This name is a synonym of Gutierrezia microcephala (DC.) A.Gray.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 530BF65F-8DBA-42B6-B577-140DA2DB4324) with original publication details: Pittonia 4 54 1899.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:115017-2.
This name was in version 1 of The Plant List, record gcc-10723, and has not been changed.