a nearly or quite glabrous herb, annual, ascending or decumbent, 1–12 in. long, simple or usually branched at least at the base; upper internodes usually exceeding the leaves; radical leaves rosulate, oblanceolate or obovate, obtuse at the apex, tapering towards the base, pinnatisect, pinnatifid or toothed, 1/8–1 in. long, 1/16– 3/8 in. broad; petiole about as long as or shorter than the blade; upper leaves opposite, verticillate or alternate, oblanceolate or oval, pinnatifid or pinnatipartite, 1/3–1 1/2 in. long, lobes obtuse; peduncles axillary, slender, solitary, 1-flowered, exceeding the leaves, 1–4 1/2 in. long, furrowed; calyx-segments ovate or broadly lanceolate, acuminate, acute, shortly ciliate, green, 1/12– 1/8 in. long, marked at the back with the raised slender midrib; corolla 1/4– 1/2 in. broad, with two pits; stamens 4, all fertile; lower filaments bent at the middle, undivided, with a membranous dilatation; anthers all cohering; capsule ovoid, subglobose, obtuse, somewhat oblique, 1/6– 1/4 in. long. null
