This name is a synonym of Centaurea phrygia subsp. melanocalathia (Borbás) Dostál.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 32BE0755-E221-49AE-8144-94D98DA237A5) with original publication details: Oesterr. Bot. Z. 39 235 1889.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:190986-1.
This name was in version 1 of The Plant List, record gcc-97875.