This name is a synonym of Dianthus pyrenaicus subsp. attenuatus (Sm.) M.Bernal, Laínz & Muñoz Garm..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Trans. Linn. Soc. 2: 301 1794.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:153093-1.
This name was in version 1 of The Plant List, record kew-2763843, and has not been changed.