This name is a synonym of Ficus glaberrima subsp. siamensis (Corner) C.C.Berg.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Gard. Bull. Singapore 17: 388 1960.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:77087765-1.
This name was in version 1 of The Plant List, record kew-2810554, and has not been changed.