Flora of North America species comparison

few to several from base, erect to ascending, branched throughout, (0.7–)1–4.8(–6.1) dm.

often several from base, usually ascending or decumbent to prostrate, rarely erect, branched distally, (0.4–)0.7–1.7(–2) dm.

often not rosulate;

petiole 1–6 cm;

blade pinnately lobed, (1–)1.5–8(–11) cm × (5–)10–35 mm, margins (of lobes) entire or denticulate.

not rosulate;

petiole 0.5–3 cm;

blade 2-pinnatifid (lobes lanceolate to oblong), 1.5–5.6 cm, margins (of lobes) entire.

sessile;

blade linear, (0.8–)1.3–7(–9.5) cm × (0.7–)1–2(–3) mm, base attenuate, not auriculate, margins entire.

shortly petiolate;

blade pinnatifid, 0.8–3 cm × 0.3–8 mm, base cuneate to attenuate, not auriculate, margins (of lobes) entire.

elongated in fruit;

rachis puberulent or glabrous.

elongated, (dense) in fruit;

rachis puberulent, trichomes straight, cylindrical.

sepals ovate to oblong, 1–2 × 0.8–1 mm;

petals white, suborbicular, 2–3 × 1–2 mm, claw 0.5–1.5 mm;

stamens 6;

filaments 1.5–2 mm, (glabrous);

anthers 0.2–0.4 mm.

sepals (persistent), oblong, 0.7–1(–1.2) × 0.3–0.4 mm;

petals (rudimentary), white, linear, 0.2–0.5 × 0.05 mm, claw absent;

stamens 2, median;

filaments 0.5–0.8 mm;

anthers 0.1–0.15 mm.

divaricate to horizontal, straight or recurved to somewhat sigmoid, (terete), 3.5–8(–11) × 0.2 mm, glabrous or puberulent adaxially.

suberect and subappressed at base, recurved and becoming divaricate distally, strongly curved, (often flattened and narrowly winged), (1–)1.4–2.5(–3) × 0.2–0.4 mm, puberulent adaxially.

broadly ovate, 2–3.7(–4.3) × (1.5–)1.8–2.9(–3.4) mm, apically winged, apical notch 0.1–0.3(–0.4) mm deep;

valves thin, smooth, not veined, glabrous;

style 0.2–0.6 mm, exserted beyond apical notch.

ovate-orbicular to ovate, 2.5–3.3 × 2–3 mm,apically winged, apical notch 0.3–0.6 mm deep;

valves (enclosing seeds), thin, smooth, reticulate-veined, glabrous or puberulent on margin;

style obsolete or to 0.1 mm, included in apical notch.

ovate, 1.5–1.8(–2) × 0.9–1.2(–1.5) mm.

oblong, 1.2–1.6 × 0.7–0.8 mm.

= 32.

= 32.