Flora of North America species comparison

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

erect, unbranched basally, branched distally, 6–11 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 0.5–1.5 cm;

blade pinnate, oblanceolate to obovate or ovate in outline, 1–5 cm, lateral lobes (2–5 pairs), linear, margins entire or serrate to incised (apex obtuse).

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 densely pubescent.

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

(paniculate, often with short branches), 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 spreading, yellowish, oblong, 1.4–2 mm, pubescent, (trichomes dendritic, sometimes mixed with simple ones);

petals oblanceolate, 0.7–1 × 0.1–0.2 mm;

median filaments 1.5–2 mm;

anthers 0.2–0.3 mm.

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

divaricate-ascending, straight, 4–7(–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.

divaricate to erect, linear to oblong, not torulose, 3–8(–10) × 1–1.2 mm;

valves each with distinct midvein;

septum not veined;

ovules 10–28 per ovary;

style obsolete to 0.1 mm, glabrous.

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

biseriate, light brown, ellipsoid, 0.5–0.7 × 0.3–0.4 mm.

= 14.

= 42.