Rigid shrubs. Leaves opposite, petiolate or sessile, often caducous; stipules fused at base and opposite pairs united into a short collar; simple axillary spines often present. Flowers bisexual, solitary or clustered in axils of leaves of short axillary shoots; sepals (4–)5, falling before fruit ripens; petals 5, hooded, or sometimes absent; disc prominent, largely covering the ovary summit; ovary inferior, carpels 3, style entire or slightly branched. Fruit a capsule (in Australia) or a drupe, splitting into 3 medially dehiscent segments; seeds not arillate.
10 species, from southern South America, New Zealand (1 species) and south-eastern Australia (2 species).