Tree to 20 m high, sometimes a shrub. Branchlets pendulous, slender, brittle. New shoots often tinged pink or purple-red. Stipules caducous, deltate, less than 0.5 mm long. Phyllodes very narrowly elliptic, commonly straight, 9–18 cm long (occasionally interspersed with a few c. 5 cm long), (4–) 5–10 (–12) mm wide, hooked, flexible, mostly glaucous, with several veins, one often prominent; anastomoses of smaller veins numerous; margins yellow; gland minute, 0–3 mm above pulvinus; pulvinus present. Inflorescences with peduncles 3–5 (–8) mm long and glabrous; receptacles glabrous; spikes paired or solitary, 3–6.5 cm long, pale yellow or cream-coloured; bracteoles stipitate, spathulate, concave, 0.7 mm long. Flowers loosely packed, 4-merous; sepals united. Pods linear, to 11 cm long, 3–5 mm wide, straight to slightly curved, raised over and shallowly constricted between seeds, coriaceous, ±glabrous, strongly longitudinally ridged when dry. Seeds oblong-elliptic, 5.5–7.8 mm long, shiny, brown; funicle filiform, folded 4–8 times; aril small, more or less oblique.
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