water fern

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water fern,

common name for various species of aquatic fernsfern,
any plant of the division Polypodiophyta. Fern species, numbering several thousand, are found throughout the world but are especially abundant in tropical rain forests. The ferns and their relatives (e.g.
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References in periodicals archive ?
Azolla is a free floating fresh water fern belonging to the family Azollaceae and order Pteridophyta.
Ecological responses and remediation ability of water fern (Azolla Japonica) to water pollution.
The Canal and River Trust, the charity that cares for the nation's historic waterways, has released the 2mm-long weed weevils into the Huddersfield Broad Canal near Colnebridge so they can eat the Water Fern (Azolla filliculoides).
Spermidine is a morphogenetic determinant for cell fate specification in the male gametophyte of the water fern Marsilea vestita.
Environment Minister Jane Davidson said: "Invasive aquatic plants such as floating pennywort, New Zealand pigmyweed, waterprimrose, parrot's feather and water fern can cause some severe environmental problems, with just one tiny piece of plant being able to establish a population that can choke an entire waterway.
A national campaign, Be Plant Wise, has been launched to advise gardeners preparing to dispose of pond water waste about the potential effects of plants such as floating pennywort, New Zealand pigmyweed, water-primrose, parrot's feather and water fern.
Also on the outlaw list are the innocent sounding Water Fern, Nuttal's Pondweed and even the delightfully sounding Parrot's Feather and Fringed Water Lily.
Water fern is a particularly rampant hitchhiker, spreading to neighbouring plants in shop displays.
Laboratory host range testing on the flea beetle, Pseudolampsis guttata (LeConte) (Coleoptera: Chrysomelidae), a potential natural enemy for red water fern, Azolla filiculoides Lamark (Pterophyta: Azollaceae) in South Africa.
Problem species include the South American water primrose, parrot's feather, New Zealand pygmy weed, floating pennywort and water fern.
Other water plants to avoid because of their invasive nature are floating pennywort, Hydrocotyle ranunculoides ; parrot's feather, Myriophyllum aquaticum ; and water fern, Azolla filiculoides .
In four papers published over the past 6 years, her team showed that the drug can severely stunt the growth of barley, corn, the water fern Azolla filiculoides, and the three common garden weeds redroot pigweed, broad-leafed plantain, and sheep sorrel.