Annual herbs, 1-2 ft in height. Branches 4 angled, young branched purplish. Leaves elliptic, toothed along margins, clothed with white hairs. Pedicel of flower equal or longer than calyx, lower calyx lip teeths longer than upper lip. Corolla purple, two lipped, upper lip hairy on outer side. Stamens exerted out of mouth. Seeds or nutlets, not mucilagenous when wetted.