Flora of North America species comparison

erect, unbranched or branched distally, 1.5–7 dm.

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

blade linear to linear-oblanceolate, 1.5–6(–8) cm × 2–8 mm, base attenuate, margins entire or dentate, apex acute.

(often withered by fruiting);

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

(distal) sessile;

blade margins entire or denticulate.

(distal) sessile;

blade margins entire or denticulate.

elongated or not in fruit.

considerably elongated in fruit.

sepals oblong to linear-oblong, 4–6 mm, lateral pair slightly saccate basally;

petals yellow, oblanceolate, 6–9(–11) × 1–2 mm, claw 5–7 mm, apex rounded;

median filaments 5–7 mm;

anthers narrowly oblong to linear, 1–2 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-ascending to ascending, stout, slightly narrower than fruit, 4–9(–15) mm.

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

ascending to divaricate-ascending, (not appressed to rachis), narrowly linear, straight, not torulose, 3–5.8(–7) cm × 1–1.5(–1.8) mm, slightly 4-angled or terete, not striped;

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

ovules 36–66 per ovary;

style cylindrical, stout, 0.7–3 mm, moderately to sparsely pubescent;

stigma strongly 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.

ovoid, 1.2–1.7 × 0.8–1 mm;

not winged or wing apiculate.

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

of leaves 2- or 3-rayed.

of leaves 2- or 3-rayed.

= 81.

= 36.