Flora of North America species comparison

never tuberous.

filiform, sometimes enlarged basally, 0.5-1.5 mm thick.

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

erect or nearly erect, 10-60 cm, glabrous, each with 3-50 flowers.

persistent, blades reniform or orbiculate, undivided or sometimes innermost 3-parted or -foliate, 1.4-4.2 × 2-5.2 cm, base shallowly to deeply cordate, margins crenulate to crenate-lobulate, apex rounded to rounded-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 glabrous or nearly so;

receptacle sparsely to very sparsely pilose;

sepals 2.5-4 × 1-2 mm, abaxially glabrous;

petals 5, 1.5-3.5 × 1-2 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, 3-6 × 2.5-5 mm;

achenes 1.4-1.6 × 1-1.5 mm, glabrous;

beak subulate, curved, 0.1-0.2 mm.

= 16.