This name is a synonym of Centaurea dimorpha Viv..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record DA0CFBBC-93D9-4DA9-8DAA-B75D0150D318).
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 dimorpha in version 1 of The Plant List.