Flora of North America species comparison

never tuberous.

slender, 0.2-0.8 mm thick.

erect, never rooting nodally, hispid or glabrous, base not bulbous.

erect or ascending, 5-19 cm, sparsely pilose, each with 1-4 flowers.

persistent, blades reniform or semicircular, undivided or some 3-parted, 1.4-2.1 × 1.7-2.8 cm, base cordate or truncate, margins crenate with more than 5 crenae, apex rounded.

cordate to reniform in outline, 3-parted or sometimes 3-foliolate, 1.8-5.6 × 2.8-8.3 cm, segments again lobed, ultimate segments elliptic to lanceolate, margins toothed or crenate-toothed, apex acute to rounded-obtuse.

receptacle glabrous;

sepals reflexed or sometimes spreading, 2-3.5 × 1-2 mm, pubescent;

petals 5, yellow, 2-4(-6) × 1-2(-3) mm.

pedicels pilose, sometimes sparsely so;

receptacle hispid;

sepals 4-6 × 2-3 mm, abaxially pilose, hairs colorless;

petals 5, 4-5 × 2-4 mm;

nectary scale glabrous.

globose or hemispheric, 4-7 × 4-7 mm;

achenes 2-2.8 × 1.6-2 mm, glabrous or sparsely hispid, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, lanceolate, curved, hooked, 1.2-2.5 mm.

ovoid to cylindric, 4-7 × 4-6 mm;

achenes 1.6-1.8 × 1.2-1.4 mm, glabrous;

beak lance-subulate, curved, 0.4-0.6 mm.

= 28.

= 32.