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 procumbent to decumbent, rarely ascending, branched distally, (0.3–)0.6–2.5(–3.5) 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.

rosulate;

petiole (1–)2–5(–5.8) cm;

blade 1- or 2-pinnatisect, (3–)4–10(–15) cm, margins (of lobes) entire or dentate.

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 pinnatisect, base cuneate, not auriculate, margins (of lobes) entire or dentate, (similar to basal, smaller and less divided distally).

elongated in fruit;

rachis puberulent or glabrous.

(leaf-opposed), ± slightly elongated in fruit;

rachis glabrous.

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, 1–1.5 × 0.5–0.6 mm;

petals white, obovate to obovate-oblong, 1–2 × 0.4–0.6 mm, claw absent;

stamens 6;

filaments (median pairs) 0.7–1 mm, (glabrous);

anthers 0.15–0.25 mm.

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

ascending, straight, (stout, terete), (0.7–)1–2(–2.4) × 0.4–0.5 mm, glabrous.

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.

(indehiscent), reniform to ovate-cordate, 2.3–3.4 × 3–4.4 mm, apically not winged, apical notch absent;

valves thick, rugose-verrucose, with distinct ridges, prominently veined, glabrous;

style 0.2–0.7 mm.

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

ovate-oblong, (curved, not winged), 1.2–1.6 × 0.7–1 mm.

= 32.

= 32.