DistributionA genus of over 100 species, most of which are native to Australia.

Habit

Perennial herbs, shrubs, or small trees.

Leaves

Leaves simple, alternate, margins entire or toothed.

Flowers

Flowers perfect, strongly irregular, axillary, solitary or in cymes, bracteolate; calyx 5 parted; corolla funnelform unilabiate, 5 parted, the tube split adaxially, the lobes spreading, often winged; stamens 5, distinct; ovary inferior, ovoid, 2 celled, placentation axile; style exserted and protruding through the adaxially split tube, curved abruptly downward near stigma.

Fruit

Fruit a blue-black or white 1- or 2-seeded drupe, the exocarp often succulent, the endocarp woody or bony, sometimes surrounded by softer, corky tissue. 

Seeds

Seeds obovate, plano-convex.