Flora of North America species comparison

always both filiform and tuberous on same stem.

slender, 0.3-0.8 mm thick.

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

erect or decumbent, 1-12 cm, sparsely pilose, each with 1-3 flowers.

blades 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.

persistent, blades broadly obovate to transversely elliptic, 3-lobed or -parted, 0.9-3 × 0.8-3.4 cm, segments undivided or again lobed, base obtuse, margins entire, apices of segments rounded to rounded-obtuse.

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.

pedicels pilose;

receptacle pilose;

sepals 4-7 × 2-3 mm, abaxially pilose, hairs colorless;

petals 5, 5-8 × 3-4 mm;

nectary scale glabrous.

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.

cylindric, 6-9 × 4 mm;

achenes 1.2-1.4 × 0.8-1 mm, glabrous;

beak lance-subulate, straight or curved, 0.4-0.6 mm.

= 32.

= 64.