Shrub or small tree developing a rounded canopy and growing 5-10 m tall, with ridged, waxy branchlets. Leaves grey-blue, bipinnate. Pinnae short-stalked, of 2-6 pairs (the lowest pair very short), each having 12-20 pairs of tiny leaflets 5-8 mm long, 1-1.5 mm wide, flat and slightly curved. Flower clusters axillary, longer than the leaves. Flower heads globular; winter to spring. Fruit pods 5-12 cm long, 8-15 mm wide, flattish, mealy-grey when young.
NSW (Cootamundra and Wagga Wagga area). Widely naturalised in all states except WA and NT. A. pubescens (Vent.) R. Br. from NSW has pale green leaves with 3-10 pairs of pinnae each 1-2 cm long, and branchlets covered with stiff hairs.
Blue-grey bipinnate leaves.
VIC: Balwyn (Maranoa Gds); Burnley (College grounds).
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.