an erect herb, annual, glabrous below, puberulous above, branched from the base, 4–18 in. high; stem and branches tetragonous, smooth or nearly so, leafy below; leaves mostly opposite, sometimes fasciculate-verticillate, oblong, lanceolate or linear, obtuse at the apex, somewhat narrowed at the subsessile base or the lower shortly petiolate, mostly denticulate, 1/4–1 1/4 in. long, 1/24– 1/3 in. broad, glabrous; racemes terminal, oblong, few- or many-flowered, 1–2 in. long; bracts alternate, sessile, mostly smaller than the leaves; pedicels rather slender, inserted in the axils of the bracts, 1/8– 1/2 in. long; calyx-segments narrowly elliptical or sublinear, nearly glabrous, 1/10– 1/8 in. long, obtuse; upper corolla-lobes oblong, rounded at the apex, 1/8– 1/4 in. long; lower lip about as long as the upper; palate bearded with very slender hairs; spur conical, prolonged, obtuse, straight or nearly so, 1/8– 1/5 in. long; capsules urceolate oblong, somewhat contracted at the apex, unequally rounded or obtusely narrowed at the base, 1/5– 1/4 in. long, 1/6– 1/5 in. broad; valves subtruncate, apex nearly straight, shortly rounded on the inside edge, scarcely apiculate and very shortly rounded about the outer edge, making a very obtuse angle with that of the other valve. null
