This name is a synonym of Antennaria flagellaris (A.Gray) A.Gray.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record CED49B1F-8C47-49E0-9ED1-7E0B6D077113) with original publication details: 366 1874.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:14660-2.
This name was in version 1 of The Plant List, record gcc-56392, and has not been changed.