Flora of North America species comparison

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

several from base, ascending, branched (several) distally, (0.3–)0.5–2.3(–4) 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.

(soon deciduous), not rosulate;

blade often bipinnately divided.

sessile;

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

attenuate to petiolelike base, to 1 cm;

blade pinnatifid to pinnatisect, obovate to oblanceolate in outline (lobes oblong to linear), 0.5–4 cm × 3–15 mm (smaller distally), base not auriculate, margins (of lobes) entire or dentate.

elongated in fruit;

rachis puberulent or glabrous.

slightly elongated, (dense) in fruit;

rachis puberulent, trichomes straight or curved, clavate.

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 ovate to broadly oblong, 1.5–2.2 × 0.8–1.1 mm;

petals white, orbicular to spatulate, 2.5–3.7(–4) × 1.5–2.5 mm, claw 0.8–1.5 mm;

stamens 6;

filaments 1.5–2 mm, (trichomes clavate);

anthers 0.4–0.6 mm.

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

divaricate to horizontal, straight or recurved, (not winged), (2.5–)3–6(–7.5) × 0.2–0.3 mm, puberulent adaxially or throughout.

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.

orbicular to broadly ovate, 2.2–3.6 × 2–3.4 mm, apically winged, apical notch 0.1–0.3 mm deep;

valves thin, smooth, often not veined, glabrous;

style 0.2–0.8 mm, exserted beyond apical notch.

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

ovate, 1.2–1.8 × 0.9–1.1 mm.

= 32.