A small aquatic fern that floats on water and forms a symbiotic relationship with nitrogen-fixing bacteria, used as a biofertilizer and animal feed in agriculture.
From 'azo-' (nitrogen) + Greek 'ollē' or possibly from the genus name Azolla created by Jean Baptiste Payer in 1837. Named for its association with nitrogen fixation.
Azolla is nature's fertilizer factory—this tiny fern harbors bacteria in special pockets that literally pull nitrogen from the air and convert it into plant food, making it precious for sustainable farming in Asia and Africa.
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