Flora of North America species comparison

never tuberous.

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

erect from short caudex or rhizome, never rooting nodally, hispid, strigose, or glabrous, base not bulbous.

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.

blades pentagonal in outline, deeply 3-5-parted, 1.8-5.2 × 2.7-9.8 cm, segments 1-2x-lobed or -parted, ultimate segments narrowly elliptic or oblong to lanceolate, margins toothed or lobulate, apex acute to rounded.

receptacle glabrous;

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

petals 11-15, yellow, 8-12 × 3-5 mm.

receptacle glabrous;

sepals spreading, 4-6(-9) × 2-5 mm, hispid;

petals 5, yellow, 8-11(-17) × 7-13 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.

globose, 5-7(-10) mm wide;

achenes 2-3 × 1.8-2.4 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, deltate, usually with tip short or long, straight or curved, subulate, 0.2-1 mm.

roots absent.

= 16.

= 14.