This name is a synonym of Magnolia singapurensis (Ridl.) H.Keng.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 117495) with original publication details: Blumea 32: 376 1987.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:953767-1.
This name was in version 1 of The Plant List, record kew-117495, and has not been changed.