Graceful tree 5–15 m tall; crowns silvery green, greyish green or blue-grey. Bark fissured on stem and branches, grey. Branchlets with pale longitudinal ridges, red-brown, shiny. Young shoots densely clothed with iridescent citron-green hairs (which age silvery white). Phyllodes narrowly elliptic, falcate, acute to acuminate, (5–) 6–12 (–17) cm long, (4–) 7–13 (–20) mm wide, coriaceous, densely sericeous, aging glabrous; finely multistriate (7–10 nerves per mm), with central nerve (and a nerve either side of it) subprominent; marginal nerve discrete, narrow, yellowish and not resinous; gland obscure, normally basal. Inflorescences simple; spikes 0.8–3.2 cm long, dense, bright yellow; peduncles 1–7 mm long, densely silvery appressed hairy (hairs rarely patent or pale yellow); receptacle normally with dense, pale yellow to golden (occasionally silvery white), spreading hairs, with indumentum sparser (rarely absent) in fruit. Flowers 5-merous; calyx c. 0.9 mm long, dissected more or less to base, with lobes linear-spathulate, villous; corolla c. 1.2 mm long, dissected to c. ½ of length, densely villous; ovary densely villous. Pods narrowly oblong, straight, 2–12 cm long, 10–15 mm wide, thinly coriaceous-crustaceous, velvety or sericeous with citron-green or silvery white hairs (especially when young). Seeds longitudinal, broadly elliptic to circular (almost globose), dorsiventrally flattened, 5–6.5 mm diam., black or dark brown; pleurogram surrounded by pale halo; areole elliptic, ±closed, cream-coloured to dark green; funicle filiform, cream-coloured.
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A small tree. The bark is rough and grey. The branches can hang downwards. The small branches are red brown and shiny with ribs along them. The leaves (phyllodes) are 8-12 cm long and 0.5-1.2 cm across. They are sickle shaped, green and with a bluish bloom. Young shoots have short hairs which are lemon green in colour. The flowers are like rods 2-3 cm long. They are yellow. The pods are 3.5-8 cm long and 0.7 to 1.5 cm wide. They are straight and brittle. They are light brown in colour. They also have yellow-green hairs.
Usually found along creeks and rivers in sandy rocky beds, and in stony soils in open forests away from watercourses, but always in water gaining situations.
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Normally found on the banks and floodplains of major river systems and some minor creeks.
It grows in sandy rocky creek beds. It needs a well drained soil and sunny position.
A moderately fast growing species with a long life span (over 40 years), good coppicing ability and a propensity to root sucker. It has horticultural potential for arid and semi-arid areas but is likely to need supplementary watering for successful establishment. Details of the utilisation of Acacia citrinoviridis are given by J.C. Doran et al., in J.C. Doran & J.W. Turnbull (eds), Australian Trees and Shrubs: Species for Land Rehabilitation and Farm Planting in the Tropics 126–127 (1997).
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The seeds are coarsely ground then eaten uncooked.
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