Flora of North America species comparison

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

dark reddish brown, not flexuous, ridged, glabrous.

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;

phyllode flat, not falcate, narrowly elliptic, 50–150 × 10–25 mm, venation parallel, with 2–4 prominent veins, minor veins prominent, apex acute to obtuse, apiculate, surfaces glabrous;

gland 1, 0–7 mm distal to pulvinus;

pulvinus 2–5 mm.

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, 20–50 × 5–8 mm, solitary or in fascicles of 2 or 3 in leaf axils.

4–9 mm.

0–2 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.

4-merous, bright yellow;

calyx 0.6–0.9 mm;

corolla 1.5–2.1 mm;

filaments 2.6–3.6 mm;

ovary pubescent.

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

elliptic in cross section, linear, 50–150 × 5–9 mm, somewhat constricted between seeds.

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

aril light yellow, folded several times into thickened, lateral, skirtlike aril covering seed apex.

= 26.