been changed.