- Leaves simple, opposite, entire.
- Translucent dots containing aromatic oils.
- Flowers with 4-5 free petals and many stamens.
- Fruits fleshy with one or a few seeds (more in Psidium).
Diagnosis: Trees, aromatic odor of essential oils, without stipules, leaves simple, opposite, entire, with translucent yellow dots.
Diversity: Total: 8 genera, 31 species. Trees: 8 genera, 29 species.