"Plants 0.5–4 dm, usually freely branched, rather sparsely strigose or in part hirsute, the petioles coarsely ciliate toward the base; lf-blades to 6 × 5 cm, with wing- margined rachis and mostly 3–6 pairs of rather narrow, entire or few-toothed lateral segments; pedicels mostly under 1 cm at anthesis, sometimes to 5 cm in fruit; cal foliaceous-accrescent, the ovate or lance- ovate lobes veiny and commonly 1 cm at maturity; cor 5–8 mm; seeds mostly 4, 2.5–3 mm; 2n=20. Moist, shaded bottoms and open fields; Mich. and Ind. to Sask. and the w. cordillera; also irregularly near the coast from s. N.Y. to Va. and occasionally adventive elsewhere in our range. May, June. (Nyctelea n.)"