This name is a synonym of Artemisia norvegica subsp. saxatilis (Besser) H.M.Hall & Clem..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 1F1CF82B-F614-4ADA-8DC8-EC5C3937E72A) with original publication details: 138 1968.
This name was in version 1 of The Plant List, record gcc-70216.