Genus Petasites is the scientific name for the species commonly known as butterbur, coltsfoot or sweet coltsfoot. This group of plants belongs to the family Asteraceae and is characterized by large, heart-shaped leaves and small, clustered flowers. In traditional medicine, butterbur has been used to treat migraines, allergies and coughs due to its anti-inflammatory properties. Other synonyms for Genus Petasites include Tussilago, Petasitis, Faba and Cassenia. These plants are found across Europe, Asia and North America and can grow up to 6 feet tall. Despite their usefulness in medicine, they can be invasive and difficult to control in certain areas.