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 1-3(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 ± spinulose-mu