Flora of North America species comparison

never tuberous.

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

prostrate, buried, rooting nodally, glabrous, not bulbous-based.

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.

blades reniform, deeply 3-parted, 1.1-2.6 × 1.6-4.3 cm, segments undivided or 1x cleft, margins crenate, apex rounded.

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 or reflexed from base, 4-7 × 2-5 mm, glabrous;

petals yellow, 5-6 × 2-3 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, 5-7 × 8-10 mm;

achenes 3.8-4.2 × 2-2.2 mm, glabrous;

beak persistent, lanceolate, curved, tip hooked, 1.6-2.4 mm.

roots absent.

= 16.