Flora of North America species comparison

sometimes fleshy and ± tuberous.

erect from short caudices, not rooting nodally, glabrous, not bulbous-based.

nearly erect or decumbent, never rooting nodally, hispid, strigose, or glabrous, base not bulbous.

blades circular to reniform in outline, 3-5-parted, 0.8-3.8 × 1.7-6.9 cm, segments again lobed, ultimate segments elliptic or oblong, margins crenate, apex rounded;

cauline leaf 0-1, scalelike.

blades narrowly ovate to oblong or semicircular in outline, simple to 3-5-lobed or -foliolate, 2.8-12.5 × 2.5-14 cm, leaflets or segments undivided or 1-2x-lobed or -parted, ultimate segments circular to linear, margins dentate, crenate, or entire, apex rounded to narrowly acute.

receptacle glabrous;

sepals spreading, yellow, 7-11 × 4-7 mm, glabrous;

petals 11-15, yellow, 8-12 × 3-5 mm.

receptacle hispid;

sepals reflexed 1-2 mm above base, 5-11 × 2-4 mm, hispid, hirsute, or glabrous;

petals 5-6, abaxially yellow or red, adaxially yellow, 8-18 × 4-11 mm.

hemispheric or spheric, 7-8 × 9-10 mm;

achenes 2.4-4.6 × 1.2-2.2 mm, glabrous;

beak persistent, filiform, hooked distally, 1-1.8 mm.

hemispheric to ovoid, 5-13 × 6-10 mm;

achenes 2.8-4.5 × 1.8-3.2 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, narrowly lanceolate to subulate, straight, 1.8-3.8(-4.8) mm.

roots absent.

= 16.