Landoltia
1 species native Aust.; Qld, NSW, Vic., S.A., WA
Landoltia punctata
Small, floating, aquatic herbs frequently forming a green carpet on the surface of still waters. Cladodes ± round or broad-ovate. Roots 2–11 (occasionally 1) per cladode. Inflorescence minute, in a pocket on the margin of the cladode, with 1 female flower and 2 males enclosed in a sheath. Widespread in still water, ditches, ponds and creeks