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 ascending or decumbent to prostrate, rarely erect, branched distally, (0.4–)0.7–1.7(–2) 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.

not rosulate;

petiole 0.5–3 cm;

blade 2-pinnatifid (lobes lanceolate to oblong), 1.5–5.6 cm, margins (of lobes) entire.

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 pinnatifid, 0.8–3 cm × 0.3–8 mm, base cuneate to attenuate, not auriculate, margins (of lobes) entire.

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

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

elongated, (dense) in fruit;

rachis puberulent, trichomes straight, cylindrical.

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, 0.7–1(–1.2) × 0.3–0.4 mm;

petals (rudimentary), white, linear, 0.2–0.5 × 0.05 mm, claw absent;

stamens 2, median;

filaments 0.5–0.8 mm;

anthers 0.1–0.15 mm.

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

suberect and subappressed at base, recurved and becoming divaricate distally, strongly curved, (often flattened and narrowly winged), (1–)1.4–2.5(–3) × 0.2–0.4 mm, puberulent adaxially.

(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.

ovate-orbicular to ovate, 2.5–3.3 × 2–3 mm,apically winged, apical notch 0.3–0.6 mm deep;

valves (enclosing seeds), thin, smooth, reticulate-veined, glabrous or puberulent on margin;

style obsolete or to 0.1 mm, included in apical notch.

ovate, 1.5–2.3 × 1–1.3 mm.

oblong, 1.2–1.6 × 0.7–0.8 mm.

= 32, 64.

= 32.