This name is a synonym of Artemisia ludoviciana Nutt..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record A7AF8403-77F5-43BA-A2AB-3505B0CDD63F) with original publication details: Rhodora 47 248 1945.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:20677-2.
This name was in version 1 of The Plant List, record gcc-28688.