Flora of North America species comparison

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

simple or few from base (caudex), erect to ascending, unbranched or branched distally, (0.3–)0.5–1.5(–1.7) dm.

(soon withered, often before anthesis);

not rosulate;

blade dentate to pinnatifid.

not rosulate;

petiole 0.3–0.8 cm, (papery);

blade linear, (0.5–)1–7(–8) cm × 10–36 mm, margins entire.

shortly petiolate to subsessile;

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

sessile;

blade linear, base attenuate, not auriculate, margins entire, (similar to basal, smaller distally).

(often paniculate), considerably elongated in fruit;

rachis glabrous or puberulent, trichomes straight, cylindrical.

slightly elongated in fruit;

rachis puberulent, trichomes straight.

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 (sometimes somewhat persistent), oblong-obovate, 1.8–2.8 × 1.3–1.8 mm;

petals white to pale yellow, suborbicular to broadly obovate, 3.2–4.6 × 2.5–3.2 mm, claw 0.5–1.5 mm;

stamens 6;

filaments 1.8–2.6 mm, (glabrous);

anthers 0.5–0.8 mm.

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

divaricate-ascending, straight, (terete), 3–8 × 0.3–0.4 mm, puberulent throughout.

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.

ovate, 4–5.5(–6.2) × 3–3.8 mm, apically winged, apical notch 0–0.2 mm deep;

valves thin, smooth, not veined, glabrous;

style 0.5–1.2 mm, exserted beyond apical notch.

oblong, 1–1.2 × 0.7–0.8 mm.

ovate, 2.2–2.8 × 1.4–1.6 mm.