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 86A3EAF3-BDD8-4B9C-B5AA-A755497C50D0) 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:20679-2.
This name was in version 1 of The Plant List, record gcc-61524.