Flora of North America species comparison

dark purplish brown to black, slightly flexuous, ridged, puberulent.

dark purplish brown to nearly black, not flexuous, ridged, pruinose, glabrous or pubescent.

compound, 50–140 mm;

petiole 5–30 mm, puberulent, gland present, below proximalmost pinna pair, 0.7–1.5 mm diam., puberulent;

rachis glands scattered, with some between pinna pairs (at pinna pair nodes and internodes);

pinnae 7–31 pairs, 15–70 mm, 3–7 mm between pinna pairs;

leaflets 20–70 pairs per pinna, blades linear, 1.5–3.5 × 0.5–0.8 mm, base cuneate, apex obtuse, not apiculate, surfaces puberulent.

compound, 10–33 mm;

petiole 0–2 mm, glabrous, gland absent;

pinnae 2–5 pairs, 10–28 mm, 4–9 mm between pinna pairs;

leaflets 8–24 pairs per pinna, blades oblong, 3.5–7.5 × 0.8–1.3 mm, base obtuse, apex obtuse to acute, not apiculate, surfaces glabrous.

globose heads, densely flowered, 5–9 mm diam., in axillary pseudoracemes of 20–35 heads or terminal pseudopanicles of 1–10 pseudoracemes.

globose heads, densely flowered, 4–8 mm diam., in axillary pseudoracemes of 8–35 heads or terminal pseudopanicles of 1–15 pseudoracemes.

4–9 mm.

2–6 mm.

5-merous, pale yellow to cream;

calyx 0.6–1.1 mm;

corolla 1.4–2 mm;

filaments 3.5–4.5 mm;

ovary glabrous.

5-merous, bright yellow;

calyx 0.4–0.9 mm;

corolla 1.2–2 mm;

filaments 2.5–3.5 mm;

ovary glabrous.

flattened, linear, 30–140 × 4–8 mm, slightly constricted between seeds.

flattened, oblong, 30–150 × 7–13 mm, sometimes slightly constricted between some seeds.

aril light yellow, obovate, 1–2 mm, forming cap on seed.

aril light yellow, obovate, 2–3 mm, forming small cap on seed.

= 26.

= 26.