This name is a synonym of Dianthus giganteus subsp. banaticus (Heuff.) Tutin.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Exsicc. (Herb. Norm.) 1894: 3018 1894.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:153107-1.
This name was in version 1 of The Plant List, record kew-2763863, and has not been changed.