Prostrate shrubs to small trees. Leaves simple, usually alternate, entire, shortly petiolate. Inflorescence of head-like clusters, axillary or apparently terminal. Flowers usually sessile or subsessile, sometimes pedicellate; bracts imbricate, sometimes forming an involucre; hypanthium bell-shaped, enclosing ovary; sepals 5, persistent in fruit; petals 5, free, broadly obovate to orbicular, shortly clawed; stamens numerous in 1 or more distinct rows, much longer than petals; anthers attached by the middle, opening by longitudinal slits; ovary half-inferior, 2–5-celled. Fruit a capsule, dry and opening at the top loculicidally in most species, fleshy and indehiscent in some species; seeds 1 or 2 per cell and reniform, or several and angular.
About 43 species currently recognized, in temperate Australia and New Zealand, but genus in need of revision.