Flora of North America species comparison

compound, 80–170 mm;

petiole 8–22 mm, densely puberulent, gland present, below proximalmost pinna pair, 0.5–1 mm diam., puberulent;

rachis gland between most pinna pairs;

pinnae 6–30 pairs, 15–55 mm, 2–7 mm between pinna pairs;

leaflets 15–70 pairs per pinna, blades linear, 2–5 × 0.4–0.8 mm, base cuneate, apex obtuse to acute, not apiculate, surfaces densely 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, 6–9 mm diam., in axillary pseudoracemes of 11–30 heads or terminal pseudopanicles of 1–15 pseudoracemes.

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

2–6 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, oblong, 20–110 × 6–14 mm, constricted between some seeds.

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

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

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

= 26.

= 26.