This name is a synonym of Chionanthus crassifolius var. elegans (Eichler) P.S.Green.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 367398) with original publication details: Anales Jard. Bot. Madrid 50: 200 1992.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:969610-1.
This name was in version 1 of The Plant List, record kew-367398, and has not been changed.