genus Cystopteris


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Noun1.genus Cystopteris - chiefly small perennial rock ferns: bladder fernsgenus Cystopteris - chiefly small perennial rock ferns: bladder ferns; in some classifications placed in Polypodiaceae
fern genus - genera of ferns and fern allies
Athyriaceae, Dryopteridaceae, family Athyriaceae, family Dryopteridaceae - alternative names for one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems
bladder fern - any fern of the genus Cystopteris characterized by a hooded indusium or bladderlike membrane covering the sori
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