This name is a synonym of Centaurea limbata Hoffmanns. & Link.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 58C8FF0F-723F-42F9-9422-9D1B526A8EBC).
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 limbata in version 1 of The Plant List.