Flora of North America species comparison

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

few to several from base, erect to ascending, unbranched, (0.5–)0.8–3 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.

(soon withered);

not rosulate;

petiole 1–4 cm;

blade linear or pinnatisect, (2–)2.5–6.1(–7.2) cm × (0.5–)1–2(–3) mm, (lobes linear to narrowly oblong), margins 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).

sessile;

blade linear, 1.2–5.8 cm × 0.5–2(–3) mm, base attenuate, not auriculate, margins entire.

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

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

elongated, (dense or lax) in fruit;

rachis puberulent or hirsute, 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 oblong to ovate, 0.7–1.1 × 0.2–0.6 mm;

petals absent;

stamens 4, median;

filaments 0.5–1 mm;

anthers ca. 0.1 mm.

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

erect to slightly ascending, straight and appressed to rachis or distally slightly recurved, (strongly flattened), (2–)3–4.2 × 0.4–0.6 mm (width proximal to apex), puberulent throughout.

(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 to ovate-oblong, (3–)4–6 × 2.5–3.5 mm, apically winged, apical notch (V-shaped), (0.8–)1–2 mm deep;

valves thin, smooth, strongly reticulate-veined, usually glabrous, rarely pubescent;

style absent or obsolete, included in apical notch.

ovate, 1.5–2.3 × 1–1.3 mm.

ovate, 1.3–2 × 0.8–1.2 mm.

= 32, 64.