Vachellia grandicornuta (Gerstner) Seigler & Ebinger

Tree to 12 m high, crown ± rounded, often irregularly so, branches usually ascending. Bark grey to brownish-black or black, rough, longitudinally fissured; young branch-lets greyish to reddish-brown or purplish, lenticellate, glabrous, smooth, not flaking off to reveal a rusty-red inner layer. Stipules spinescent, in pairs, 0.2-10(14) cm long, straight or slightly curved, sometimes deflexed, typically stout and slightly swollen, whitish but becoming greyish with age; other prickles absent. Leaves: petiole 0.4-2 cm long, glabrous, eglandular or with a rounded to elliptic gland up to 1.5 x 1 mm, variable in position; rhachis 0-3.6 cm long, glabrous or subglabrous, a small gland at the junction of the top or top 1-3 pinnae pairs; pinnae (1)2-3(5) pairs; rhachillae 0.9-3.6(5.2) cm long, glabrous; leaflets 7-18 pairs per pinna, 3-8 x (1)1.5-2.5(3.2) mm, linear to linear-or obovate-oblong, apex obtuse or rounded, glabrous throughout or rarely margins minutely ciliate, lateral nerves invisible or slightly conspicuous beneath. Inflorescences capitate, on axillary peduncles, fascicled. Flowers white, sessile; peduncles 1.2-2.5 cm long, glabrous or occasionally very sparingly puberulous, eglandular; involucel 1/3-1/2-way up the peduncle. Calyx glabrous throughout or apices of lobes occasionally with a few hairs, tube 0.8-1.3 mm long, lobes up to 0.3 mm long. Corolla glabrous, tube 1.6-2.2 mm long, lobes up to 0.6 mm long. Stamen-filaments free, up to 5 mm long; anthers with a deciduous apical gland. Ovary up to 1 mm long, glabrous, very shortly stipitate. Pods brown to reddish-brown or purplish, (4.8)6-12.8(15.2) x 0.6-1.1 cm, falcate or occasionally straightish, sometimes irregularly constricted between some of the seeds, longitudinally dehiscent, valves rather thin, brittle, finely longitudinally veined, glabrous, attenuate basally. Seeds olive-brown, 6-10 x 5-7 mm, ± oblong, smooth, compressed; areole 4-6 x 2.5.4-5 mm.

It is a tropical plant.