Flora of North America species comparison

never tuberous.

tuberous, 2.5-5 mm thick.

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

erect, 2.5-7.5 cm, glabrous, each with 1-4 flowers.

persistent, blades obdeltate in outline, 1-2.8 cm, segments 0.2-0.6 cm wide, deeply divided into 3 oblanceolate segments with lateral segments often again lobed or parted, base long-attenuate, margins entire, 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 glabrous;

receptacle glabrous or sparsely pilose;

sepals 3-7 × 1.5-3 mm, abaxially glabrous;

petals 5, 6-12 × 2-5 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.

globose to cylindric, 3.5-8 × 3-7 mm;

achenes 1.1-1.4 × 0.8-1.1 mm, finely pubescent;

beak subulate, straight, 0.2-0.8 mm.

= 28.