| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Alcidae (auks) | 6 | 2 | 0 |
| Alectoria | 1 | 0 | 0 |
| Alectoria ochroleuca (Hoffm.) A. Massal. (witch's hair lichen) | 0 | 2 | 0 |
| Alethinophidia | 3 | 0 | 0 |
| Alismatales | 1 | 0 | 0 |
| Alismatidae | 2 | 0 | 0 |
| Alle Link 1806 | 1 | 0 | 0 |
| Alle alle (Linnaeus 1758) (Little Auk) | 0 | 1 | 0 |
| Alliaceae | 0 | 2 | 0 |
| Allieae | 1 | 0 | 0 |
| Allioideae | 1 | 0 | 0 |
| Allium (Onions) | 86 | 1 | 0 |
| Allium proliferum (Moench) Schrad. ex Willd. (garden onion) | 0 | 2 | 0 |
| Allium aaseae Ownbey (South Idaho onion) | 0 | 2 | 0 |
| Allium abbasii R. M. Fritsch | 0 | 2 | 0 |
