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 E07F8309-4C5C-4D6A-AD49-8EB606BDE7A0) with original publication details: 317 1970.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:1009572-2.
This name was in version 1 of The Plant List, record gcc-95188.