Rhizomes elongate, bearing at each node a solitary stem 1–2 dm and 1(–2) basal lvs; lvs petioled, reniform, deeply 3-parted, the flabellate-obovate segments coarsely crenate to shallowly lobed; cauline lf 1 or none, smaller, short-petioled; fls 8–12 mm wide; sep 3; achene-body oblong, 2–3 mm, turgid below, flattened above; beak slender, sharply curved or hooked; 2n=16. Wet soil; circumboreal, s. in Amer. to n. Me., n. Mich., n. Minn., and B.C. June, July.