This name is a synonym of Centaurea scabiosa subsp. grinensis (Reut.) Nyman.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record C09D063C-C2E7-4E6C-9052-556FFEF373F4).
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 grinensis in version 1 of The Plant List.