This name is a synonym of Achillea millefolium L..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 667D7476-44AD-4D4B-82CC-11CB0FA15A30) with original publication details: Muhlenbergia 1 61 1904.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:2284-2.
This name was in version 1 of The Plant List, record gcc-9533.