Flora of North America species comparison

simple from base, erect, branched distally, (1–)2–8(–10) dm.

simple from base, erect, branched distally, (2–)3–8(–11) dm.

(withered by anthesis);

not rosulate;

petiole 1–4 cm;

blade 1- or 2-pinnatifid or pinnatisect (lobes ovate to oblong), 2–8(–10) cm, margins (of lobes) entire or dentate.

rosulate (on sterile shoots);

petiole (1.5–)2.5–8(–10) cm;

blade oblanceolate to spatulate, (2–)3–7(–9) cm × 5–23(–32) mm, margins crenate to serrate-crenate.

petiolate;

blade similar to basal, usually less divided, rarely undivided, (distal) often linear, bases not auriculate, margins entire.

shortly petiolate or sessile;

blade oblong to oblanceolate, 1–3.5 cm × 4–15 mm, base cuneate, not auriculate, margins entire.

considerably elongated in fruit;

rachis glabrous.

(subcorymbose panicles), slightly elongated in fruit;

rachis puberulent, trichomes straight.

sepals oblong-obovate, 1–1.8 × 0.5–0.8 mm;

petals white or lavender, spatulate to obovate, 2–3.5(–4) × 0.7–1.4 mm, claw 1–1.4 mm;

stamens 6;

filaments (median pairs) 1.5–2 mm, (glabrous);

anthers 0.4–0.5 mm.

sepals oblong to ovate, (1–)1.3–1.8(–2) × 0.9–1.2 mm;

petals white, suborbicular to broadly obovate, (1.8–)2–3 × 1.3–2 mm, claw 0.5–1 mm;

stamens 6;

filaments 1.4–1.6 mm, (glabrous);

anthers 0.5–0.7 mm.

suberect to ascending, appressed to rachis, straight, (terete or slightly flattened), 1.5–4(–6) × 0.4–0.6 mm, glabrous.

divaricate-ascending to horizontal, straight, (terete), 3–6(–8) × 0.2–0.25 mm, puberulent adaxially.

broadly ovate or ovate-oblong, (4–)5–6.4(–7) × 3–4.5(–5.6) mm, apically broadly winged, apical notch 0.2 0.8 mm deep;

valves thin, smooth, not veined, glabrous;

style 0.1–0.5(–0.8) mm, usually included in, rarely subequaling, apical notch.

broadly ovate, (2.5–)3–3.5(–4) × (2–)2.3–2.8 mm, apically winged, apical notch 0.1–0.2mm deep;

valves thin, smooth, not veined, glabrous;

style 0.2–0.6 mm, exserted beyond apical notch.

(reddish brown), ovate-oblong, 2–2.7(–3) × 1–1.5 mm, (3-lobed).

ovate, 1.5–2 × 1–1.3 mm.

= 16, 32.