This name is a synonym of Magnolia gigantifolia (Miq.) Noot..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 201425) with original publication details: J. Straits Branch Roy. Asiat. Soc. 85: 172 1922.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:555167-1.
This name was in version 1 of The Plant List, record kew-201425, and has not been changed.