This name is a synonym of Alyssum granatense Boiss. & Reut..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100358109) with original publication details: Nouv. Mat. Fl. Atl. 233 1874.
This name was in version 1 of The Plant List, record tro-100358109.