| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Abrothallus parmeliarum (Sommerf.) Nyl. 1869 | 0 | 0 | 1 |
| Abutilon | 1 | 0 | 0 |
| Abutilon theophrasti Medik. (abutilon) | 0 | 0 | 1 |
| Acalles | 1 | 0 | 0 |
| Acalles echinatus Schoenherr 1844 | 0 | 0 | 1 |
| Acallocrates | 1 | 0 | 0 |
| Acallocrates denticollis Hustache 1931 | 0 | 0 | 1 |
| Acanthaceae | 1 | 0 | 0 |
| Acanthamunnopsis Schultz 1978 | 1 | 0 | 0 |
| Acanthamunnopsis longicornis (Hansen 1895) | 0 | 0 | 1 |
| Acanthinula H. Beck 1847 | 1 | 0 | 0 |
| Acanthinula aculeata (O. F. Müller 1774) | 0 | 0 | 1 |
| Acanthocardia Gray 1851 | 4 | 0 | 0 |
| Acanthocardia deshayesii (Payraudeau 1826) | 0 | 0 | 1 |
| Acanthocardia echinata (Linnaeus 1758) (Acanthocardia echinata) | 0 | 0 | 1 |
