Calothamnus aridus

Calothamnus aridus grows to a height of about 2.5 metres (8 ft), has many stems and is highly branched. Its leaves are needle-like, mostly 7–10 millimetres (0.3–0.4 in) long, 0.6–1.2 millimetres (0.02–0.05 in) wide and have distinct oil glands. The flowers are arranged in clusters or loose spikes of up to 10 on the younger stems. The five petals are 3–5 millimetres (0.1–0.2 in) long, egg-shaped, dished, thin and covered with short hairs. The stamens are arranged in five claw-like bundles, each 1.0–1.5 millimetres (0.04–0.06 in) with 10 to 12 stamens per bundle. The stamens are a shade of orange to red in the lower part and pinkish red near the ends and tipped with yellow anthers. Flowering occurs between August and October and is followed by fruits which are woody capsules, 4–8 millimetres (0.16–0.31 in) long, 5–8 millimetres (0.2–0.3 in) in diameter and shaped like flattened spheres.