Flora of North America species comparison

simple or several from base, erect or ascending, branched distally, (1–)1.5–3.5(–5) dm.

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

(often withered by anthesis);

not rosulate;

petiole 0.5–1.5 cm;

blade obovate to oblanceolate, (1–)2–6(–7) cm × 3–20 mm, margins dentate to sinuate.

(soon withered, often before anthesis);

not rosulate;

blade dentate to pinnatifid.

sessile;

blade oblong or lanceolate, 1–5(–8) cm × (3–)5–15(–30) mm, base sagittate, margins dentate or subentire, (surfaces pubescent).

shortly petiolate to subsessile;

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

(usually corymbose, rarely paniculate), rarely elongated in fruit;

rachis pubescent, trichomes often curved.

(often paniculate), considerably elongated in fruit;

rachis glabrous or puberulent, trichomes straight, cylindrical.

sepals oblong, 1.4–2 × 0.7–1 mm;

petals white, broadly obovate, (2.2–)2.8–4 × 1–3 mm, claw 1–1.4 mm;

stamens 6;

filaments 2–2.5 mm, (glabrous);

anthers 0.4–0.5 mm.

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.

divaricate to ascending, straight or slightly curved, (terete), 3–9(–12) × 0.2–0.3 mm, pubescent.

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

(indehiscent), globose or, rarely, subglobose, (2–)3–4.4(–5) mm diam., (inflated), apically not winged, apical notch absent;

valves thin, smooth, not veined, densely puberulent;

style 0.5–1.5 mm.

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.

(brown or dark brown), ovoid, 1.5–2 × 1–1.5 mm.

oblong, 1–1.2 × 0.7–0.8 mm.

= 16.