Flora of North America species comparison

slender, 0.2-0.8 mm thick.

always both filiform and tuberous on same stem.

erect or nearly erect, 10-50 cm, glabrous, each with 9-40 flowers.

erect or ascending, never rooting nodally, strigose or spreading-strigose, base not bulbous.

persistent, blades reniform, outer undivided, inner 3-lobed to 3-foliolate, 1-3.5 × 1.5-4.5 cm, base truncate or cordate, margins crenate, apex rounded or obtuse.

ovate to broadly ovate in outline, 3-5-foliolate, 2.1-4.7 × 1.9-4.5 cm, leaflets undivided or 1x-lobed or -parted, ultimate segments oblanceolate or obovate, margins entire or with few teeth, apex rounded-acute to rounded-obtuse.

pedicels pubescent or glabrous;

receptacle sparsely pilose;

sepals 2-3 × 1-2 mm, abaxially sparsely hispid, hairs colorless;

petals 5, 1-2 × 0.5-1 mm;

nectary scale glabrous.

receptacle hispid or glabrous;

sepals spreading or sometimes reflexed from base, 5-7 × 2-3 mm, hispid or glabrous;

petals 5(-7), yellow, 8-14 × 3-6 mm.

globose to ovoid, 3-7 × 3-5 mm;

achenes 1.5-2 × 1.4-1.8 mm, glabrous;

beak slender, strongly curved, 0.6-1 mm.

globose or ovoid, 5-9 × 5-8 mm;

achenes 2-2.8 × 1.8-2.2 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, filiform, straight, 1.2-2.8 mm.

= 16.

= 32.