This is a weed in all civilized parts of the world, growing in meadows, fields, and waste places. It has a thick, deep, bitter root, a tuft of root-leaves, slashed into toothed lobes, and several hollow flower-stalks, from two to eighteen inches tall, each bearing a single, handsome, bright yellow flower, from one to two inches across, which is succeeded by a beautiful silvery seed puff. This plant has many common names, such as Blow-ball, Monk's-head, Lion's-tooth, etc. There are a great many kinds of Crepis, natives of the northern hemisphere.