This name is a synonym of Magnolia liliiflora Desr..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 117796) with original publication details: Bot. Mag. 11: t. 390 1797.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:554822-1.
This name was in version 1 of The Plant List, record kew-117796, and has not been changed.