Flora of North America species comparison

never tuberous.

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

erect or nearly erect, hispid.

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 glabrous;

sepals 5, reflexed, 1.5-2 × 0.8-1.2 mm, densely pubescent;

petals 0-5, 1.1-1.8 × 0.2-0.7 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, 3-5 × 3-5 mm;

achenes 10-20 per head, 1.7-2 × 1.4-1.7 mm, faces papillose, each papilla crowned with hooked bristle, otherwise glabrous, margin smooth;

beak deltate with slender recurved tip, 0.4-0.6 mm.

and lower cauline leaf blades semicircular or reniform, 3-parted or -divided, 1.5-3.2 × 1-2.4 cm, again lobed, base cordate, margins dentate, apex rounded.