TUSSILAGO, in botany, a genus of the synogenesia polygonia superba class. The receptacle is naked; the papus is simple; the scales of the calix are equal, and somewhat membranaceous. There are nine species, three of them natives of Britain, viz. the farfara, or common colt's foot; the hybrida, or long-stalked butter-bur; and the petasitis, or common butter-bur.
The common colt's foot stands recommended in coughs, and other disorders of the breast and lungs.