Flora of North America species comparison

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

(several to numerous from base), decumbent, usually unbranched, rarely branched distally, 0.4–1.5 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 0.3–1.4 cm;

blade pinnate, oblanceolate in outline, 0.9–3.5 cm, lateral lobes (3–5 pairs), oblanceolate to oblong, (2–5 × 0.5–1.5 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, surfaces moderately pubescent.

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 ascending, yellowish, oblong, 0.9–1.2 mm, pubescent;

petals narrowly oblanceolate, 1.4–2 × 0.4–0.6 mm;

median filaments 1.6–2 mm;

anthers 0.2–0.3 mm.

divaricate to ascending, (often recurved in age), slender, (3–)4–9(–13) mm.

erect to erect-ascending, straight, 1.5–3 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, (subappressed to rachis basally), narrowly linear, strongly torulose, 6–15 × 0.6–0.8 mm, (curved outward distally);

valves each with obscure midvein, (pubescent);

septum not veined;

ovules 10–18 per ovary;

style obsolete, 0.1–0.3 mm, sparsely pubescent.

uniseriate, light brown, narrowly oblong, 1–1.5 × 0.3–0.5 mm.

uniseriate, reddish brown, oblong, 1–1.3 × 0.5–0.6 mm.

= 14.