Flora of North America species comparison

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

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

(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.

(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).

(distal) sessile;

blade margins entire or dentate-sinuate.

considerably elongated in fruit.

considerably elongated in fruit.

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.

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

divaricate-ascending, slender, narrower than fruit, 5–8 mm.

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.

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, 1–1.5 × 0.4–0.6 mm;

not winged.

oblong, 2–3.5 × 0.8–1.5 mm;

not winged or winged distally.

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

of leaves 2- or 3-rayed.

= 16.

= 36.