water clover

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Related to water clover: Marsilea

water clover,

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 ?
Some have roots submerged in soil, such as water lilies (Nymphaea) and water clover (Marsilea mutica).