Flora of North America species comparison

simple from base, erect, branched distally, (3.5–)4.5–16(–18) dm.

several from base (caudex), ascending, branched distally, (1–)1.5–3.5(–4) dm.

(soon deciduous), not rosulate;

petiole (1–)2–5.5(–7.5) cm;

blade pinnatifid, (2–)3–6.8(–9) cm × 10–30 mm, margins (of lobes) dentate to serrate.

rosulate;

petiole (0.5–)1.5–6(–7.5) cm;

blade oblanceolate to obovate, (1.5–)2.5–7(–9) cm × (10–)15–25 mm, margins usually entire, rarely denticulate subapically.

shortly petiolate or sessile;

blade narrowly lanceolate or oblanceolate to linear, 3–7 cm × (2.5–)4–10mm (smaller distally), base attenuate to cuneate, not auriculate, margins usually entire, rarely dentate.

shortly petiolate or sessile;

blade narrowly lanceolate to broadly oblanceolate, 1–5 cm × 2–9(–12) mm, base cuneate, not auriculate, margins usually entire, rarely denticulate subapically.

elongated in fruit;

rachis puberulent, trichomes straight or curved.

elongated in fruit;

rachis puberulent, trichomes straight, sometimes clavate.

sepals suborbicular to oblong, 0.8–1.5 × 0.7–1.2 mm;

petals white, suborbicular, 2.2–3.5(4) × 1.5–2.5 mm, claw 0.7–1.5 mm;

stamens 6;

filaments 1.5–2.5 mm, (glabrous);

anthers 0.3–0.4 mm.

sepals oblong-obovate, (1.5–)1.8–2.5 × 0.8–1.3 mm;

petals white, obovate, (2.3)2.5–3.6(–4) × 1.5–2.2 mm, claw 0.5–1 mm;

stamens (2 or) 4 (or 6), median and lateral when 4, (erect);

filaments 1.7–2.5 mm, (glabrous);

anthers 0.5–0.8 mm.

divaricate-ascending to horizontal, usually slightly recurved or somewhat sigmoid, rarely straight, (not winged), (3–)3.5–7.5(–8) × 0.2–0.3 mm, puberulent adaxially.

divaricate-ascending to horizontal, straight, (not winged), (4–)5–10 × 0.3–0.5 mm, puberulent adaxially.

broadly ovate, 2–3.5(–4) × 1.8–2.6(–3) mm, apically winged, apical notch 0.1–0.2mm deep;

valves thin, smooth, not veined, glabrous;

style (0.2–)0.3–0.6(–0.7) mm, exserted beyond apical notch.

ovate, (3–)3.2–4(–4.4) × 2–3.5 mm, apically winged, apical notch 0.1–0.3 mm deep;

valves thin, smooth, not veined, glabrous;

style 0.5–0.8(–1) mm, exserted beyond apical notch.

(dark brown), ovate, 1.4–1.8 × 0.8–1.1 mm.

ovate, 1.8–2 × 0.9–1.1 mm.