Vachellia swazica (Burtt Davy) Kyal. & Boatwr.

Slender shrub, often several stemmed, or small slender tree with short ascending branches up to 3 m high. Bark grey-to yellowish-or reddish-brown, sometimes flaking to reveal a yellowish inner layer; young branchlets grey-or reddish-brown to purplish, sometimes flaking minutely, glabrous except for scattered conspicuous reddish sessile pustular glands, often glutinous. Stipules spinescent, in pairs, 0.6-7.4 cm long, straight or slightly deflexed, slender, whitish, glabrous; other prickles absent. Leaves: petiole 0.3-1.9 cm long, glabrous or subglabrous, adaxial gland absent; rhachis 0-1.8(4.4) cm long, glabrous or subglabrous, often with a small sessile to shortly stipitate gland at the junction of each pinna pair, otherwise with small scattered glands; pinnae 0-3(5) pairs; rhachillae 0.6-2.9 cm long, glabrous, usually with small scattered glands; leaflets 3-7(9) pairs per pinna, (2)4-9(13) x (1)1.5-5.1 mm, lanceolate to obovate-oblong or broadly obovate, glabrous, margins entire, eglandular or with few very inconspicuous glands towards the apex, lateral nerves ± prominent and conspicuous beneath, apex spinulose-mucronate. Inflorescences capitate, on axillary peduncles, solitary or fascicled along shoots of the current or previous season. Flowers bright yellow, sessile or very shortly pedicellate; peduncles 1.4-4.7 cm long, glabrous or subglabrous, sparingly to densely glandular; involucel at or above the middle of the peduncle, large, 2-5 mm long. Calyx glabrous, tube 1.4-1.8 mm long, lobes up to 0.5 mm long. Corolla glabrous, tube 1.8-2.6 mm long, lobes up to 0.6 mm long. Stamen-filaments free, up to 4.8 mm long; anthers with a deciduous apical gland. Ovary shortly stipitate, glabrous, up to 1.8 mm long. Pods pale to dark yellowish-or chestnut-brown, (1.5)2-6 x 0.7-1.2 cm, slightly to strongly falcate, subcoriaceous, venose, longitudinally dehiscent, with numerous conspicuous dark sessile pustular glands, slightly glutinous, glabrous. Seeds olive to olive-brown, 4-7 x 4-6 mm, elliptic to subcircular, compressed; areole 2.5-4 x 2.5-4 mm.