Flora of North America species comparison

never tuberous.

tuberous, 2.5-5 mm thick.

erect or reclining, 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.

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.

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.

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.

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.

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.