Flora of North America species comparison

sometimes fleshy and ± tuberous.

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

glabrous.

laminate and filiform-dissected; laminate leaf blades reniform, 3-parted, 0.4-1.1 × 0.7-2.3 cm, segments obovate or fan-shaped, shallowly cleft, margins crenate;

filiform-dissected leaves with stipules gradually tapering upward, connate for their whole length.

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 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.

receptacle hispid, rarely glabrous;

sepals spreading or reflexed, 2-4 × 1-2 mm, glabrous;

petals 5, 4-7 × 1-5 mm;

style 0.1-0.8 mm.

usually recurved.

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.

hemispheric to ovoid, 2-4 × 2-5 mm;

achenes 1-2 × 0.8-1.4 mm, glabrous or hispid;

beak persistent, filiform, 0.1-1.2 mm.