Flora of North America species comparison

never tuberous.

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

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

basal leaf blades semicircular or reniform in outline, shallowly 5-7-lobed, 1.2-4.6 × 1.8-6.6 cm, ultimate segments semicircular, margins crenate, apex rounded or weakly apiculate;

cauline leaves 0-2, scalelike.

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.

receptacle glabrous;

sepals spreading, white or pale yellow, 6-13 × 3-6 mm, glabrous;

petals 8-12, greenish, 2-4 × 0.6-1.6 mm.

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.

ovoid, 6-7 × 6-8 mm;

achenes 3.8-4.2 × 0.8-1 mm, canescent;

beak persistent, filiform, 1.2-1.4 mm, hooked distally.

roots absent.