Flora of North America species comparison

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

erect or ascending, sparsely pilose.

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.

receptacle glabrous;

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

petals 11-15, yellow, 8-12 × 3-5 mm.

pedicellate;

receptacle sparsely hispid;

sepals 5, spreading, 4-7 × 1-2 mm, strigose;

petals 5, 5-8 × 2-4 mm.

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.

discoid, 8-9 mm across;

achenes 5-8 per head, 4-6.4 × 2.8-4.4 mm, faces and margin covered with long spines, glabrous;

beak lance-subulate, straight, 1.6-3.8 mm.

roots absent.

and lower cauline leaf blades obovate to rhombic in outline, 3-parted or 3(-5)-foliolate, 1.8-5.2 × 1.6-4.2 cm, leaflets oblanceolate or divided into oblanceolate or linear segments, leaflet base narrowly acuminate, margins entire or distally dentate, apex rounded or acuminate.

= 16.