Shrub or tree to 9 m high, resinous; trunk to 4.5 m high. Bark 'Minni Ritchi', red-brown. Branchlets angular to ±flattened near apices, very slender, dark red-brown; ridges light to dark red-brown, ± sericeous; interstices sericeous or ± glabrous, ± lenticellate. Phyllodes very narrowly elliptic to ± linear, flat, falcate, 6–14.5 cm long, 1.5–8 mm wide, thin; hairs weak, appressed on lamina or only on veins; margins and base (young phyllodes pale yellow-to white-sericeous), with conspicuous midvein and 1–3 semiprominent veins on each side; minor veins 3 or 4 per mm, occasionally anastomosing; gland 1, basal, to 1 mm above pulvinus. Spikes 1.5–3 cm long, delicate, pale yellow or cream-coloured. Flowers 5-merous; calyx 0.4–0.6 mm long, dissected for ⅓–⅔ of its length; upper calyx tube pubescent, with ciliolate margins; corolla c. 1–1.3 mm long, dissected for ½ of its length, papillose; ovary pubescent. Pods linear, submoniliform, often twisted, subtetragonous, 8–14 cm long, crustaceous, obscurely reticulate, ± glabrous; margins to 5.5 mm thick. Seeds longitudinal, rotund, 4–5 mm long, light brown to blackish; pleurogram with broad, yellowish halo; areole closed, round or elliptic, depressed, light brown to blackish.
Grows in stony soil over quartzite or sandstone, on plateaus, on the coast or along watercourses, in eucalypt woodland or in pure stands.
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