Persoonia linearis, commonly known as the narrow-leaved geebung, is a shrub native to New South Wales and Victoria in eastern Australia. It reaches , or occasionally , in height and has thick, dark grey papery bark. The leaves are, as the species name suggests, more or less linear in shape, and are up to long, and wide. The small yellow flowers appear in summer, autumn and early winter (December to July), followed by small green fleshy fruit known as drupes. Within the genus Persoonia, it is a member of the Lanceolata group of 58 closely related species. P. linearis interbreeds with several other species where they grow together. Found in dry sclerophyll forest on sandstone-based nutrient-deficient soils, P. linearis is adapted to a fire-prone environment; the plants resprout epicormic buds from beneath their thick bark after bushfires. The fruit are consumed by vertebrates such as kangaroo, possums and currawongs. As with other members of the genus, P. linearis is rare in cultivation as it is very hard to propagate by seed or by cuttings, but once propagated, it adapts readily, preferring acidic soils with good drainage and at least a partly sunny aspect. Taxonomy English botanist and artist Henry Cranke Andrews described Persoonia linearis in 1799, in the second volume of his Botanists Repository, Comprising Colour'd Engravings of New and Rare Plants. He had been given a plant in flower by J. Robertson of Stockwell, who had grown it from seed in 1794. The species name is the Latin linearis "linear", referring to the shape of the leaves. Meanwhile, German botanist Karl Friedrich von Gaertner had coined the name Pentadactylon angustifolium in 1807 from a specimen in the collection of Joseph Banks to describe what turned out to be the same species. The genus name derived from the Greek penta- "five" and dactyl "fingers", and refers to the five-lobed cotyledons. The horticulturist Joseph Knight described this species as the narrow-leaved persoonia (Persoonia angustifolia) in his controversial 1809 work On the cultivation of the plants belonging to the natural order of Proteeae, but the binomial name is illegitimate as it postdated Andrews' description and name. Carl Meissner described a population from the Tambo River in Victoria as a separate variety, Persoonia linearis var. latior in 1856, but no varieties or subspecies are recognised. German botanist Otto Kuntze proposed the binomial name Linkia linearis in 1891, from Cavanilles' original description of the