This name is a synonym of Magnolia cristalensis Bisse.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 335127) with original publication details: Novosti Sist. Vyssh. Rast. 28: 66 1991.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:300772-2.
This name was in version 1 of The Plant List, record kew-335127, and has not been changed.