Arnica (Asteraceae family) is a hardy herbaceous plant native to the mountains of Europe. This beautiful composite, with orange-yellow solitary flower heads, grows in acidic grassland in mountainous and subalpine areas. When rubbed, it releases a very specific aromatic scent. As a result of an increase in demand for arnica from herbalists, the plant became scarce, and its picking is regulated.

Botanist's Glossary