Flora of North America species comparison

erect, unbranched or branched distally, (1–)2–7(–10) dm.

erect, usually unbranched basally, branched distally or sometimes throughout, (1.3–)2–8.2(–10.7) dm.

petiole 0.1–2(–3) cm;

blade 2- or 3-pinnate, ovate or oblong to obovate in outline, to 15 cm, lateral lobes linear or oblong, (to 10 × 2 mm), margins entire.

petiole 0.5–4.7 cm;

blade pinnate, obovate to oblanceolate in outline, 1.5–10.3 cm, lateral lobes (2–9 pairs), ovate or oblong to lanceolate or linear, margins usually dentate to incised or entire, rarely pinnatifid or crenate.

sessile or shortly petiolate;

blade smaller distally, distal lobes often narrower, surfaces often glabrous.

sessile or shortly petiolate;

blade smaller distally, distal lobes oblong, lanceolate, linear, (margins dentate to denticulate or entire), surfaces pubescent or glabrous.

considerably elongated in fruit.

considerably elongated in fruit, (glandular or eglandular).

sepals erect to ascending, yellowish, oblong, 1.8–2.8 mm, glabrate to sparsely pubescent;

petals narrowly oblanceolate, 2–3 × 0.4–0.6 mm;

median filaments 2–3 mm;

anthers 0.3–0.4 mm.

sepals erect to ascending, yellowish, oblong to ovate, 1.6–2.4 mm, glabrous or pubescent;

petals narrowly oblanceolate, 1.7–2.8 × 0.5–0.9 mm;

median filaments 1.6–2.4 mm;

anthers 0.3–0.4 mm.

divaricate to ascending, straight, (5–)8–15(–20) mm.

ascending to divaricate or horizontal, straight, (3–)5–25(–30) mm.

divaricate-ascending to erect, narrowly linear, torulose, (12–)15–27(–30) × 0.5–0.8(–1) mm, (straight or curved upward);

valves each with distinct midvein;

septum with a broad central longitudinal band appearing as 2 or 3 veins;

ovules 20–48 per ovary;

style obsolete, 0.05–0.2 mm, glabrous.

erect to ascending, linear, slightly torulose, 8–20 × 0.9–1.3 mm, (straight or slightly to strongly curved inward);

valves each not veined or with distinct midvein;

septum not veined;

ovules 14–26 per ovary;

style 0.1–0.3 mm, glabrous.

uniseriate, reddish brown, oblong, 0.7–1.3 × 0.3–0.6 mm.

uniseriate, reddish brown, oblong, 0.9–1.3 × 0.5–0.6 mm.

= 28.