Flora of North America species comparison

never tuberous.

dimorphic, flowering stems erect or ascending, stolons prostrate, rooting nodally, glabrous or sparsely hirsute, not bulbous-based.

erect or decumbent, sometimes rooting nodally, hispid or strigose, base not bulbous.

simple and undivided, blades oblong to cordate or circular, 0.7-3.8 × 0.8-3.2 cm, base rounded to cordate, margins crenate or crenate-serrate, apex rounded.

ovate to deltate in outline, 3-foliolate or outer blades merely 3-parted, 2-13.4 × 2.4-16.8 cm, leaflets undivided to lobed or parted, ultimate segments narrowly elliptic or oblanceolate to circular, margins toothed, apex acuminate to rounded.

receptacle hispid or glabrous;

sepals spreading, 2.5-6 × 1.5-3 mm, glabrous;

petals 5, yellow, 2-7 × 1-3 mm.

receptacle hispid;

sepals spreading or reflexed, 4-10 × 2-5 mm, hispid;

petals 5, yellow, 8-16 × 3-9 mm.

long-ovoid or cylindric, 6-12 × 4-5(-9) mm;

achenes 1-1.4(-2.2) × 0.8-1.2 mm, glabrous;

beak persistent, conic, straight, 0.1-0.2 mm.

hemispheric to short-ovoid, 6-10 × 7-10 mm;

achenes 2.2-5.2 × 2-3.8 mm, glabrous, margin forming narrow rib or broad wing 0.1-1.2 mm wide;

beak persistent, lance-subulate, straight or somewhat curved, 0.8-2.6 mm.

roots absent.

= 16.