Arnica rydbergii (Rydberg's Arnica) is a species of perennial herb in the family Asteraceae. They are native to The Contiguous United States and Canada. Flowers are visited by Lycaena cupreus snowi, Chlosyne whitneyi, Mead's Sulphur, and Polites sabuleti draco. Individuals can grow to 3 dm.
EOL has data for 10 attributes, including: