Flora of North America species comparison

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

(simple from base), erect, usually unbranched, rarely branched distally, 0.1–0.15 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 0.3–0.6 cm;

blade pinnate, oblanceolate in outline, lateral lobes (2–4 pairs), oblanceolate to obovate, (1–2.5 × 0.5–1 mm), margins entire.

sessile or shortly petiolate;

blade smaller distally, distal lobes often narrower, surfaces often glabrous or sparsely pubescent.

subsessile;

blade smaller distally, distal lobes narrower, surfaces sparsely pubescent.

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

not 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, ovate, 1–1.4 mm, pubescent;

petals narrowly oblanceolate, 1–1.5 × 0.3–0.4 mm;

median filaments 0.6–1 mm;

anthers (broadly ovate), ca. 0.1 mm.

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

erect to ascending, straight, 1–1.5 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, linear, torulose, 6–10 × 1–1.3 mm, (straight);

valves each with distinct midvein;

septum with distinct midvein;

ovules 4–8 per ovary;

style obsolete, 0.1–0.2 mm, glabrous.

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

uniseriate, reddish brown, oblong, 1–1.2 × 0.5–0.6 mm.

= 14.