It's one of the common names of a plant. It is also known as pottery, fatlobe, donkey's foot, ox helmet, horse leg, hat. It belongs to the family Asteraceae and the genus Tussilago, hence the common name. Its scientific name is Tussilago farfara and is synonymous with Petasites fragrans. The term tussilago in Latin, means remedy for cough, which serves to cure cough.
