Field Marks: The leaves are purplish on the lower surface.
Habitat: Along streams, disturbed soil.
Habit: Annual herb with fibrous roots.
Stems: Erect, branched, smooth or hairy, up to 2 feet tall.
Leaves: Opposite, simple, ovate, pointed at the tip, tapering or rounded at the base, smooth or hairy, usually purplish on the lower surface, up to 5 inches long.
Flowers: Crowded into erect racemes up to 6 inches long; each flower subtended by oval bracts.
Sepals: 5, green, united below, asymmetrical, 2-lipped, hairy.
Petals: 5, purple, united, 2-lipped, usually with equal lobes, up to 1/4 inch long.
Stamens: 4, about as long as the petals.
Pistils: Ovary superior, 4-parted.
Fruits: Nutlets 4, red-brown, veiny, up to 1/12 inch long.
Notes: The leaves have the odor of licorice when crushed.