This name is a synonym of Antennaria rosea subsp. confinis (Greene) R.J.Bayer.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 437ACAEE-E7BE-4B1A-8EF0-67D756D24D39) with original publication details: Canad. Field-Naturalist 64 18 1950.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:14672-2.
This name was in version 1 of The Plant List, record gcc-77886.