Flora of North America species comparison

slender, 0.8-1.4 mm thick.

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

erect from short caudices, not rooting nodally, glabrous, not bulbous-based.

basal leaf blades semicircular or reniform in outline, shallowly 5-7-lobed, 1.2-4.6 × 1.8-6.6 cm, ultimate segments semicircular, margins crenate, apex rounded or weakly apiculate;

cauline leaves 0-2, scalelike.

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.

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, white or pale yellow, 6-13 × 3-6 mm, glabrous;

petals 8-12, greenish, 2-4 × 0.6-1.6 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.

ovoid, 6-7 × 6-8 mm;

achenes 3.8-4.2 × 0.8-1 mm, canescent;

beak persistent, filiform, 1.2-1.4 mm, hooked distally.

n = 16.

roots absent.