This name is a synonym of Cestrum elegans (Brongn. ex Neumann) Schltdl..
The record derives from WCSP (in review)
(data supplied on 2012-03-26)
which reports it as a synonym with original publication details: Stand. Cycl. Hort. 2: 727 1914.
This name was in version 1 of The Plant List, record kew-2713454, and has not been changed.