Synonyms
Arnica macillenta Greene
Arnica rivularis Greene
Arnica mollis var. silvatica (Greene) Maguire
Arnica mollis var. scaberrima (Greene) Smiley
Arnica subplumosa var. silvatica (Greene) A.Nelson
Arnica subplumosa Greene
Arnica subplumosa var. macillenta (Greene) A.Nelson
Arnica amplifolia Rydb.
Arnica arachnoidea Rydb.
Arnica confinis Greene
Arnica coloradensis Rydb.
Arnica crocina Greene
Arnica scaberrima Greene
Arnica silvatica Greene