This name is a synonym of Centaurea jacea subsp. gaudinii (Boiss. & Reut.) Gremli.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 6A88C231-12BE-47DC-8B01-6F4DFD421C28) with original publication details: "Rouy, Fl. France 9. 1905." 121 1905.
This name was in version 1 of The Plant List, record gcc-54596.