Flora of North America species comparison

never tuberous.

erect, never rooting nodally, hispid, base not bulbous.

erect from short caudices, not rooting nodally, glabrous, not bulbous-based.

blades broadly cordate in outline, 3-foliolate, 1.6-7 × 3-9 cm, leaflets cleft, usually deeply so, ultimate segments narrowly elliptic, margins toothed, apex acute.

blades circular to reniform in outline, 3-5-parted, 0.8-3.8 × 1.7-6.9 cm, segments again lobed, ultimate segments elliptic or oblong, margins crenate, apex rounded;

cauline leaf 0-1, scalelike.

receptacle hirsute;

sepals reflexed ca. 1 mm above base, 3-5 × 1.5-2 mm, ± hispid;

petals 5, yellow, 2-4 × 1-2.5 mm.

receptacle glabrous;

sepals spreading, yellow, 7-11 × 4-7 mm, glabrous;

petals 11-15, yellow, 8-12 × 3-5 mm.

cylindric, 9-12 × 5-7 mm;

achenes 1.8-2.8 × 1.6-2 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, broadly lanceolate or nearly deltate, straight or nearly so, 0.6-0.8 mm.

hemispheric or spheric, 7-8 × 9-10 mm;

achenes 2.4-4.6 × 1.2-2.2 mm, glabrous;

beak persistent, filiform, hooked distally, 1-1.8 mm.

roots absent.

= 16.

= 16.