Needle Geebung

Persoonia acerosa is an erect to spreading shrub that typically grows to a height of 0.5–2 m (1 ft 8 in – 6 ft 7 in) and has smooth bark. The leaves are linear, 10–23 mm (0.39–0.91 in) long and 0.5 mm (0.020 in) wide and channelled on the upper surface. The flowers are arranged between the leaves on a branchlet that continues to grow after flowering, each flower on a pedicel 1–2 mm (0.039–0.079 in) long. The flowers are tube-shaped, 8–10 mm (0.31–0.39 in) long, glabrous, and mostly appear in summer. The fruit is a pear-shaped, yellowish-green drupe up to 14 mm (0.55 in) long.

Needle geebung grows in heath, scrubby woodland and forest on sandstone on the Central Coast and from the central Blue Mountains to the Hill Top district in New South Wales at altitudes of 550–1,000 m (1,800–3,280 ft). It is mainly found in the upper Blue Mountains and is believed to be extinct at Hill Top.