| Genus | # of species |
|---|---|
| Acacia | 1 |
| Acalypha | 2 |
| Acanthophoenix | 2 |
| Actinokentia | 1 |
| Actinorhytis | 1 |
| Adansonia | 1 |
| Adonida | 1 |
| Adonidia | 2 |
| Aechmea | 1 |
| Agave | 9 |
| Aiphanes | 3 |
| Albuca | 1 |
| Alcantarea | 1 |
| Allagoptera | 1 |
| Alocasia | 7 |
| Alpinia | 3 |
| Alternanthera | 1 |
| Amherstia | 1 |
| Angiopteris | 1 |
| Annona | 2 |