Flora of North America species comparison

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

erect, unbranched or branched distally, (0.6–)1.2–6.5(–8) dm.

(often withered by fruiting), similar to cauline.

(often withered by fruiting);

blade oblanceolate, 2–10 cm × (0.2–)0.5–1.5(–2.4) mm, base attenuate, margins dentate, apex acute.

(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 denticulate.

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, 8–12 mm, lateral pair slightly saccate basally;

petals yellow, obovate to suborbicular, 13–22 × 4–9 mm, claw 8–15 mm, apex rounded;

median filaments 8–14 mm;

anthers linear, 2.5–4 mm.

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

horizontal to divaricate, slender, narrower than fruit, 5–16(–25) 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.

widely spreading or divaricate, narrowly linear, usually straight, rarely curved upward, not torulose, (3–)5–12(–14) cm × 1.2–2.7 mm, 4-angled, strongly (longitudinally) 4-striped;

valves with prominent midvein and replum, densely pubescent outside, trichomes 2-rayed between midvein and replum, glabrous inside;

ovules 72–120 per ovary;

style cylindrical, slender, 1–4 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.

ovoid, (1–)1.3–2.3 × 0.7–1.2 mm; usually not winged, rarely winged distally.

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

of leaves 2- or 3-rayed.

= 16.

= 36.