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.

prostrate to nearly erect, often rooting nodally, hirsute or glabrous, 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.

cordate to reniform in outline, 3-foliolate, 3.7-7.5 × 4.5-9.5 cm, leaflets 3-lobed or -parted, ultimate segments elliptic or lance-elliptic, margins toothed or lobulate, apex acute to broadly acute.

receptacle hispid or glabrous;

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

petals 5, yellow, 2-7 × 1-3 mm.

receptacle hirsute;

sepals spreading or reflexed ca. 1 mm above base, 4-6 × 1.5-3 mm, glabrous or hirsute;

petals 5, yellow, 4-6 × 3.5-5 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.

globose or ovoid, 7-11 × 7-10 mm;

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

beak persistent, lanceolate to broadly lanceolate, straight or nearly so, 1-1.2 mm.

roots absent.

= 16.

= 32, 48.