Flora of North America species comparison

never tuberous.

slender, 0.6-1.2 mm thick.

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

erect, 5-33 cm, pilose or glabrous, each with 3-7 flowers.

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.

persistent, blades ovate, obovate or orbiculate, rarely reniform, undivided or innermost with 2 clefts or partings near apex, 1-3.7 × 1.1-3.5 cm, base acute to rounded, margins entire, apex rounded.

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.

pedicels appressed-pubescent;

receptacle pilose or glabrous;

sepals 3-5 × 2-3 mm, abaxially pilose, hairs colorless;

petals 5, 4-9 × 2-5 mm;

nectary scale glabrous.

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.

cylindric, 7-17 × 5-8 mm;

achenes 1.5-2 × 1.3-1.8 mm, canescent or glabrous;

beak subulate, straight or hooked, 0.4-2 mm.

= 14, 32.