This name is a synonym of Syzygium propinquum (Guillaumin) J.W.Dawson.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 34694) with original publication details: Bull. Soc. Bot. France 85: 649 1938 publ. 1939.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:592154-1.
This name was in version 1 of The Plant List, record kew-34694, and has not been changed.