Flora of North America species comparison

thickened basally, glabrous.

never tuberous.

erect or ascending, never rooting nodally, glabrous.

erect to decumbent, never rooting nodally, hirsute, pilose, or glabrous, base not bulbous.

basal leaf blades with base obtuse to cordate;

proximal cauline leaf blades semicircular to cordate or ovate, 1.2-5.1 × 1.5-2.9 cm, base cordate to broadly obtuse, margins entire or crenulate, apex broadly acute to rounded.

blades ovate to narrowly ovate in outline, 3-parted or -foliolate, 3.3-9.5 ×3.5-9.4 cm, leaflets or segments 1-3x-lobed, ultimate segments ovate or oblong-ovate to lanceolate, margins toothed, apex acute or obtuse.

bracts narrowly elliptic to ovate or lanceolate.

receptacle glabrous or hispidulous;

sepals 4-5, spreading or reflexed from base, 3-5 × 2-4 mm, glabrous;

petals 5-6, 4-9 × 2-5 mm;

nectary scales glabrous.

receptacle glabrous;

sepals reflexed 1-2 mm above base, 3-8 × 2-4 mm, hirsute;

petals 5-17, yellow, 6-12 × 3-6 mm.

hemispheric, 3 × 4-5 mm;

achenes 1.6-1.8 × 1.2 mm, glabrous;

beak lance-subulate, straight, 0.2-1 mm.

hemispheric to globose, 6-9 × 7-10 mm;

achenes 3.4-4.4 × 2.4-3.6 mm, glabrous or rarely hispid, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, deltate or lance-deltate, curved, 0.2-1.2 mm.