Family, Figwort. Color, light purple. Flower, 2-lipped or "labiate," the upper lip cut into 2 divisions, the lower into 3. Flowers in racemes, terminal, or from the leaf-axils, on long, slender pedicels. Leaves, small, numerous, roundish, sessile, some clasping. A plant 6 or 8 inches high, much branched. All summer.
The name means "mud-flower," and reveals its habitat in wet and muddy places. Common in all our Eastern States.