tooth-wort, or Tooth-violet; a genus of the filiopoda order, belonging to the tetradynamia class of plants. There are three species, all of them hardy perennials; producing annual stalks 12 or 18 inches high, adorned with many-lobed leaves, and spikes of quadrupetal cruciform flowers of a red or purple colour. They delight in shady places; and are propagated either by seeds, or parting the roots. The seeds may be sown in autumn, or early in the spring, in a shady border of light earth; and when the plants are three inches high, they may be planted where they are to remain. The time for parting the roots is in October or November, or early in the spring.

**DENTATED LEAF.** See BOTANY, p. 1296.