This name is a synonym of Daucus carota subsp. halophilus (Brot.) A.Pujadas.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Phytogr. Lusit. Select. ed. 3, 2: 198 1827.
This name was in version 1 of The Plant List, record kew-2758030, and has not been changed.