Salviniaceae (weeds) - (floating ferns)
The family of Salviniaceae contains around 10 species of floating ferns. The plants are small and the leaves grow to a size of up to 2 cm. Several species, especially Salvinia molesta, have been introduced outside their native range and have become important aquatic weeds in tropical and subtropical lakes, disrupting the ecology of native plants and animals. The genus Azolla has been previously assigned to a separate family, the Azollaceae.
The following genera and individual species are currently entered under this family: