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 DD77B3AC-A452-4AA3-8434-226CDC8E97F4) with original publication details: Naturaliste Canad. 89 284 1962.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:176971-1.
This name was in version 1 of The Plant List, record gcc-18628.