Azolla

Azolla is a small, taxonomically difficult genus from warm-temperate and subtropical zones. About seven species are usually recognised, including three New World species, but some are probably better lumped. Evrard & Van Hove (2004) recently merged Azolla caroliniana Willd. and A. filiculoides.


The exact origin of the Belgian populations remains uncertain. It was probably initially introduced as an ornamental.


Literature


Evrard C. & Van Hove C. (2004) Taxonomy of the American Azolla species (Azollaceae): a critical review. Syst. Geogr. Pl. 74: 301-318.


Lumpkin T.A. (1993) Azollaceae. In: Flora of North America Editorial Committee (eds.), Flora of North America, vol. 2. Oxford University Press, New York-Oxford: 338-342.


Sotiaux A. (1979) Contribution à une meilleure connaissance du genre Azolla dans le territoire de la Nouvelle Flore. Dumortiera 13: 1-5.


Zimmerman W.J., Lumpkin T.A. & Watanabe I. (1989) Classification of Azolla spp., section Azolla. Euphytica 43: 223-232.

Taxonomic name: 
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith