Shrub to 3 m high, multistemmed. Bark 'Minni Ritchi', maroon or grey. Branchlets angular towards apices, maroon-grey, ±silky-pubescent or subglabrous. Young shoots with appressed, yellow hairs. Phyllodes erect, linear, subterete or flattened, (5–) 8.5–18 cm long, usually 0.5–1.5 mm wide, thick, longitudinally striate with c. 25 closely parallel nerves, usually ±shallowly grooved along midline between several raised veins, silky (especially in groove and between veins) to subglabrous; gland 1, basal, to 2.3 mm above pulvinus. Spikes obloid, 0.4–1.2 cm long, golden. Flowers 5-merous; calyx 0.9–1.3 mm long, dissected for 3/10–⅝ of length, densely pubescent on lobes; corolla 1.3–1.8 mm long, dissected for ⅓–½ of length, with lobes pubescent and margins papillose; ovary densely pubescent. Pods linear, flat, ±straight-sided to slightly constricted between seeds, 4–7 cm long, 2–3.5 mm wide, firmly chartaceous, with loosely matted hairs. Seeds longitudinal, ±narrow oblong-elliptic, 3–3.3 mm long, dark brown; pleurogram U-shaped, with yellowish halo; areole depressed, greyish brown.