| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Abrothallus | 0 | 2 | 0 |
| Abrothrix Waterhouse 1837 | 0 | 2 | 0 |
| Abrus (abrus) | 0 | 2 | 0 |
| Abrus precatorius L. (rosarypea) | 0 | 2 | 0 |
| Absconditella (absconditella lichen) | 0 | 2 | 0 |
| Absolmsia | 0 | 2 | 0 |
| Abstoma | 0 | 2 | 0 |
| Abstoma purpureum (Lloyd) G. Cunn. 1926 | 0 | 2 | 0 |
| Abudefduf (Sergeant Fish) | 0 | 2 | 0 |
| Abudefduf saxatilis (Linnaeus 1758) (Damsel Fish) | 0 | 2 | 0 |
| Aburistinae | 0 | 2 | 0 |
| Abuta | 0 | 2 | 0 |
| Abutilon (Indian mallow) | 0 | 2 | 0 |
| Abutilon × hybridum | 0 | 2 | 0 |
| Abutilon fruticosum Guill. & Perr. (Texas Indian mallow) | 0 | 2 | 0 |
