Flora of North America species comparison

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

erect, unbranched or branched (several) basally, 0.4–3 dm.

(often withered by fruiting), similar to cauline.

blade usually oblanceolate, rarely spatulate, 2–8 cm × 3–10 mm, base attenuate, margins entire or dentate, apex acute or obtuse.

(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).

(distal) sessile;

blade margins entire or dentate-sinuate.

considerably elongated in fruit.

considerably 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 to linear-oblong, 7–10 mm, lateral pair saccate basally;

petals yellow, obovate, 14–27 × 3.5–6 mm, claw 9–13 mm, apex rounded;

median filaments 9–12 mm;

anthers linear, 2–3.5 mm.

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

divaricate-ascending, slender, narrower than fruit, 5–8 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 ascending, narrowly linear, often straight, sometimes twisted, strongly torulose, 3–10(–12) cm × 1.5–2.7 mm, latiseptate, not striped;

valves with somewhat prominent midvein, pubescent outside, trichomes 2–4-rayed, glabrous inside;

ovules 24–42 per ovary;

style cylindrical, slender, 1.5–5 mm, sparsely pubescent;

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

oblong, 1.1–1.5 × 0.6–0.7 mm;

not winged or, rarely, winged distally.

oblong, 2–3.5 × 0.8–1.5 mm;

not winged or winged distally.

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

of leaves 2- or 3-rayed.

= 16.

= 36.