Shrub to 1 m tall, prostrate. Branchlets slightly angular, red-brown, resinous towards apices, squamulose. Phyllodes tetragonous-terete in section, 9–14 cm long, 0.8–1 mm wide, glabrous, squamulose, with 1 strong nerve at each angle and 1 or 2 less obvious median nerves on abaxial and adaxial faces, with 8 or 12 nerves in all; gland 1, basal, small. Spikes 1.2–2.2 cm long, golden. Flowers 5-merous, rarely 6-merous, widely spaced; calyx 0.6–0.9 mm long, dissected for ¼–⅓ of length, squamulose; corolla 1.7–2.5 mm long, dissected for ⅔–⅗ of length, glabrous; ovary glabrous. Pods linear, tapered at both ends, scarcely moniliform, flat (old valves tightly coiled), 6–10.5 cm long, c. 8 mm wide, subwoody, reticulate, glabrous; margins fawn, prominent. Seeds longitudinal, elliptic, 4.8–5.4 mm long, light brown; pleurogram thin, closed, with wide halo; areole paler brown.
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