Common Name - Brigalow
Acacia harpophylla, commonly known as the Brigalow, Brigalow Spearwood or Orkor is an endemic tree of Australia. It is found in central and coastal Queensland to northern New South Wales. It can reach up to 25 metres tall and forms extensive open-forest communities on clay soils.
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 nerves 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 half-united. Pods subterete, slightly raised over and constricted between seeds, straight to slightly curved, to 20 cm long, 5–10 mm wide, crustaceous, longitudinally nerved, glabrous. Seeds longitudinal, oblong or broadly elliptic, flat but thick, 10–18 mm long, soft, dull, brown; pleurogram not evident; funicle filiform, exarillate.
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