Flora of North America species comparison

slender, 0.8-1.8 mm thick.

never tuberous, sometimes thick and ± fleshy proximally.

erect, 5-22 cm, pilose or occasionally glabrous, each with 3-12 flowers.

erect, not rooting nodally, hirsute or strigose, base not bulbous.

persistent, blades ovate to rhombic, undivided or rarely innermost 3-parted, 1.1-5.3 × 0.9-3.6 cm, base obtuse, margins crenate with 5 crenae, apex rounded.

blades broadly ovate to cordate or sometimes reniform in outline, deeply 3-divided or occasionally 3-foliolate, 2.2-6 × 2.5-7.7(-10) cm, divisions 1-2x deeply parted or -dissected, ultimate segments linear to broadly linear, margins entire (occasionally a lobe reduced to large tooth), apex acute or rounded-acute.

pedicels pilose;

receptacle pilose;

sepals 4-6 × 1.5-3 mm, abaxially pilose, hairs colorless;

petals 5, 6-8 × 2-4 mm;

nectary scale glabrous.

receptacle glabrous;

sepals spreading or variously reflexed, 4-6 × 2-4 mm, appressed-hirsute;

petals 5(-10), yellow, 7-13 × 4-10 mm.

depressed-globose, 4-6 × 5-7 mm;

achenes 1.8-2.2 × 1.2-1.8 mm, glabrous;

beak slender, curved, 0.2-0.3 mm.

hemispheric or globose, 5-8 × 6-8(-10) mm;

achenes 2.2-3.4 × 2-3 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, lanceolate, strongly curved, 0.4-1.6 mm.

= 16.