This name is a synonym of Syzygium kemamanense (M.R.Hend.) I.M.Turner.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 75591) with original publication details: Gard. Bull. Singapore 11: 303 1947.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:594788-1.
This name was in version 1 of The Plant List, record kew-75591, and has not been changed.