Flora of North America species comparison

never tuberous.

erect, never rooting nodally, strigose or hirsute, base bulbous and cormlike.

reclining or erect, glabrous or sparsely pilose.

blades ovate to cordate in outline, 3-foliolate, rarely merely deeply divided, 2–5.3 × 2.4–5.4 cm, leaflets 1–2x-lobed, ultimate segments oblong to obovate, margins toothed, apex rounded in outline.

receptacle pubescent;

sepals reflexed 2–3 mm above base, 6–9 × 2–4 mm, pilose;

petals 5, yellow, 9–13 × 8–11 mm.

pedicellate;

receptacle hispid;

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

petals 5, 4-8 × 2-4.5 mm.

ovoid, 6–9 × 5–7 mm;

achenes 2.2–3.2 × 2.2–2.8 mm, glabrous, margin forming narrow rib 0.1–0.2 mm wide;

beak persistent, lanceolate to deltate, 0.2–0.8 mm, slender tip hooked when present.

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.