a perennial herb; stems several from the rootstock, erect or ascending, simple or somewhat branched, subterete or obtusely tetragonous, glabrous or sparingly beset with very short hispid hairs, leafy, rigid, rather slender, 1–1 1/2 ft. high; leaves opposite, simple, tripartite or tridentate from the middle, scabrous, verrucose-lenticellate, whole leaves or the segments linear-filiform, pointed, 1/2–1 in. long; flowers racemose, numerous, purple; pedicels 1-flowered, slender, up to 2/3 in. long, bibracteolate near the apex; bracteoles linear-subulate, 1/12– 1/8 in. long; calyx campanulate, nearly glabrous outside or slightly scabrid or minutely glandular, shortly 5-cleft, 1/6– 1/5 in. long; lobes ovate-deltoid, pointed, woolly-felted within, 1/15– 1/12 in. long; corolla-limb about 1/2 in. in diam.; capsule oval, about 1/6 in. long. null
