Flora of North America species comparison

often simple from base, erect or decumbent basally, branched (several) distally, (0.8–)2–6.5(–9) dm.

often several from base, usually procumbent to decumbent, rarely ascending, branched distally, (0.3–)0.6–2.5(–3.5) dm.

(early withered);

not rosulate;

petiole 1–4 cm;

blade obovate, spatulate, or ovate, (1.5–)3–10(–15) cm × 10–40 mm, margins sinuate to dentate or entire.

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 ovate, elliptic, oblong, or lanceolate, oblanceolate, or obovate, (1–)3–9(–15) cm × (5–)10–20(–50) mm, base sagittate-amplexicaul or auriculate, margins dentate or entire, (surfaces pubescent or glabrous).

shortly petiolate;

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

(corymbose panicles), slightly or considerably elongated in fruit;

rachis glabrous or puberulent, trichomes straight or curved, cylindrical.

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

rachis glabrous.

sepals oblong to ovate, 1.5–2.5 × 0.7–1.2 mm;

petals white, obovate, (2.5–)3–4(–4.5) × (1–)1.3–2(–2.2) mm, claw 1–1.7 mm;

stamens 6;

filaments 2–3 mm, (glabrous);

anthers 0.4–0.5 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.

ascending to horizontal, straight, (terete), 5–10(–15) × 0.2–0.3 mm, glabrous or sparsely puberulent adaxially.

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

(indehiscent), cordate to subreniform, (2–)2.5–3.7(–4.3) × (3.2–)3.7–5(–5.6) mm, apically (obtuse to subacute), not winged, apical notch absent;

valves thin, smooth, reticulate-veined, glabrous;

style (0.6–)1–1.8(–2) mm.

(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, 1.5–2.3 × 1–1.3 mm.

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

= 32, 64.

= 32.