Flora of North America species comparison

erect, usually branched basally or slightly distally, rarely unbranched, (0.7–)0.9–3.2(–4.5) dm.

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

petiole 0.5–1.5 cm;

blade pinnate, ovate or oblong in outline, 0.8–2.5 cm, lateral lobe (2–5 pairs), margins dentate or 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, sparsely to moderately pubescent.

sessile or shortly petiolate;

blade smaller distally, distal lobes often narrower.

considerably elongated in fruit.

considerably elongated in fruit.

sepals ascending, yellowish, oblong, 0.7–1.2 mm, pubescent;

petals narrowly oblanceolate, 0.8–1.2 × 0.2–0.4 mm;

median filaments 1–1.5 mm;

anthers 0.1–0.2 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-ascending (often at 20–45º angle), straight, (1.5–)2.5–7(–10) mm.

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

erect or ascending, linear, not or slightly torulose, (0.4–)5–8(–10) × 0.7–1 mm;

valves each with distinct midvein;

septum not veined;

ovules 6–12 per ovary;

style 0.1–0.2 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, brown, oblong, 0.6–0.8 × 0.4–0.5 mm.

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

= 14.

= 14, 28.