This name is a synonym of Brassica elongata subsp. integrifolia (Boiss.) Breistr..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Fl. Nordostdeut. Flachl. 360 1898.
This name was in version 1 of The Plant List, record kew-2682190, and has not been changed.