Flora of North America species comparison

never tuberous.

slender, 0.2-0.8 mm thick.

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

erect or nearly erect, 10-50 cm, glabrous, each with 9-40 flowers.

persistent, blades reniform, outer undivided, inner 3-lobed to 3-foliolate, 1-3.5 × 1.5-4.5 cm, base truncate or cordate, margins crenate, apex rounded or obtuse.

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 sparsely pilose;

sepals 2-3 × 1-2 mm, abaxially sparsely hispid, hairs colorless;

petals 5, 1-2 × 0.5-1 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 globose to ovoid, 3-7 × 3-5 mm;

achenes 1.5-2 × 1.4-1.8 mm, glabrous;

beak slender, strongly curved, 0.6-1 mm.

= 16.