Leionema dentatum, commonly known as toothed phebalium[2] is a species of large shrub or small tree that is endemic to New South Wales, Australia.

Leionema dentatum is a shrub or small tree to 6 m (20 ft) high with slender more or less needle-shaped stems.

The leaves are variable and may be narrowly oblong or elliptic, lance shaped or linear, 4–8 cm (1.6–3.1 in) long, 1–8 mm (0.039–0.315 in) wide, smooth, apex squared or blunt with two teeth, margins rolled under or upward more or less toothed, underside white with star shaped hairs and a raised midrib.

The fruit sit upright on the stem are about 3.5 mm (0.14 in) long and end in a small distinct point.

[5] This species grows mostly from Gibraltar Range National Park to the Illawarra region in southern New South Wales on sandstone in dry sclerophyll forests.