This name is a synonym of Magnolia acuminata (L.) L..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 335124) with original publication details: Prodr. 1: 80 1824.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:149264-2.
This name was in version 1 of The Plant List, record kew-335124.