Flora of North America species comparison

never tuberous.

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

prostrate, glabrous, rooting nodally.

basal leaves absent, cauline leaf blades reniform to broadly flabellate, deeply 3-lobed or 3-parted, 0.3-1.2 × 0.5-2.1 cm, base obtuse to cordate, lobes undivided or lateral lobes cleft, terminal segment entire or distally crenulate, apex rounded.

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.

receptacle glabrous;

sepals 3-4, spreading or reflexed from base, 2-4 × 1-3 mm, glabrous;

petals 3-4, 2-4 × 1-3 mm;

nectary on petal surface, scale poorly developed and forming crescent-shaped ridge surrounding but not covering nectary;

style 0.1-0.2 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 or short-ovoid, 3-5 × 2-5 mm;

achenes 1-1.4 × 0.8-1.2 mm, glabrous;

beak linear, curved, 0.1-0.4 mm.

= 32.