Flora of North America species comparison

always both filiform and tuberous on same stem.

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

reclining or erect, glabrous or sparsely pilose.

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.

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.

pedicellate;

receptacle hispid;

sepals 5, reflexed, 4-7 × 2-3 mm, sparsely bristly;

petals 5, 4-8 × 2-4.5 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.

globose, 13-16 × 13-16 mm;

achenes 10-20 per head, 5-5.5 × 3-3.5 mm, faces covered with long spines, glabrous, margin smooth;

beak lanceolate, curved, 2-2.5 mm.

and lower cauline leaf blades broadly cordate to reniform or semicircular, undivided or 3-lobed, 2-5 × 3-6.5 cm, base rounded to cordate, margins coarsely crenate, apex rounded.

= 32.