| Name | From | To | Age range |
|---|---|---|---|
| Azolla rossica | Toarcian | Aquitanian |
|
| Azolla roemoeensis | Toarcian | Zanclian |
|
| Azolla pyrenaica | Late Neogene | Pleistocene |
|
| Azolla pulchella | Miocene | Miocene |
|
| Azolla pseudopinnata | Chattian | Piacenzian |
|
| Azolla prisca | Bartonian | Early Chattian |
|
| Azolla primaeva | Maastrichtian | Messinian |
|
| Azolla pondicherriana | Late Albian | Late Albian |
|
| Azolla polyancyra | Late Cretaceous | Late Cretaceous |
|
| Azolla poltavica | Toarcian | Messinian |
|
| Azolla pinnata | Paleocene | Recent |
|
| Azolla pilata | Maastrichtian | Maastrichtian |
|
| Azolla parvula | Toarcian | Piacenzian |
|
| Azolla parapinnata | Tertiary | Messinian |
|
| Azolla nilotica | Paleocene | Paleocene |
|
| Azolla nikitinii | Tertiary | Early Piacenzian |
|
| Azolla nana | Rupelian | Messinian |
|