Vachellia permixta (Burtt Davy) Kyal. & Boatwr.

Many stemmed shrub or a small tree up to 4 m high with slender weakly ascending branches. Bark pale to dark chestnut or reddish-brown; young branchlets sparingly to densely hairy or tomentose with spreading grey to whitish hairs 0.75-2 mm long among which some conspicuous reddish sessile glands are scattered, epidermis sometimes splitting to reveal a reddish-brown inner layer. Stipules spinescent, in pairs, up to 6.5 cm long, straight or often slightly deflexed, slender, whitish, tips often reddish-brown; other prickles absent. Leaves: petiole 0.3-1.7 cm long, sparingly to densely clothed with spreading hairs, adaxial gland absent; rhachis 0-4.2 cm long, sparingly to densely clothed with spreading hairs, with scattered conspicuous sessile reddish glands, a small raised columnar gland at the junction of the top 1-3 pinnae pairs or absent; pinnae 1-5(7) pairs; rhachillae 0.4-2.8 cm long, with irregularly scattered sessile reddish glands in amongst the spreading pubescence; leaflets 3-10 pairs per pinna, 2.2-7 x 0.9-2(2.9) mm, linear-to obovate-oblong or obovate, eglandular or sometimes with a few glands on the margins towards the apex but margins not crenulate, glabrous or sometimes sparingly pubescent below, margins with few to many spreading cilia, lateral nerves inconspicuous beneath, at least some leaflets spinulose-mucronate apically. Inflorescences capitate, on axillary peduncles, solitary or fascicled. Flowers bright yellow, sessile; peduncles 1.2-3(4.2) cm long, sparingly to densely clothed with spreading hairs, with scattered sessile reddish glands; involucel at or above the middle of the peduncle, 2.5-3.5 mm long. Calyx glabrous or sparingly pubescent especially on apices of the lobes, tube 1.4-2.2 mm long, lobes up to 0.7 mm long. Corolla glabrous or subglabrous, tube 2-3.2 mm long, lobes up to 0.9 mm long. Stamen-filaments free, up to 5 mm long; anthers with a deciduous apical gland. Ovary up to 1.8 mm long, shortly stipitate, glabrous. Pods pale to dark yellowish-or reddish-brown, (2)2.7-5(8.9) x 0.6-1.4 cm, slightly to strongly falcate, not or scarcely constricted between the seeds, with few to many conspicuous dark reddish-brown ± raised glands scattered over the surface, otherwise glabrous or subglabrous, longitudinally dehiscent, venose, apex obtuse, acute or sometimes mucronate. Seeds olive to olive-brown, 5-8 x 4-6.5 mm, subcircular to elliptic, compressed; areole 2-4 x 1.5-2.5 mm.