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 917FB8F8-62A8-400A-908D-24BBAD383099) with original publication details: Mem. New York Bot. Gard. 1 413 1900.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:14619-2.
This name was in version 1 of The Plant List, record gcc-19859.