Flora of North America species comparison

simple from base, erect, branched distally, (2–)3.5–12(–15) dm.

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

not rosulate;

petiole 1–9(–14) cm;

blade elliptic-ovate to oblong, (2–)3.5–15(–25) cm × (5–)15–50(–80) mm, (leathery), margins entire or serrate.

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 or shortly petiolate;

blade oblong to elliptic-ovate or lanceolate, (1–)2–9(–12) cm × 3–45 mm, base cuneate, not auriculate, margins serrate or entire.

shortly petiolate;

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

(subcorymbose panicles), slightly elongated or not in fruit;

rachis glabrous or sparsely puberulent, trichomes straight, cylindrical.

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

rachis glabrous.

sepals suborbicular to ovate, 1–1.4 × 0.8–0.9 mm;

petals white, obovate, 1.8–2.5 × (0.8–)1–1.3 mm, claw 0.7–1 mm;

stamens 6;

filaments 0.9–1.4 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 divaricate, straight or slightly curved, (terete), 2–5(–6) × 0.1–0.2 mm, glabrous or puberulent adaxially.

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

oblong-elliptic to broadly ovate or suborbicular, (1.6–)1.8–2.4(–2.7) × 1.3–1.8 mm, apically not winged, apical notch 0(–0.1) mm deep;

valves thin, smooth, not veined, glabrous or sparsely pilose;

style 0.05–0.15 mm, exserted beyond apical notch (when present).

(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.

oblong, (0.8–)1–1.2 × 0.6–0.9 mm.

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

= 24.

= 32.