Genera : 8

Species: 100



To Genus Directories:




Distribution: Cosmopolitan, but mainly in Australia and the Southern Hemisphere.

Economic Uses: Cultivated as an aquarium plant.

Defining Features of Interest: The family is an aquatic species and shows a dimorphism is the leaves between submerged and emergent forms.

Fossil Evidence:Fossil pollen from the Paleocene ans some questionable pollen from the Upper Cretaceous.