This name is a synonym of Daucus carota subsp. maximus (Desf.) Ball.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Mém. Soc. Sci. Nat. Cherbourg IV, 38: 405 1912.
This name was in version 1 of The Plant List, record kew-2757962.