Calycopeplus marginatus Benth.

Shrub or subshrub to 4 m high. Bark smooth. Stems 2-angular and flattened in one plane. Stipules linear-lanceolate, 0.4–1 mm long. Leaves linear-lanceolate, 0.4–1 mm long, 0.1–0.2 mm wide, eglandular. Involucres short-campanulate, 1.2–1.5 mm long, 2.2–3 mm diam.; lobes obovate to ovate, 1.5–2.2 mm long, 1.5–2.4 mm wide, entire, longer than glands; glands ellipsoid to triangular, 0.3–0.4 mm long, 0.4–0.5 mm wide, obscured behind lobes and inserted on involucre at base below lobe insertion. Male flowers in clusters of 4–12; anthers 0.3–0.5 mm long, 0.4–0.5 mm wide. Fruit ± globose, 4–5 mm long, 4.5–5 mm diam. Seeds oblong, c. 3 mm long and 2.5 mm wide.

Grows in white sand or red loam, often near watercourses.