A common plant in our gardens. It is near a yard high, but of no great beauty. The stalk is round, striated, thick, green and strong. The principal leaves grow from the root; they are long, narrow, and deeply indented, and are of a bluish green, and hairy; those on the stalks are smaller, and have no foot-stalks. The flowers are of the shape of those of dandelion, but they are blue: the seed is winged with down. The flowers grow to the sides of the stalks, not at the tops, as in dandelion. The root is long and brown on the surface; it is full of a milky juice, and white within.
The root is used; an infusion of it opens obstructions; it is good against the jaundice. A decoction of the whole plant, fresh gathered, works powerfully by urine, and is good against the gravel. It also gently promotes the menses.