Shrub often with many stems, or a tree to 7 m high; crown rounded or flattened and spreading. Bark pale to dark yellowish-or greyish-brown, rough, the outer layer papery and flaking off; young branchlets pale yellowish or grey to greyish-brown, puberulous to pubescent, with few to many small reddish glands intermixed. Stipules not spinescent, in pairs, linear, 2-4.5 x 0.2-0.8 mm, soon deciduous. Prickles in pairs below the nodes, usually strongly recurved, broad-based, grey-brown to reddish-brown or purplish, up to 1 cm long. Leaves: petiole 0.3-1(1.3) cm long, adaxial gland variable in position, elliptic or discoid, 0.8-2.2 x 0.4-1.1 mm, reddish-brown to black; rhachis (0.7)1.8-5.6(7.5) cm long, puberulous to densely pubescent, with few small reddish glands intermixed, without a conspicuous gland at the junction of any of the pinnae pairs; pinnae (4)8-16(20) pairs; rhachillae 0.7-2.9 cm long, puberulous to densely pubescent; leaflets 9-28(35) pairs per pinna, 2-5(6.5) x 0.5-1.2(1.6) mm, linear-oblong, straight or almost so, apex rounded to obtuse or subacute, veins often prominent beneath at first but becoming obscure with age, glabrous or sparingly to densely appressed-pubescent below, margins usually with spreading cilia. Inflorescences spicate, solitary or paired, sometimes forming a terminal panicle. Flowers yellowish-white, sessile; spikes (1.8)2.6-5.4(6.5) cm long; peduncles 0.6-2.4 cm long, puberulous to densely pubescent. Calyx often olive-green, puberulous to densely pubescent, sometimes subglabrous, tube 1.3-2.5 mm long, lobes 0.6-1.2 mm long. Corolla glabrous or slightly puberulous, especially towards the apices of the lobes, tube up to 3.2 mm long, lobes up to 1.4 mm long. Stamen-filaments free, up to 9 mm long; anthers 0.2-0.25 mm across, with a deciduous apical gland. Ovary 0.7-1.5 mm long, glabrous or puberulous, stipitate. Pods fawn to dark brown, 4-13.5 x 1.1-2(2.3) cm, linear-oblong, straight, rounded to acute or sometimes rostrate apically, longitudinally dehiscent, venose, coriaceous, puberulous to subglabrous, with numerous small reddish glands. Seeds olive-brown, subcircular, 8-12.5 x 8-12 mm, compressed; areole 1-4 x 1-3 mm, horseshoe shaped.
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Shrub or tree, up to 7 m high. Leaf rhachis eglandular; leaflets straight, mostly shorterthan 5 mm; petiole 3-13 mm long, petiolar gland 0.8-2.2 mm long, flattened, elliptic or oval. Flowers yellowish white.
Can be grown by seedlings. Seeds needs soaking.