Flora of North America species comparison

thickened basally, glabrous.

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

prostrate, sometimes rooting nodally, glabrous.

blades circular to reniform in outline, 3-5-parted, 0.8-3.8 × 1.7-6.9 cm, segments again lobed, ultimate segments elliptic or oblong, margins crenate, apex rounded;

cauline leaf 0-1, scalelike.

narrowly to broadly ovate, 1.2-4 × 0.7-2 cm, base rounded, truncate or sometimes obtuse, margins entire or denticulate, apex obtuse or acute.

bracts ovate or sometimes lanceolate.

receptacle glabrous;

sepals spreading, yellow, 7-11 × 4-7 mm, glabrous;

petals 11-15, yellow, 8-12 × 3-5 mm.

receptacle glabrous;

sepals 5, spreading or reflexed from near base, 2-4 × 1-3 mm, glabrous;

petals 5-6, 4-6 × 2-4 mm;

nectary scales glabrous.

hemispheric or spheric, 7-8 × 9-10 mm;

achenes 2.4-4.6 × 1.2-2.2 mm, glabrous;

beak persistent, filiform, hooked distally, 1-1.8 mm.

hemispheric, 2-3 × 3-4 mm;

achenes 1.2-2 × 1.2-1.4 mm, glabrous;

beak lanceolate to subulate, straight or curved, 0.6-0.8 mm.

roots absent.

= 16.