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bladder fern is a noun meaning "any fern of the genus Cystopteris characterized by a hooded indusium or bladderlike membrane covering the sori". It carries one recorded sense.
any fern of the genus Cystopteris characterized by a hooded indusium or bladderlike membrane covering the sori
Definitions, synonyms and semantic relations for bladder fern come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.