Flora of North America species comparison

never tuberous.

decumbent or creeping, rooting nodally, hispid to strigose or almost glabrous, base not bulbous.

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

basal leaf blades semicircular or reniform in outline, shallowly 5-7-lobed, 1.2-4.6 × 1.8-6.6 cm, ultimate segments semicircular, margins crenate, apex rounded or weakly apiculate;

cauline leaves 0-2, scalelike.

blades ovate to reniform in outline, 3-foliolate, 1-8.5 × 1.5-10 cm, leaflets lobed, parted, or parted and again lobed, ultimate segments obovate to elliptic or sometimes narrowly oblong, margins toothed, apex obtuse to acuminate.

receptacle hispid or rarely glabrous;

sepals spreading or reflexed from base, 4-7(-10) × 1.5-3(-4) mm, hispid or sometimes glabrous;

petals 5(-150), yellow, 6-18 × 5-12 mm.

receptacle glabrous;

sepals spreading, white or pale yellow, 6-13 × 3-6 mm, glabrous;

petals 8-12, greenish, 2-4 × 0.6-1.6 mm.

globose or ovoid, 5-10 × 5-8 mm;

achenes 2.6-3.2 × 2-2.8 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, lanceolate to lance-filiform, curved, 0.8-1.2 mm.

ovoid, 6-7 × 6-8 mm;

achenes 3.8-4.2 × 0.8-1 mm, canescent;

beak persistent, filiform, 1.2-1.4 mm, hooked distally.

roots absent.

= 14, 32.