This name is a synonym of Agoseris heterophylla (Nutt.) Greene.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record B15996AF-7D7A-4872-AFB5-A1D4614F004A) with original publication details: Pittonia 2 179 1891.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:7253-2.
This name was in version 1 of The Plant List, record gcc-60859.