This name is a synonym of Centaurea pulcherrima var. freynii (Sint.) Wagenitz.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100373989) with original publication details: Bull. Herb. Boissier 3: 472–473 1895.
This name record (from Tropicos) 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 freynii in version 1 of The Plant List.