This name is a synonym of Magnolia stellata (Siebold & Zucc.) Maxim..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 117666) with original publication details: Amatores Herb. 17: 2 1955.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:60453461-2.
This name was in version 1 of The Plant List, record kew-117666.