Arnica chamissonis (Chamisso Arnica) is a species of perennial herb in the family Asteraceae. They have a self-supporting growth form. They are native to Canada, The Contiguous United States, and Alaska. They have simple, broad leaves and yellow flowers. Flowers are visited by Thricops, Euphydryas anicia, Tharsalea editha, and Dryomyza. Individuals can grow to 2.5 feet.
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