Flora of North America species comparison

never tuberous.

slender, 0.5-1 mm thick.

erect or ascending, never rooting nodally, crisped-pilose, base not bulbous.

erect or decumbent from short caudices, 3-22 cm, glabrous, each with 1-5 flowers.

persistent, blades cordate or reniform, 3-parted, 0.5-1.8 × 0.8-3 cm, segments again lobed, base truncate or nearly cordate, apices of segments rounded.

broadly rhombic to semicircular in outline, 3-parted, 2.8-4.3 × 3-5.5 cm, segments 3-lobed, ultimate segments lanceolate, margins entire or toothed, apex narrowly acute or acuminate.

receptacle glabrous;

sepals reflexed 1 mm above base, 4-6 × 1.5-3 mm, densely pilose;

petals 5, abaxially red, adaxially yellow, 10-12 × 4-6 mm.

pedicels pubescent or glabrous;

receptacle glabrous or pubescent;

sepals 3-5 × 1-4 mm, pubescent or glabrous;

petals 5, 3-6 × 1-5 mm;

nectary scale glabrous.

of achenes hemispheric, 4-7 × 7-10 mm;

achenes 3.4-4.2 × 2.8-3.2 mm, sometimes basally pilose, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, lance-subulate, straight or somewhat curved distally, 1.6-2.6 mm.

of achenes cylindric to ovoid-cylindric, 4-13 × 4-6 mm;

achenes 1.2-2.4 × 0.8-2 mm, glabrous;

beak subulate, curved or hooked, 0.4-0.8 mm.

= 16.