This name is a synonym of Magnolia doltsopa (Buch.-Ham. ex DC.) Figlar.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 117565) with original publication details: J. Soc. Imp. Centr. Hort. 3: 476 1857.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:554694-1.
This name was in version 1 of The Plant List, record kew-117565, and has not been changed.