Arnica montana, also known as wolf's bane, leopard's bane, mountain tobacco and mountain arnica, is a moderately toxic European flowering plant in the daisy family Asteraceae. It is noted for its large yellow flower head. The names 'wolf's bane' and 'leopard's bane' are also used for another plant, aconitum, which is extremely poisonous. Arnica montana is used as an herbal medicine for analgesic and anti-inflammatory purposes, but there is insufficient high-quality clinical evidence for such effects, and it is toxic when taken internally or applied to injured skin. (Source: Wikipedia.org, CC BY-SA)