Flora of North America species comparison

never tuberous.

erect from short caudices or rhizomes, not rooting nodally, glabrous, not bulbous-based.

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

circular to ovate or obovate, undivided, 0.8-2.6 × 0.6-1.4 cm, margins entire or serrulate, apex obtuse or rounded.

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 glabrous;

sepals spreading, 4-8 × 2-4 mm, glabrous;

petals yellow, 5-12 × 1-3 mm.

receptacle pubescent;

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

petals 5, yellow, 9–13 × 8–11 mm.

depressed-hemispheric or -conic, 3-4 × 5 mm;

achenes 2-2.6 × 1-1.4 mm, glabrous;

beak persistent, lanceolate, straight, 0.8-1.2 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.

roots absent.

= 16.