Flora of North America species comparison

slender, 0.4-1.6 mm thick.

never tuberous.

erect or decumbent from short or long caudices, 4-27 cm, glabrous, each with 1-3 flowers.

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

persistent, blades reniform or cordate to obovate or broadly oblong, lobed or 3-parted, 0.5-4.1 × 0.8-3.7 cm, segments again 1(-2)×-lobed, base obtuse to cordate, apices of segments rounded in outline.

broadly triangular to cordate in outline, 3-foliolate, 6-13 × 8-16 cm, leaflets lobed, margins toothed, ultimate segments elliptic to lance-elliptic or oblong, margins toothed, apex acute or obtuse.

pedicels glabrous;

receptacle glabrous or sparsely pilose;

sepals 4-8 × 2-6 mm, abaxially glabrous or pilose;

petals 5-8, 6-16 × 4-16 mm;

nectary scale glabrous.

receptacle hispid;

sepals reflexed 1-2 mm above base, 6-9 × 3-4 mm, sparsely hispid;

petals 5, abaxially yellow or purplish, adaxially yellow, 9-11 × 6-8 mm.

of achenes cylindric or ovoid, 5-10 × 4-7 mm;

achenes 1.4-2 × 1-1.6 mm, glabrous or sparsely pubescent;

beak lanceolate or subulate, straight (sometimes curved when immature), 0.6-1.8 mm.

of achenes ovoid to globose, 9-11 × 8-11 mm;

achenes 3.2-3.8 × 2-3 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, lanceolate or subulate from triangular base, straight or tip weakly hooked, 1-1.8 mm.