Flora of North America species comparison

erect, unbranched or branched distally, (1–)2–7(–10) dm.

erect, branched basally and distally, (often purplish), (1–)1.5–3.2(–4.1) dm.

petiole 0.1–2(–3) cm;

blade 2- or 3-pinnate, ovate or oblong to obovate in outline, to 15 cm, lateral lobes linear or oblong, (to 10 × 2 mm), margins entire.

(soon withered);

petiole 0.3–1.3 cm;

blade pinnate, oblanceolate to obovate in outline, 1.5–3 cm, lateral lobes oblong to linear or lanceolate, (1–5 × 0.3–1 mm), margins entire or dentate.

sessile or shortly petiolate;

blade smaller distally, distal lobes often narrower, surfaces often glabrous.

sessile;

blade smaller distally, distal lobes often narrower, surfaces moderately to densely pubescent.

considerably elongated in fruit.

considerably elongated in fruit.

sepals erect to ascending, yellowish, oblong, 1.8–2.8 mm, glabrate to sparsely pubescent;

petals narrowly oblanceolate, 2–3 × 0.4–0.6 mm;

median filaments 2–3 mm;

anthers 0.3–0.4 mm.

sepals spreading to ascending, pale yellow, oblong, 0.8–1.2 mm, pubescent;

petals oblanceolate, 0.9–1.3 × 0.2–0.5 mm;

median filaments 0.8–1.2 mm;

anthers 0.1–0.2 mm.

divaricate to ascending, straight, (5–)8–15(–20) mm.

divaricate to ascending, straight, 2.5–7(–9) mm.

divaricate-ascending to erect, narrowly linear, torulose, (12–)15–27(–30) × 0.5–0.8(–1) mm, (straight or curved upward);

valves each with distinct midvein;

septum with a broad central longitudinal band appearing as 2 or 3 veins;

ovules 20–48 per ovary;

style obsolete, 0.05–0.2 mm, glabrous.

divaricate to erect, usually obovoid to clavate, rarely broadly ellipsoid, not torulose, 2–5 × 1–2 mm, (acute basally, obtuse apically);

valves each with obscure midvein;

septum not veined;

ovules 4–10 per ovary;

style 0.05–0.3 mm, glabrous.

uniseriate, reddish brown, oblong, 0.7–1.3 × 0.3–0.6 mm.

uniseriate or biseriate, brown, oblong, 0.8–1.2 × 0.5–0.6 mm.

= 28.