Conospermum acerosum

Conospermum acerosum is a spindly shrub, either erect or sprawling, that typically grows to 0.3–1.7 m (1 ft 0 in – 5 ft 7 in) high, usually with several unbranched stems growing from the base of the plant. It has sharply pointed, needle-shaped or thread-like leaves up to 100 mm (3.9 in) long and 0.5–1 mm (0.020–0.039 in) wide. The flowers are arranged in panicles of white, red or pink flowers, the flowers forming a tube 3.5–5 mm (0.14–0.20 in) long. The upper lip is 4.5–5.5 mm (0.18–0.22 in) long and the lower lip 1.0–1.5 mm (0.039–0.059 in) long with lobes 3.0–3.5 mm (0.12–0.14 in) long. Flowering occurs from July to November and the fruit is a reddish-brown nut 2.5–3.5 mm (0.098–0.138 in) long and about 2.8 mm (0.11 in) wide.

Needle-leaved smokebush grows in sandy soil, often over laterite, from the Kalbarri National Park south to Augusta and inland as far as Coorow, in the Avon Wheatbelt, Geraldton Sandplains, Jarrah Forest and Swan Coastal Plain bioregions. Subspecies hirsutum occurs in the northern part of the distribution, from Kalbarri to Northampton, and subsp. acerosum from south of Northampton to near Perth, with isolated populations near Busselton and Nannup.