Each leaf tapers to a sharp spine, and the species is distinguished for its broadened leaf base running down the stem giving a winged effect. The entire plant is smooth and hairless. Foliage is of the type known as phyllodes and is often found in Wattles of dry or hot regions. A phyllode is a flattened leaf stalk which has probably evolved as a means of conserving moisture in dry areas.
Phyllodes are generally thicker, joining the stems firmly,with edges facing the sun.
Some resemble Eucalypt leaves, but as they have no scent when bruised they are easily recognised as Acacias. For the gardener, however, they give a wide choice in ornamental foliage which tends to be strong and unblemished. In the open, with deep light soil, weeded and watered, an isolated shrub is fairly heavy and spreads about 5 m along the ground. The form is dense and shapely with long curving branches in various directions, rising to 1.5 m high. Older, rough branches are 6 cm diameter at ground level, and before a plant reaches this size some trimming may be advisable to avoid splitting at the centre.