Genus Arnica is a group of flowering plants that belongs to the family Asteraceae. Commonly known as arnicas, these small perennial herbs are native to mountainous areas of Europe and North America. Many of these plants are known for their medicinal properties. Some synonyms of the genus Arnica include leopard's bane, mountain tobacco, and wolf's bane. These monikers reflect the plants' traditional use as herbal remedies for various ailments, including pain and inflammation. Arnica montana, the most well-known species of the genus, is used in homeopathic treatments and is a popular ingredient in creams and ointments to alleviate muscle soreness and bruises.