This name is a synonym of Magnolia obovata Thunb..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 117647) with original publication details: Abh. Math.-Phys. Cl. Königl. Bayer. Akad. Wiss. 4(2): 187 1845.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:554741-1.
This name was in version 1 of The Plant List, record kew-117647.