Flora of North America species comparison

spreading, ascending, or erect, glandular or eglandular, glabrous or pubescent.

stipules subpersistent, lanceolate-ovate to deltate or suborbiculate, 3–4 mm, stiff to hard, fringed on margins, apex acuminate to rounded, surfaces pubescent, margins fimbriate-glandular;

petiole 1.5–3 cm, with broad pulvinus at base, pulvinus channeled, glabrous or short-hairy;

rachis 9.5–21.5 cm, glabrous or sparsely red-glandular;

pinnae 8–15 pairs, opposite (proximally) to alternate (distally), also with terminal pinna;

leaflets in 7–11 opposite pairs, blades oblong-elliptic to narrowly ovate, 6–11 × 2–3 mm, margins thickened, apex acute, midvein evident abaxially, surfaces glabrous;

blades with submarginal row of black, punctate glands, these sometimes sparse or absent.

alternate, odd-bipinnate;

stipules present, caducous or persistent, ovate-lanceolate to orbiculate; petiolate or short-petiolate;

pinnae 2–15 pairs, alternate, opposite, or subopposite;

stipels present;

leaflets 7–23, opposite, blade margins entire, sometimes revolute, surfaces glabrous or pubescent, often glandular-punctate with conspicuous black, sessile glands along margins, these sometimes sunken in sinuses of crenulated margin.

30–40-flowered, terminal;

axis spreading-pubescent, densely stipitate-glandular with pixie-cup glands;

bracts caducous before anthesis, lanceolate-ovate, 18–23 mm, apex acuminate, pubescent with fimbriate-glandular margins.

6–40+-flowered, axillary or terminal, racemes;

bracts present, persistent or caducous.

unarticulate, 20–30 mm, abscising at base only, spreading-pubescent and densely stipitate-glandular with pixie-cup glands.

calyx lobes 18–25 mm, margins capitate-glandular ciliate, fringed at tip and slightly fringed on outer margin, abaxially short-pilose and capitate-glandular, adaxially glabrous;

petals not clawed, blades glabrous and eglandular;

banner broadly obovate, 22–32 × 17–20 mm, without appendage;

lower laterals broadly obovate, 22–32 × 12–16 mm;

upper laterals broadly obovate, 22–32 × 16–18 mm;

filaments crimson, 70–95(–120) mm, pubescent on proximal 1/3;

anthers 3 × 1.5 mm;

ovary densely pubescent and stipitate-glandular;

style crimson, 90–100(–120) mm, pubescent on at least proximal 1/3;

stigma a terminal, funnel-shaped, unfringed chamber.

caesalpinioid, monomorphic, androecium and gynoecium free, not cupped in lower sepal;

calyx zygomorphic, persistent, margins fimbriate-glandular, lobes 5;

corolla yellow (or orange, red, or white in ornamental plants);

stamens 10, distinct;

anthers versatile.

legumes, sessile, flattened, straight or falcate, lanceolate-oblong, elastically dehiscent, subligneous, leathery, glandular or eglandular, pubescent or glabrous.

8–10.8 × 1.9–2.1 cm, subligneous, finely pubescent, glandular with stipitate, pixie-cup glands, these wearing off as fruit matures.

1–6, 10 × 9 mm.

(1–)3–6, brown, ovate.

= 12.

= 24.