This name is a synonym of Chionanthus ayresii A.J.Scott.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 355184) with original publication details: Fl. Mauritius 219 1877.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:610756-1.
This name was in version 1 of The Plant List, record kew-355184, and has not been changed.