This name is a synonym of Antennaria rosea subsp. pulvinata (Greene) R.J.Bayer.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record A1B8215E-AD3F-41D9-A7C3-0F2DD2F72941) with original publication details: Fl. Rocky Mts. 917 1917.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:14563-2.
This name was in version 1 of The Plant List, record gcc-8155.