Flora of North America species comparison

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

simple or several from base, erect to decumbent, branched (several) distally, 0.5–2.4(–3.2) 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.

(soon withered);

not rosulate;

petiole 0.8–2.5 cm;

blade 1- or 2-pinnatifid, 3–5.6 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).

petiolate;

blade pinnatifid (similar to basal), 0.7–2 cm × 2–10 mm, base attenuate to cuneate, not auriculate, margins dentate to incised or pinnately lobed.

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

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

(paniculate), elongated, (often dense) in fruit;

rachis puberulent, trichomes straight or curved, clavate.

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 (tardily deciduous), oblong, 0.5–0.7 × 0.3–0.4 mm;

petals (absent or rudimentary), white, linear, 0.2–0.4 × 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.

ascending to divaricate, straight or slightly recurved, (terete), (1.4–)1.6–2.3(–2.9) × 0.1–0.15 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-elliptic, 1.7–2.1 × 1.2–1.6 mm, apically winged, apical notch 0.1–0.2 mm deep;

valves thin, smooth, not or weakly veined, glabrous;

style 0.1–0.15 mm, included in or equaling apical notch.

ovate, 1.5–2.3 × 1–1.3 mm.

oblong, 0.8–1 × 0.5–0.6 mm.

= 32, 64.