Senegalia galpinii (Burtt Davy) Seigler & Ebinger

Tree to 36 m high; trunk to 2 m diam.; crown often rounded. Bark pale to dark yellowish-or greyish-brown to blackish, corky when young, rough, often longitudinally fissured, sometimes with scattered persistent prickles arising from swollen bases; young branchlets yellowish-or olive-brown to dark reddish-brown or purplish, glabrous or subglabrous to pubescent. Stipules not spinescent, in pairs, 1-3.5 x 0.2-0.8 mm, soon deciduous. Prickles in pairs just below the nodes, recurved or almost straight, often broad-based, dark reddish-brown to black, up to 1.2 cm long, rarely absent. Leaves: petiole (0.6)1.4-3.6(4.8) cm long, adaxial gland usually present, variable in position, round or oval, 0.6-1.5 x 0.4-1 mm; rhachis (2.6)5.5-11(14.2) cm long, subglabrous to pubescent, abaxial surface sometimes with recurved prickles, with a gland at the junction of the top 1-6 pinnae pairs, occasionally at the junction of all or nearly all pinnae pairs or absent altogether; pinnae (4)7-14 pairs; rhachillae (2.5)3-6.5(9.2) cm long, glabrous to pubescent; leaflets 12-35(45) pairs per pinna, (3)4-10(12) x 0.8-3 (3.8) mm, oblong to linear-oblong, the upper sometimes obovate, often slightly falcate, apex rounded to subacute, veins not very prominent beneath, glabrous except for the frequent presence of a small basal tuft of hairs abaxially, rarely sparingly pubescent beneath, margins with or without cilia. Inflorescences spicate, fascicled or solitary, often borne on short lateral shoots. Flowers cream to yellowish-white, sessile; spikes (3.2)5-10 cm long; peduncles 0.3-1.3 cm long, glabrous to sparingly or densely pubescent. Calyx cupular, red or purple, 0.75-1.25 mm long, ± puberulous or sometimes subglabrous or glabrous. Corolla red or purplish, subglabrous to puberulous, especially towards the apices of the lobes, tube up to 1.6 mm long, lobes up to 1.4 mm long. Stamen-filaments yellowish-white, free, 4-6 mm long; anthers 0.15-0.2 mm across, with a deciduous apical gland. Ovary glabrous, 0.8-1.5 mm long, on a stipe up to 0.8 mm long. Pods reddish-to purplish-brown, 11-28 x 2.3-3.5 cm, straight, apex acute to mucronate, longitudinally dehiscent, valves thinly woody but brittle, venose, slightly umbonate over the seeds, glabrous or almost so. Seeds olive-brown, subcircular-lenticular, 8-12(15) x 8-12.5 mm, compressed; central areole 5-8 x 3.5-7 mm, horseshoe shaped.

Riverine woodland, but it can also be found scattered on termite mounts and in open woodland, at elevations from 350-1,500 metres.

Can be grown by seedlings. Seeds needs soaking.