Flora of North America species comparison

thickened basally, glabrous.

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

erect or ascending, never rooting nodally, glabrous.

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 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.

bracts narrowly elliptic to ovate or lanceolate.

receptacle glabrous;

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

petals 11-15, yellow, 8-12 × 3-5 mm.

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.

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, 3 × 4-5 mm;

achenes 1.6-1.8 × 1.2 mm, glabrous;

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

roots absent.

= 16.