This name is a synonym of Magnolia sumatrana (Miq.) Figlar & Noot..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 252907) with original publication details: Blumea 49: 95 2004.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:60433080-2.
This name was in version 1 of The Plant List, record kew-252907.