Flora of North America species comparison

erect, unbranched or sometimes branched distally, (0.5–)1.5–11(–18) dm.

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

petiole 0.5–5 cm;

blade pinnate or, sometimes, 2-pinnate, broadly oblanceolate to ovate in outline, 2.5–11.4(–15.2) cm, lateral lobes lanceolate, (to 10 × 4 mm), margins incised.

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 or sparsely pubescent.

sessile or shortly petiolate;

blade smaller distally, distal lobes often narrower.

elongated or not in fruit, (flowers overtopped by developing fruits).

considerably elongated in fruit.

sepals erect, yellowish, oblong, 1.6–2.7 mm, glabrous;

petals narrowly oblanceolate, 2–2.5 × 0.3–0.6 mm;

median filaments 2.5–3.5 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, (often recurved in age), slender, (3–)4–9(–13) mm.

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

erect to widely spreading, narrowly linear, slightly torulose, (9–)14–30(–34) × 0.6–1.1 mm, (usually terete, rarely slightly flattened, often curved inward);

valves each with obscure midvein;

septum not veined;

ovules 30–62 per ovary;

style obsolete, 0.07–0.3 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, light brown, narrowly oblong, 1–1.5 × 0.3–0.5 mm.

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

= 14.

= 14, 28.