Tree 4.5–12(–21) m. high, unarmed, with grey, rough, scaly or fissured bark.. Young branchlets shortly pubescent or puberulous.. Leaves: petiole 2.5–6.6 cm. long, pubescent or puberulous as in the (0–)2.7–9.5 cm. long rhachis; pinnae (1–)2–4 pairs, glandular between most of the pairs of leaflets; leaflets opposite, in (5–)7–15 pairs, oblong-lanceolate or elliptic-lanceolate, (1.3–)1.5–3(–4) cm. long, 0.4–1(–1.5) cm. wide, narrowed to an usually acute or subacute apex, inconspicuously appressed-puberulous on both sides.. Flowers creamy-white or yellow-green, fragrant, sessile or nearly so, in 3–6 cm. long spikes borne on 1–3.5 cm. long peduncles.. Calyx 1.5–2 mm. long, puberulous.. Petals free, 3–4.5 mm. long, glabrous or nearly so outside.. Stamen-filaments 5.5–6.5 mm. long.. Ovary hairy.. Pods 10–20 cm. long, 1.5–3.3 cm. in diameter, black or brown, glossy, subcylindrical or slightly compressed, thickened.. Seeds ellipsoid, 8–10 mm. long, 4–9 mm. wide, blackish-brown, glossy.. Fig. 10, p. 35.
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A large tree. It can grow to 25 m high. The trunk is 80 cm across. It grows straight and un-buttressed in forests and low and crooked in open conditions. The crown is open. The leaves droop. The bark is very dark and scaly. The leaves are alternate and twice divided. The leaves are 10-15 cm long. There are 9-16 pairs of leaflets along 3-6 pairs of opposite leaflets stalks. The leaflets are oblong and 12-30 mm long. The flowers are pale green to yellow. They have a scent. The fruit are dark brown pods. They are thick and hard and 15 cm long by 3 cm wide. There are about 10 loose rattling seeds in each pod.
A savannah tree, to 40–60 ft. high
Flower-spikes yellowish, fragrant
Pods stout, roughly cylindrical
A tropical plant. It can grow in forest, savannah and Sahel in West Africa. It grows in areas with an annual rainfall between 400-1,200 mm. It grows between 720-1,220 m above sea level. It can grow in arid places.
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Frequently on fallow land, on sandy clayey soils over laterite. Savannah land, especially in mesophytic woodland.
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