Acacia oligoneura F.Muell.

Shrub to 2 m high, many-stemmed, resinous. Branchlets angular, flattened towards apices, greenish yellow or yellow to pale brown, glabrous, often scurfy and with numerous to scattered reddish brown to clear granules. Phyllodes very narrowly oblanceolate (-elliptic), straight or slightly curved, (6–) 10–16 (–19) cm long, (7–) 8.5–16 (–20) mm wide, chartaceous to thinly coriaceous, light olive-green, glabrous, with yellowish nerves, with lower 2 of the 3 prominent longitudinal veins confluent near base; other main vein often confluent with upper margin; veins 2–4 (–5) per mm, moderately to strongly anastomosing; gland basal, 0–4 mm above pulvinus. Peduncles 2.5–8 mm long. Spikes 1–3 in axils, 1–4.2 cm long, light golden or bright yellow. Flowers 5-merous; calyx cupular, membranous, 0.5–0.7 mm long, dissected to ⅕–½, glabrous or with reddish brown glandular hairs (granules) towards sepal apices; corolla 1–1.5 mm long, dissected to ½ or more. Pods narrowly oblanceolate-linear, basally narrowed, flat, 5–8.5 cm long, 4–7.5 mm wide, woody, prominently obliquely to longitudinally nerved, glabrous, opening elastically from hooked apex. Seeds oblique, ±elliptic or oblong, 4.7–5.5 mm long, mid-brown; funicle-aril narrowly conical.

It grows in brown gravelly loam on the side of a laterite breakaway in Eucalyptus low woodland.