Prostrate to erect shrub to 3 m tall. Phyllodes slightly sickle-shaped, 2-6 cm long, 0.5-3 cm wide, with prominent midvein (sometimes also additional veins), the margins conspicuously thickened and with 1 small gland, base often uneven. Flower clusters of 3-8 heads. Flower heads of 2-8 flowers, pale yellow; late winter to spring. Fruit pods woody, narrow, curved, 4-11 cm long, 3-5 mm wide. A prostrate form is also available.
A. argyrophylla Hook., Silver Mulga, from SA has leaves with silky hairs that are golden at first, becoming silvery; A. decora Reichb.,Western Silver Wattle, from Qld, NSWand Vic has phyllodes on raised stem projections.
Source: (2002). Mimosaceae. In: . Horticultural Flora of South-eastern Australia. Volume 3. Flowering plants. Dicotyledons. Part 2. The identification of garden and cultivated plants. University of New South Wales Press.