This name is a synonym of Gnaphalium montevidense Spreng..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 7B5749CA-5D28-4B40-92F0-0D5568779A48) with original publication details: Opera Bot. 104 147 1991.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:963038-1.
This name was in version 1 of The Plant List, record gcc-7166.