Azolla caroliniana

Azolla caroliniana Willdenow is a synonym (Evrard & Van Hove, 2004) of:

Azolla filiculoides Lamarck, an accepted species name sensu FNA Ed. Comm., 1993.

Azolla caroliniana auct. non Willdenow is a synonym (Evrard & Van Hove, 2004) of:

Azolla cristata Kaulfuss, an accepted species name sensu Evrard & Van Hove, 2004.