This name is a synonym of Chionanthus foveolatus subsp. major (Verd.) Stearn.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 358352) with original publication details: Bothalia 6: 598 1956.
This name was in version 1 of The Plant List, record kew-358352.