Flora of North America species comparison

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

erect, often branched distally, (ribbed), (0.7–)1.5–10(–15) dm.

(often withered by fruiting), similar to cauline.

(withered by fruiting), similar to cauline.

(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).

(median and distal) shortly petiolate or sessile;

blade (lanceolate, linear, or elliptic-oblong, (1–)2–7(–11) cm × (2–)5–12(–23) mm, base cuneate) margins usually subentire or denticulate, rarely sinuate-dentate, (apex acute or obtuse).

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, 1.8–3.2 mm, lateral pair not saccate basally;

petals yellow, narrowly spatulate, 3–5.5 × 1.5–2 mm, claw 1.5–3.5 mm, apex rounded;

median filaments 2–3.5 mm;

anthers oblong, 0.5–0.7 mm.

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

divaricate or ascending, slender, much narrower than fruit, 5–13(–16) 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.

suberect or divaricate-ascending, linear, straight, somewhat torulose, (1–)1.5–2.5(–4) cm × 1–1.3 mm, 4-angled, not striped;

valves with prominent midvein, pubescent outside, trichomes 3–5-rayed, densely pubescent inside;

ovules (20–)30–55 per ovary;

style cylindrical, slender, 0.5–1.5 mm;

stigma entire or 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, 1–1.5 × 0.4–0.6 mm;

not winged.

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

of leaves primarily 3- or 4-rayed, sometimes mixed with 5-rayed ones, 2-rayed trichomes primarily on stem and pedicels.

= 16.

= 16.