This name is a synonym of Chionanthus calcicola (Kerr) Kiew.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 353884) with original publication details: Bull. Misc. Inform. Kew 1938: 129 1938.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:610176-1.
This name was in version 1 of The Plant List, record kew-353884, and has not been changed.