Family, Figwort. Color, yellow. Calyx, 2-lobed, the lobes with leafy margins. Corolla, 2-divided, the upper division helmet-shaped, called a galea, deeply arched, nearly meeting the straight, ascending lower lip. Flowers, in crowded, leafy spikes. Stem, simple or branched, 1 to 3 feet high, erect, stout. Leaves, oblong or lance-shaped, 2 to 5 inches long, pin-nately lobed, the lobes sharply toothed. Floral leaves bract-like. A species taller than the common wood betony, which it resembles in both leaves and flower-spikes. August and September.
A swamp species, from Massachusetts to Virginia, westward to Ohio and Nebraska.