This name is a synonym of Antennaria pulcherrima subsp. eucosma (Fernald & Wiegand) R.J.Bayer.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 55AA1219-7946-4ACE-A401-A55E54CDDCE8) with original publication details: Fl. Bor.-Amer. 1: 329 (1834) 329 1834.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:14639-2.
This name was in version 1 of The Plant List, record gcc-61294.