This name is a synonym of Gnaphalium pensylvanicum Willd..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record CBDC8E41-F4EC-48FF-9CA0-10C54EB52605) with original publication details: Bol. Soc. Argent. Bot. 9 375 1961.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:107375-2.
This name was in version 1 of The Plant List, record gcc-8964.