Flora of North America species comparison

several from base, usually erect to ascending, rarely decumbent, branched, 0.4–1.5(–2) dm.

simple or several from base, erect to ascending, branched distally, 1–6(–7) dm.

(soon withered);

not rosulate;

petiole 0.5–1.5(–2) cm;

blade margins entire or pinnatifid (lobes 2–5 pairs, linear to filiform), 1.5–5 cm × 0.5–2 mm.

(withered by anthesis);

not rosulate.

petiolate;

blade linear, 0.1–0.3 cm × 0.5–2 mm, base attenuate, not auriculate, margins entire.

sessile;

blade lanceolate to linear, 2–7.5(–10) cm × 2–10 mm, base cuneate to attenuate, not auriculate, margins entire or sparsely dentate subapically.

considerably elongated, (lax) in fruit;

rachis glabrous or puberulent, trichomes straight, cylindrical.

considerably elongated in fruit, (lax);

rachis usually pilose, rarely glabrous, trichomes usually curved, cylindrical.

sepals oblong, 0.6–0.8 × 0.4–0.5 mm;

petals absent;

stamens 4, median;

filaments 0.6–0.7;

anthers ca. 0.1 mm.

sepals oblong, 1.8–2.5 × 0.9–1.5 mm;

petals lemon yellow (fading whitish), spatulate, 2.8–4 × 1.2–1.8 mm, claw 1–1.4 mm;

stamens 6;

filaments 1.8–2.5 mm, (glabrous);

anthers 0.5–0.6 mm.

divaricate to horizontal or descending, usually recurved, rarely straight, (terete or slightly flattened), 2–4(–6) × 0.2–0.3 mm, glabrous or puberulent adaxially.

divaricate to horizontal, straight or slightly sigmoid, (terete), 5–15 × 0.15–0.2 mm, pilose adaxially.

ovate, 2.4–3.6 × 1.8–2.5 mm, apically winged, apical notch (V-shaped), 0.3–0.8 mm deep;

valves thin, smooth, strongly reticulate-veined, glabrous;

style obsolete or to 0.1 mm, included in apical notch.

broadly ovate, 3–3.8(–4) × 2.8–3.2(–3.5) mm, apically not winged, apical notch 0(–0.1) mm deep;

valves thin, obscurely veined, smooth or minutely papillate, glabrous;

style 0.3–0.8(–1) mm, exserted beyond apical notch.

oblong, 1.4–1.8 × 0.8–0.9 mm.

(reddish brown), oblong, 1.8–2.2 × 1–1.4 mm.

= 16.