| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Adiantum raddianum C. Presl | 0 | 0 | 1 |
| Aegialitis | 1 | 0 | 0 |
| Aegialitis annulata R. Br. | 0 | 0 | 1 |
| Aegiceras | 1 | 0 | 0 |
| Aegiceras corniculatum (L.) Blanco | 0 | 0 | 1 |
| Aeginidae Gegenbaur 1857 | 1 | 0 | 0 |
| Aequorea Péron & Lesueur 1810 | 1 | 0 | 0 |
| Aequorea macrodactyla (Brandt 1835) | 0 | 0 | 1 |
| Aequoreidae Eschscholtz 1829 | 1 | 0 | 0 |
| Aetea Lamouroux 1812 | 1 | 0 | 0 |
| Aetea truncata (Landsborough 1852) | 0 | 0 | 1 |
| Aeteidae Smitt 1868 | 1 | 0 | 0 |
| Aeverrillia | 1 | 0 | 0 |
| Aeverrillia setigera | 0 | 0 | 1 |
| Aeverrilliidae | 1 | 0 | 0 |
