Created 4-Jan-16
Modified 5-Jan-16
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Azolla pinnata

Ferny Azolla

New Zealand Status: Introduced
Conservation Status: Naturalised

Azolla pinnata is a floating aquatic fern that's found on the surface of small, still ponds or backwaters without wave action, at low to middle altitudes. It becomes especially abundant in water with high nutrient levels, such as ponds in cattle paddocks and farm ponds, where it can completely cover the water surface. It has the ability to survive on moist soil in and around rivers, ditches and ponds which may allow the plant to survive low water levels and periods of drought.

In New Zealand A. pinnata is classified as an invasive species.
Azolla pinnata, Ferny Azolla