| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Aglaothamnion gallicum | 0 | 0 | 1 |
| Aglaothamnion hookeri | 0 | 0 | 1 |
| Aglaothamnion scopulorum | 0 | 0 | 1 |
| Aglaothamnion sepositum | 0 | 0 | 1 |
| Agonimia | 1 | 0 | 0 |
| Agonimia tristicula (Nyl.) Zahlbr. | 0 | 0 | 1 |
| Agromyzidae | 2 | 0 | 0 |
| Ahnfeltia Fries 1836 | 1 | 0 | 0 |
| Ahnfeltia plicata | 0 | 0 | 1 |
| Ahnfeltiaceae | 1 | 0 | 0 |
| Ahnfeltiales | 1 | 0 | 0 |
| Aira | 1 | 0 | 0 |
| Aira praecox L. (Canche précoce) | 0 | 0 | 0 |
| Alaria Greville 1830 | 2 | 0 | 0 |
| Alaria esculenta | 0 | 0 | 1 |
