This name is a synonym of Magnolia salicifolia (Siebold & Zucc.) Maxim..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 117567) with original publication details: Bull. Sc. France Belgique 27: 200, 259 1896.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:554696-1.
This name was in version 1 of The Plant List, record kew-117567, and has not been changed.