This name is a synonym of Chionanthus rupicolus (Lingelsh.) Kiew.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 353965) with original publication details: Bot. Jahrb. Syst. 61: 9 1927.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:610335-1.
This name was in version 1 of The Plant List, record kew-353965, and has not been changed.