Acacia harpophylla F.Muell. ex Benth.

Tree to 25 m high, root-suckering. Bark hard, furrowed, almost black. Branchlets angular at extremities, appressed-puberulous or glabrous. Phyllodes falcate, 10–20 cm long and 7–20 mm wide, coriaceous, sericeous, with numerous closely parallel veins of which 3–7 are more prominent than the rest. Inflorescences condensed 2–8-headed racemes, often appearing as axillary clusters; raceme axes 2–10 mm long, appressed-puberulous; peduncles 10–20 (–30) mm long, appressed-puberulous; heads globular, 5–8 mm diam., 15–35-flowered, golden. Flowers 4-or sometimes 5-merous; sepals to ½-united. Pods subterete, slightly raised over and constricted between seeds, straight to slightly curved, to 20 cm long, 5–10 mm wide, crustaceous, longitudinally veined, glabrous. Seeds longitudinal, oblong or broadly elliptic, flat but thick, 10–18 mm long, soft, dull, brown; pleurogram not evident; funicle filiform, exarillate.

Forms extensive open-forest communities usually on fertile clay and loamy clay. It grows best on plains, only rarely being found on hills and ridges.

Details of ecology, utilisation, etc. of A. harpophylla are given in J.W. Turnbull (ed.), Multipurpose Australian Trees and Shrubs 140–143 (1986), 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 158–159 (1997), G. Lithgow,  60 Wattles of the Chinchilla and Murilla Shires 31 (1997) and D.J. Boland et al., Forest Trees of Australia 5th edn, 158–159 (2006). Because of its suckering habit Acacia harpophylla is generally considered an undesirable agricultural and rangeland species, especially as Brigalow lands are highly productive when cleared. The timber has been used for firewood and fence posts.

Can be grown by seedlings. Seeds needs soaking.