This name is a synonym of Acnistus arborescens (L.) Schltdl..
The record derives from WCSP (in review)
(data supplied on 2012-03-26)
which reports it as a synonym with original publication details: Nomencl. Bot. ed. 2, 1: 170 1840.
This name was in version 1 of The Plant List, record kew-2665987.