Flora of North America species comparison

often simple from base, erect, branched distally, (1.5–)2–6.7(–9.4) dm.

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

(later withered); rosulate;

petiole (0.7–)1.5–4.5 cm;

blade pinnatifid, 2–8.3 cm × 9–26 mm, margins (of lobes) entire or dentate.

(withered by anthesis);

not rosulate.

shortly petiolate;

blade oblanceolate to nearly linear, 1–4.5(–6.2) cm × 3–10(–17) mm, base attenuate to cuneate, not auriculate, margins entire or dentate.

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.

much-elongated in fruit;

rachis pubescent, trichomes curved, with fewer and longer, straight ones.

considerably elongated in fruit, (lax);

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

sepals oblong, 0.8–1 × 0.2–0.4 mm;

petals (sometimes absent), white, oblanceolate, 0.4–1.6 × 0.1–0.8 mm, claw absent;

stamens 2, median;

filaments 0.8–1 mm;

anthers 0.1–0.2 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.

usually divaricate, rarely horizontal, straight or slightly recurved, (terete), (2.5–)3–4.1(–4.7) × 0.2 mm, puberulent adaxially.

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

elliptic-obovate to obovate-orbicular, 2.4–3.2 × 1.8–2.5 mm, apically winged, apical notch 0.2–0.5 mm deep;

valves thin, smooth, not veined, sparsely puberulent, (trichomes often antrorsely appressed, sometimes restricted to margin);

style 0.05–0.1 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.

ovate, 1.4–1.6 × 0.7–0.9 mm.

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

= 16.