Flora of North America species comparison

erect, unbranched or branched basally, (0.4–)1.5–4.5(–7) dm.

erect, unbranched, (0.1–)0.4–4dm.

(often withered by fruiting), similar to cauline.

blade linear to narrowly linear-oblanceolate, 3–5 cm × 1–2 mm, base attenuate, margins entire or denticulate.

(proximal and median) petiolate and (distal) sessile, (petiole (0.3–)0.5–2(–3) cm);

blade [linear, narrowly oblanceolate, elliptic, or oblong, (1–)2–8(–11) cm × (2–)5–12(–17) mm, base attenuate], margins sinuate or coarsely dentate to denticulate or repand, (distal) entire or denticulate, (apex acute).

blade reduced distally, often as bracts.

considerably elongated in fruit.

(sometimes bracteate basally), elongated in fruit.

sepals linear-oblong, 4–6 mm, lateral pair not saccate basally;

petals yellow, narrowly oblanceolate to spatulate, 6–8 × 1.5–2 mm, claw 3–6 mm, apex rounded;

median filaments 4–6 mm;

anthers narrowly oblong, 0.8–1.3 mm.

sepals oblong or narrowly so, 5–9 mm, lateral pair slightly saccate basally;

petals usually purple, rarely lilac, oblanceolate to broadly obovate, 10–20 × 3–5 mm, claw 5–9 mm, apex rounded;

median filaments 6–9 mm;

anthers narrowly oblong, 1–1.5 mm.

divaricate, stout, as wide as fruit, 2–4(–6) mm.

divaricate to ascending, slender, narrower than fruit, (4–)7–24(–35) mm.

widely spreading to divaricate-ascending, narrowly linear, straight or curved upward, somewhat torulose, (2–)3–8(–10) cm × 1.5–2 mm, 4-angled, not striped;

valves with prominent midvein, pubescent outside, trichomes 2-rayed and, fewer, 3-rayed, often glabrous, sometimes pubescent inside;

ovules (40–)50–80(–90) per ovary;

style cylindrical or subclavate, stout, 1–4 mm, sparsely pubescent;

stigma slightly 2-lobed, lobes as long as wide.

erect to divaricate-ascending, narrowly linear, straight or curved inward, not torulose, (3–)5–11(–13) cm × 2–4 mm, latiseptate, not striped;

valves with prominent midvein, pubescent outside, trichomes 2-rayed, glabrous inside;

ovules (28–)36–74 per ovary;

style cylindrical, stout, 0.5–3 mm, sparsely pubescent;

stigma strongly 2-lobed, lobes as long as wide.

oblong, 1.1–1.5 × 0.6–0.7 mm;

not winged or, rarely, winged distally.

oblong, 1.7–2.2 × 0.9–0.1.4 mm;

not winged.

of leaves 2-rayed, mixed with fewer 3-rayed ones.

of leaves 2-rayed.

= 16.

= 24, 36.