This name is a synonym of Centaurea affinis Friv..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 28BCCBB0-1E0C-4B96-8B0D-45CDE4F18AD5).
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 maculosa in version 1 of The Plant List.