Azolla sp

Family Azollaceae

Azolla

Small free-floating aquatic fern, spreads by fragmentation.

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

Gallery images: seedling, rootstock, resprout

Ecology

• 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