Arnica longifolia (Spearleaf Arnica) is a species of perennial herb in the family Asteraceae. They have a self-supporting growth form. They are native to The Contiguous United States and Canada. They have simple, broad leaves and yellow flowers. Flowers are visited by Clodius Parnassian. Individuals can grow to 0.61 m.
EOL has data for 69 attributes, including: