Bushy, spreading, more or less rounded, compact shrubs 1-5 m high; branchlets slightly angular or ribbed, light green, smooth. <P>Phyllodes linear or linear-oblong, 3-9 cm long, 3-10 mm broad, flat, rather thick, wrinkled when dry, glabrous erect or spreading, 1-veined and usually terminating with a small, hard, short oblique mucro, margins yellowish vein-like; glands small, one usually at the apex below the point and one on the upper margin below the centre towards the base. <P>Inflorescences axillary and solitary or mostly in racemes, much shorter than phyllodes, consisting of 2-5 sparsely arranged heads; flower-heads globular, bright yellow, c. 20-flowered; flowers 5-merous. <P>Legumes linear, 5-10 cm long, 4-10 mm broad, thick, hard, woody, light brown, margins thickened, more or less constricted between seeds, readily breaking into 1-seeded segments. Seeds longitudinal in legume, ovoid; funicle scarlet or yellow, often twisted with 2-3 folds below the seed.