This name is a synonym of Chionanthus implicatus (Rusby) P.S.Green.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 367374) with original publication details: in Fl. Ecuador 43(155-156): 51 1991.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:960730-1.
This name was in version 1 of The Plant List, record kew-367374, and has not been changed.