Flora of North America species comparison

fleshy and somewhat tuberous.

prostrate, buried, rooting nodally, glabrous, not bulbous-based.

erect or decumbent, not rooting nodally, hirsute to nearly glabrous, base not bulbous.

blades reniform, deeply 3-parted, 1.1-2.6 × 1.6-4.3 cm, segments undivided or 1x cleft, margins crenate, apex rounded.

blades ovate to deltate in outline, 3(-5)-foliolate, 2.5-14.9 × 2.3-19.9 cm, leaflets 1-2x-lobed or -parted, ultimate segments narrowly oblong to elliptic or lanceolate, margins toothed, apex narrowly acute to rounded-acute.

receptacle glabrous;

sepals spreading or reflexed from base, 4-7 × 2-5 mm, glabrous;

petals yellow, 5-6 × 2-3 mm.

receptacle hispid;

sepals reflexed 1-2 mm above base, 5-10 × 3-5 mm, hispid;

petals 11-16, yellow, 8-21 × 2-5 mm.

hemispheric, 5-7 × 8-10 mm;

achenes 3.8-4.2 × 2-2.2 mm, glabrous;

beak persistent, lanceolate, curved, tip hooked, 1.6-2.4 mm.

globose to ovoid, 6-13 × 7-9 mm;

achenes 2.4-3.4 × 2-2.4 mm, glabrous, margin forming rib or narrow wing 0.1-0.4 mm wide;

beak filiform from deltate base, straight, 1.8-2.5 mm, filiform tip often deciduous, leaving 1-1.2 mm deltate beak.

roots absent.

= 16.