Flora of North America species comparison

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

erect, unbranched basally, often many-branched distally, (1.5–)2.5–12 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.

petiole 1–3.5(–5.5) cm;

blade pinnatifid, broadly lanceolate to oblanceolate or obovate in outline, 1.5–10(–13) cm, lateral lobes linear to oblong or narrowly lanceolate, [3–10(–15) × 1–3(–5) mm], margins entire.

sessile or shortly petiolate;

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

sessile or shortly petiolate;

blade smaller distally, distal lobes often narrower.

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 erect, yellowish, oblong, 1–1.8 mm, sparsely pubescent;

petals oblanceolate, 1.2–2 × 0.3–0.6 mm;

median filaments 1.4–2 mm;

anthers 0.3–0.4 mm.

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

erect to erect-ascending, straight, 2–8(–11) 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.

erect, (often strictly appressed to rachis), linear, slightly torulose, (4–)5–10(–15) × 0.7–1.2(–1.5) mm, (acute at both ends);

valves each with distinct midvein;

septum often with distinct midvein;

ovules 14–22 per ovary;

style 0.1–0.4 mm, glabrous.

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

uniseriate, reddish brown, ellipsoid to narrowly oblong, 0.8–1.2 × 0.4–0.5 mm.

= 28.

= 14, 28.