This name is a synonym of Magnolia albosericea Chun & C.H.Tsoong.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an invalid name (record 117505) with original publication details: Fl. Indo-Chine Suppl. 1: 39 1938.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:554658-1.
This name was in version 1 of The Plant List, record kew-117505.