Synonyms
Arnica louiseana var. pilosa Maguire
Arnica louiseana var. mendenhallii (Rydb.) Maguire
Arnica frigida C.A.Mey. ex Iljin
Arnica louiseana subsp. frigida (E.Mey. ex Iljin) Maguire
Arnica mendenhallii Rydb.
Arnica louiseana var. frigida (Iljin) S.L.Welsh