floating fern Meaning, Definition & Usage
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noun pantropical aquatic fern
Ceratopteris thalictroides.
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noun aquatic fern of tropical America often used in aquariums
Ceratopteris pteridioides; water sprite.
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noun small free-floating aquatic fern from the eastern United States to tropical America; naturalized in western and southern Europe
Carolina pond fern; Azolla caroliniana; mosquito fern.
