Flora of North America species comparison

never tuberous.

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

erect to decumbent, not rooting nodally, glabrous, not bulbous-based, spheric or ellipsoid bulbils sometimes formed in leaf axils.

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.

simple and undivided, blades cordate to deltate or semicircular, 1.8-3.7 × 2-4 cm, base cordate, margins entire or crenate, apex rounded or obtuse.

receptacle pubescent;

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

petals 5, yellow, 9–13 × 8–11 mm.

receptacle glabrous;

sepals spreading, saccate at extreme base, 4-9 × 3-6 mm, glabrous;

petals yellow, 10-15 × 3-7 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.

hemispheric, 4-5 × 6-8 mm;

achenes 2.6-2.8 × 1.8-2 mm, pubescent;

beak absent.

roots present.