SafePlants

Feathered Mosquitofern (Azolla pinnata)

Azolla pinnata, commonly known as feathered mosquitofern or water velvet, is a small aquatic fern with intriguing characteristics and a significant ecological role.

Considerations for Pets

• This plant is aquatic and typically found in water features, which might pose a drowning risk for small pets if they fall in.

Taxonomy and Nomenclature

• Scientific Name: Azolla pinnata R. Br.
• Common Names: Feathered mosquitofern, water velvet, mosquito fern, ferny azolla.
• Family: Azollaceae
• Taxonomic Rank: Filicopsida: Hydropteridales: Azollaceae
• Synonyms: The text indicates that feathered mosquitofern and water velvet are synonyms for Azolla pinnata.

Distribution and Habitat

• Azolla pinnata is native to much of Africa and Asia, including Australia, India, and the Philippines.
• It is an aquatic plant, typically found floating on the surface of water in canals, open-water habitats, and along the edges of dams.
• Not found in the Western US.

Ecological Role

• Azolla pinnata is considered an invasive plant in some regions, including South Florida.
• It can establish in canals and open-water habitats.

Morphological Characteristics

• It is a small fern with a triangular frond, which may appear Christmas tree-shaped.
• The frond measures up to 1 inch (2.5 cm) in length.
• It floats on the water surface.
• The leaves can be green or turn red.
• Classified as a forb/herb (a non-woody plant that is not a grass).

Interactions with Other Organisms

• The text suggests that plant fragments can be spread by clinging to the feet or feathers of birds.

Further Information

• USDA PLANTS Database (Symbol: AZPI)
• Invasive Plant Atlas
• Idaho State Department of Agriculture
• Discover Life
• Bugwood.org (David Nicholls)
• The Aquarium Wiki