This name is a synonym of Antennaria densifolia A.E.Porsild.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record C4E46E42-A62C-4416-BD1D-90AC1650DFB3) with original publication details: 63 1975.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:176901-1.
This name was in version 1 of The Plant List, record gcc-96031, and has not been changed.