This name is a synonym of Brassica repanda subsp. maritima (Rouy ex Willk.) Heywood.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym and as an invalid name with original publication details: Suppl. Prodr. Fl. Hispan. 309 1893.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:279309-1.
This name was in version 1 of The Plant List, record kew-2682182, and has not been changed.