plume smokebush

Conospermum incurvum is a prostrate or erect, spindly shrub that typically grows to a height of 0.4–1 m (1 ft 4 in – 3 ft 3 in), its stems densely covered in cylindrical leaves, 7–30 mm (0.28–1.18 in) long and 0.5–0.8 mm (0.020–0.031 in) wide. The leaves are s-shaped and the edges are curved upwards. The flowers are arranged in woolly panicles 50–400 mm (2.0–15.7 in) long on the ends of branches. The flowers have many bracts and dark blue, d-shaped bracteoles 2.2–3.5 mm (0.087–0.138 in) long and 2–3 mm (0.079–0.118 in) wide. The perianth is tube-shaped, 4–7 mm (0.16–0.28 in) long, woolly and white.

Plume smokebush occurs in undulating sandplains of white, grey or yellow/brown sand over laterite, ranging from Eneabba south to Perth. Thus it primarily occurs in the Swan Coastal Plain and Geraldton Sandplains biogeographic regions. There are also some outlying populations in the Avon Wheatbelt and Jarrah Forest regions, and a single population in the Esperance Plains region north of Albany.