Azolla sp

Family Azollaceae


Small free-floating aquatic fern, spreads by fragmentation.

Spores: 18 – 27 µm, though plants rarely fertile.

Gallery images: seedling, rootstock, resprout


  • Floating on still or slow moving water
  • Seasonal on lakes at the Australian Botanic Garden
  • Species of Azolla support the nitrogen fixing Cyanobacterium, Anabena azollae in the fronds of the plant

Ecology of Cumberland Plain Woodland

Azolla pinnata plants

Azolla pinnata plants