This name is a synonym of Centaurea josiae Humbert.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record A14B41FF-1785-42BD-93EE-1532BF80EB21).
This name record (from TICA) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Centaurea josiae in version 1 of The Plant List.