bladder fern

Origin of bladder fern

First recorded in 1820–30; so called from the bladderlike indusium
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British Dictionary definitions for bladder fern

bladder fern

noun
  1. a small fern, Cystoperis fragilis, with graceful lanceolate leaves, typically growing on limestone rocks and walls

Word Origin for bladder fern

C19: named from the bladder-shaped indusium
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