water fern

Also found in: Dictionary, Thesaurus, Wikipedia.

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.
..... Click the link for more information.
References in periodicals archive ?
They breed quickly so collectively they can eat their way through a very large mass of the water fern in just a few weeks.
Environment Minister parrot's feather project officer Nicola Parrot's feather is now adapting to the UK winters by becoming more frost resistant and water fern can colonise areas of freshwater.
In an upcoming issue of Water Research, Migliore's team reports that water ferns sop up even more of the drug--up to 1,000 ppm in their tissues.
Spatial and temporal regulation of nucleating sites for arrays of cortical microtubules in root tip cells of the water fern Azolla pinnata.
The floating water fern or fairy fern (Azolla filliculoides) is an attractive aquatic plant with delicate fern-like foliage that originates in the Americas.
Although individual water fern plants are only around 10mm long, they are voracious growers and can multiply rapidly, covering the surface of a waterway with thick mats in a matter of weeks.
Problem plants include Australian swamp stonecrop (crassula helmsii), water fern (azolla filiculoides), floating pennywort (hydroctyle ranunculoides), parrot's feather (myriophyllum aquaticum), curly waterweed (lagarosiphon major) and water primrose (ludwigia grandiflora).
Now conservationists are begging gardeners on the island to join the fight against the relentless march of the tiny water fern.
Be careful not to buy any non-native invasive aquatic species such as New Zealand Pigmy Weed, Floating Pennywort, Water Fern and Creeping Water Primrose.
Such is the threat posed by the tiny water fern that the Countryside Council for Wales is warning that if immediate action is not taken then the weed may overwhelm some of the nationally important wildlife found on Anglesey.
Floating pennywort, New Zealand pigmyweed, water-primrose, parrot's feather and water fern - all of which can be found in garden ponds - are some of those posing significant problems in the wild.
Other animal marauders include Chinese mitten crabs and zebra mussels, Plants include Japanese knotweed, Himalayan balsam, Australian swamp stonecrop, water fern, giant hogweed and floating pennywort.