Unarmed shrub or small tree up to 6 m high; young branchlets usually angular and glabrous. Leaves phyllodic, apparently simple, glabrous, 3-9 x 0,6-1,5 cm, narrowly-oblong, usually ± straight, some­times slightly falcate, obliquely mucronate apically, narrowed basally, with 3-5 promi­nent longitudinal nerves and anastomosing almost longitudinal veins. Inflorescences glo­bose, solitary or two or three in short axillary racemes. Flowers bright yellow; peduncles up to 7 mm long. Calyx pubescent apically, more than half as long as the corolla. Petals free. Pods brown, 5-15 X 0,8-1,3 cm, oblong, falcate or variously coiled or spirally twisted, flattened, margins not constricted between the seeds, dehiscing longitudinally along both margins. Seeds dark brown, 5-7 x 3-4 mm, smooth, compressed; areole ±4x2 mm; funicle thickened, bright red or orange, encircling the seed in a double fold.