Glabrous, weak, decumbent to suberect, 0.5–3 dm; lvs compound or deeply divided into 3–7 linear, oblanceolate or elliptic segments 0.5–2 cm; pedicels axillary, at first about equaling the petiole, much longer in fr; sep lance-ovate, 2.5–3 mm at anthesis, to 6 mm at maturity; pet oblanceolate, 1–2 mm; mericarps 2.5 mm, ovoid-globose, warty. Damp woods in rich soil; N.S. and w. Que. to B.C., s. to Del., Tenn., and Calif. Apr., May.