Flora of North America species comparison

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

dark reddish brown, not flexuous, prominently ridged, 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.

phyllodic; fascicled or whorled;

phyllode quadrangular, straight, linear, acicular, 5–20 × 0.5–1.5 mm, venation parallel, midvein prominent, minor veins not obvious, apex acuminate, sharp-pointed, surfaces mostly glabrous;

gland 1 (usually not obvious, disc-shaped), 3–6 mm distal to leaf base;

pulvinus absent.

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

cylindrical spikes, densely flowered, 10–45 × 4–7 mm, solitary in leaf axils.

4–9 mm.

2–12 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, pale yellow;

calyx 0.5–0.8 mm;

corolla 1.1–1.6 mm;

filaments 2.2–3.2 mm;

ovary glabrous.

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

flattened, linear, 20–90 × 2.7–5 mm, not constricted between seeds.

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

aril light yellow, folded and thickened, forming cap on seed.

= 26.

= 26.