This name is a synonym of Achillea barrelieri subsp. mucronulata (Bertol.) Heimerl.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 2FDDEF7E-9532-44C3-A1F8-39F7B2868AE2) with original publication details: 15 1855.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:174123-1.
This name was in version 1 of The Plant List, record gcc-31297.