Flora of North America species comparison

simple from base, erect, (paniculately) branched beyond base or distally, 2–6 dm.

several from base, erect or decumbent basally, branched (several) distally, (0.8–)2.1–6.6(–9.2) dm.

(soon withered, often before anthesis);

not rosulate;

blade dentate to pinnatifid.

(early withered);

not rosulate;

petiole 0.9–4.4 cm;

blade obovate, spatulate, or ovate, (1.8–)2.5–8.6(–14) cm × 10–37 mm, margins subentire or dentate.

shortly petiolate to subsessile;

blade narrowly oblanceolate to linear, 1–3.3 cm × 1–4 mm, base attenuate, not auriculate, margins entire.

sessile;

blade obovate to oblong or lanceolate to oblanceolate, (1.5–)2.6–9.3(–13.2) cm × (7–)12–31(–45) mm, base sagittate-amplexicaul or auriculate, margins dentate or entire, (surfaces pubescent or glabrous).

(often paniculate), considerably elongated in fruit;

rachis glabrous or puberulent, trichomes straight, cylindrical.

(corymbose panicles), elongated in fruit;

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

sepals oblong, 0.7–0.8 × 0.3–0.4 mm;

petals (rudimentary), white, linear, 0.4–0.6 × 0.05–0.1 mm, claw absent;

stamens 4, median and lateral;

filaments 0.6–0.8 mm;

anthers ca. 0.2 mm.

sepals oblong to ovate, 1.7–3 × 1–1.6 mm;

petals white, obovate, 3–5 × 1.2–2.4 mm, claw 1.2–2 mm;

stamens 6;

filaments 2–3.3 mm, (glabrous);

anthers 0.5–0.6 mm.

divaricate-ascending to horizontal, straight, (terete), 2–3.5 × 0.1–0.15 mm, puberulent adaxially.

ascending to horizontal, straight, (terete), 5–16(–19) × 0.2–0.3 mm, glabrous or sparsely puberulent adaxially.

orbicular to broadly elliptic, 1.8–2 × 1.7–1.8 mm, apically not winged, apical notch 0.05–0.1 mm deep;

valves thin, smooth, not veined, sparsely pilose;

style ca. 0.1 mm, equaling apical notch.

(indehiscent), obovoid to subglobose or obcompressed globose, 3.5–5.8(–7) × (3.5–)4–6.2(–7) mm, apically not winged, apical notch absent;

valves thin, smooth, often not veined, glabrous;

style (0.8–)1.2–2(–2.3) mm.

oblong, 1–1.2 × 0.7–0.8 mm.

(dark reddish brown), ovate, 1.5–2.3 × 1–1.3 mm.

= 48, 80, 128.