Flora of North America species comparison

never tuberous.

slender, 0.4-1 mm thick.

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

erect from short caudices, 3-20 cm, sparsely pilose to glabrous, each with 1-3 flowers.

persistent, blades transversely elliptic to orbiculate, 1-3 × 1-3 cm, base obtuse to nearly truncate, margins crenate or else blades shallowly 3-lobed with crenate lateral lobes, apex rounded or rounded-apiculate.

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 sparsely brown-pilose;

receptacle brown-pilose;

sepals 6-8 × 3-6 mm, abaxially densely brown-hispid;

petals 5(-6), 8-12 × 6-10 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 ovoid-cylindric or ovoid, 6-7(-9) × 5-6 mm;

achenes 1.8-2.2 × 1.4-1.8 mm, glabrous or sparsely brown-hispid;

beak slender, straight or curved, 0.8-1.4 mm.

= 42, ca. 80, ca. 84, 96, ca. 98.