Medium sized trees to 12 m high, in eastern States it may obtain a height up to 30 m, canopy rounded and glaucous; branches angular, striate, pruinose and hoary with a minute pubescence; bark smooth, grey-brown to dark grey on the trunk, suckers freely if the roots are damaged. <P>Leaves bipinnate; petiole 0.5-2 cm long; rachis 2-10 cm long, angular, pubescent, with a raised gland on the upper surface at the junction of each pair of pinnae; pinnae 10-26 pairs; pinnules 20-50 pairs crowded, linear-oblong, more or less densely pubescent, 2-5 mm long, 0.4-0.7 mm broad, <P>Inflorescences racemose or panicled; flower-heads lemon to bright yellow, sweet-scented, 25-35-flowered; peduncles pubescent, c. 6 mm long; flowers 5-merous. <P>Legumes oblong, 5-8 cm long, 8-12 mm broad, straight or slightly curved, flat but raised over seeds, glaucous or light purplish-brown, margins slightly constricted. Seeds longitudinal in legume, ellipsoid; funicle short, expanded into a small aril.