Flora of North America species comparison

never tuberous.

erect or ascending, not rooting nodally, villous, not bulbous-based.

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

blades broadly spatulate in outline, 1-2x-dissected, 0.9-3.8 × 0.5-1.5 cm, segments linear, margins entire, apex obtuse to acuminate.

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 glabrous;

sepals spreading, 3-6 × 1-2 mm, villous;

petals yellow, 3-5 × 1-3 mm.

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.

cylindric, 9-16(-27) × 8-10 mm;

achenes 1.6-2 × 1.8-2 mm, tomentose;

beak persistent, lanceolate, 3.5-4.5 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.

roots absent.

= 14, 32.