Flora of North America species comparison

slender, 0.8-1.4 mm thick.

never tuberous.

erect from large caudices, 9-25 cm, glabrous, each with 1-3 flowers.

erect, never rooting nodally, hirsute, base not bulbous.

persistent, blades circular to reniform in outline, 2-3x-dissected into linear segments, 0.9-2.5 × 1.1-2.8 cm, base obtuse, margins entire, apices of segments narrowly rounded to acute.

blades cordate to reniform in outline, 3-parted, 1.3-3 × 1.8-3.8 cm, segments cleft, ultimate segments elliptic to lanceolate, margins toothed, apex acute.

pedicels glabrous;

receptacle glabrous;

sepals 4-11 × 3-7 mm, abaxially sparsely pilose, hairs colorless;

petals 5-10, 8-15 × 8-19 mm;

nectary scale glabrous.

receptacle glabrous;

sepals spreading, 7-9 × 2-4 mm, hirsute;

petals 5, yellow, 10-15 × 8-11 mm.

ovoid, 6-12 × 5-9 mm;

achenes 1.8-2.4 × 1-1.4 mm, glabrous or nearly so;

beak subulate, straight, 1.2-1.7 mm.

nearly globose, 7-10 mm wide;

achenes 2.4 × 2.6-2.7 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, lanceolate, strongly hooked or curved, 1.6-2 mm.

n = 16.