This name is a synonym of Achillea rupestris subsp. calcarea ("Huter, Porta & Rigo") Greuter.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record F7EC9125-B5AD-4050-B5FD-47450CEC7E54) with original publication details: 272 1976.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:876362-1.
This name was in version 1 of The Plant List, record gcc-38411, and has not been changed.