Trees, 10-25 m tall, deciduous. Bark gray-brown to dark brown, longitudinally fissured, rarely smooth. Branchlets gray-brown, sparsely hairy, glabrescent; stipulate spines up to 2 cm; winter buds small, with hairs. Leaves 10-25(-40) cm; rachis adaxially grooved; petiolule 1-3 mm; stipel acicular; leaflets 2-12 pairs, usually opposite or subopposite; leaflet blades oblong, elliptic, or ovate, 2-5 × 1.5-2.2 cm, abaxially grayish green and with appressed pubescence when young but glabrescent, adaxially green, base rounded to broadly cuneate, margin entire, apex rounded, retuse, and apiculate. Racemes axillary, 10-20 cm, pendulous, many flowered, fragrant; bracts caducous. Pedicel 7-8 mm. Calyx obliquely campanulate, 7-9 mm; teeth 5, triangular to ovate-triangular, densely appressed pubescent. Corolla white, stipitate; standard suborbicular, ca. 1.6 × 1.9 cm, reflexed, inside with yellow spots, base rounded, apex with a sinus; wings obliquely obovate, subequal to standard, ca. 16 mm, one lateral auriculate rounded; keel falcate, triangular, equal to wings or slightly short, connate at leading edge, obtuse. Stamens diadelphous, one opposite to standard free. Ovary linear, ca. 1.2 cm, glabrous; stalk 2-3 mm; style subulate, ca. 8 mm, apically curved, apex piliferous; stigma terminal. Legume brown or with reddish brown stripes, linear-oblong, 5-12 × 1-1.3(-1.7) cm, compressed, apex volute and mucronate, carpopodium short, narrow wings along ventral suture; calyx persistent, 2-15-seeded. Seeds brown to dark brown, slightly glossy, sometimes with stripes, subreniform, 5-6 × ca. 3 mm; hilum rounded, oblique to one end. Fl. Apr-Jun, fr. Aug-Sep. 2n = 20, 22.
"Tree to 25 m, the twigs and peduncles puberulent, becoming subglabrous; stipules commonly modified into spines 1 cm; lfls 7–19, oval or elliptic, 2–4 cm; racemes drooping, many-fld, 1–2 dm; fls white, fragrant, 1.5–2.5 cm; cal finely hairy, the upper lip truncate or broadly notched; ovary glabrous; fr 5–10 cm; 2n=20. Native from Pa. and s. Ind. to Okla., s. to Ga. and Ala., and often escaped from cult. n. to N.S. and Que. May, June."
Bis 25 m hoher Baum oder Strauch mit dornigen Zweigen. Borke mit tiefen Längsrissen. Blätter unpaarig gefiedert, mit 3–10 Fiederpaaren. Teilblätter oval, ganzrandig, 2–5 cm lang. Blüten weiss, wohlriechend, in lockeren, hängenden Trauben. Fr
Shrub or tree, up to 10 m high; robust, hard-wooded; bark thick, deeply furrowed, blackish. Leaves imparipinnate; stipules usually paired; spinescent. Flowers: intensely fragrant; in many-flowered racemes; corolla 15-20 mm long, white; Sep. Pods 50-100 mm long, with 4-10 seeds, not in distinct compartments.