Synonyms
Arnica angustifolia var. eradiata A.Gray
Arnica parryi var. crinita Osterh.
Arnica parryi subsp. genuina Maguire
Arnica sonnei Greene
Arnica foliosa var. sonnei (Greene) Jeps.
Arnica eradiata A.Heller
Arnica parryi subsp. sonnei (Greene) Maguire
Arnica parryi var. sonnei (Greene) Cronquist