Tree 5–20 m high. Bark smooth, fissured on older stems, grey or grey-brown. Branchlets with prominent lenticels, glabrous or sometimes sparsely appressed-puberulous. New shoots glabrous or sparsely appressed-puberulous, the hairs white or golden. Phyllodes very narrowly elliptic, elliptic or oblong-oblanceolate, falcate to subfalcate or sometimes ± straight, (7–) 10–20 cm long, (5–) 6–25 (–35) mm wide, chartaceous to thinly coriaceous, with 1–5 prominent longitudinal veins; minor veins numerous, longitudinally anastomosing; gland inconspicuous, (4–) 6–10 mm above pulvinus. Inflorescences simple or sometime vestigial racemes; peduncles 1–4 mm long, ± appressed-puberulous with hairs white or golden; receptacles hairy as on peduncles; spikes 2.5–6 cm long, somewhat loosely flowered, white to cream or pale yellow. Flowers mostly 4-merous; calyx 0.4–0.6 mm long, dissected to ¼–⅓ of length, densely pubescent; corolla 1.2–1.7 mm long, dissected to ½–⅔ of length, glabrous; ovary densely pubescent. Pods variably twisted or curled into loose spirals, subterete, 5–14 cm long, 2.5–4 (–5) mm wide, coriaceous-crustaceous. Seeds longitudinal, oblong to broadly elliptic, 4–5.5 mm long, dark brown, slightly reddish; areole open; aril orange.
Coastal and subcoastal environments, usually growing in more fertile soils, sometimes derived from basalt, often on the edges of littoral rainforest; at elevations up to 300 metres, occasionally to 900 metres.
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Grows usually in more fertile soils, sometimes derived from basalt, often on the edges of littoral rainforest.
Details of the utilisation of Acacia maidenii are given in J.W. Turnbull (ed.), Multipurpose Australian Trees and Shrubs 158–159 (1986) and 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 176–177 (1997).
Can be grown by seedlings. Seeds needs soaking.
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