This name is a synonym of Syzygium deplanchei (Guillaumin) J.W.Dawson.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 34682) with original publication details: Sert. Austro-Caledon. 64 1825.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:592142-1.
This name was in version 1 of The Plant List, record kew-34682, and has not been changed.