genus Azolla

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Noun1.genus Azolla - a genus of fern sometimes placed in its own family Azollaceae
Azolla caroliniana, Carolina pond fern, mosquito fern, floating fern - small free-floating aquatic fern from the eastern United States to tropical America; naturalized in western and southern Europe
fern genus - genera of ferns and fern allies
References in periodicals archive ?
Phylogeny and divergence time estimates from the fern genus Azolla (Salviniaceae).
The supraspecific taxonomy and evolution of the fern genus Azolla (Azollaceae).