This name is a synonym of Antennaria microphylla Rydb..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 0B2742EE-507F-4485-8D10-BCE97BB071D0) with original publication details: Amer. Midl. Naturalist 58 59 1957.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:14853-2.
This name was in version 1 of The Plant List, record gcc-64241.