brittle fern

Noun
  1. Delicate fern widely distributed in North America and European having thin pinnatifid fronds with brittle stems (synset 113216901)
    is a type of: bladder fern - any fern of the genus Cystopteris characterized by a hooded indusium or bladderlike membrane covering the sori
    same as: brittle bladder fern, cystopteris fragilis, fragile fern

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