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 ABBCDF12-685F-4B10-B230-17120172B1CF) with original publication details: Rhodora 26 101 1924.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:14812-2.
This name was in version 1 of The Plant List, record gcc-12372.