This name is a synonym of Achillea umbellata Sibth. & Sm..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 79BE2D58-0EAE-4C67-8307-3A5D74F4634B).
This name record (from TICA) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Achillea umbellata in version 1 of The Plant List.