This plant grows to a height of about 50 cm. It has a hairy stem on which its leaves are arranged in pairs. It has orange flowers. These flowers should be plucked and dried, and then boiled in a litre of beer. This should be applied to a compress which is wrapped around a bruise. A successful application will cause the bruise to fade within one day. The pollen of the flowers if inhaled will cause uncontrollable sneezing. A phial of arnica carried in a persons pocket is also reputed to help a person quit smoking.