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bladder fern

noun
1.
any of several ferns of the genus Cystopteris, having pinnate leaves and growing in rocky areas.
Origin
1820-1830
1820-30; so called from the bladderlike indusium
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for bladder fern
  • Limestone outcrops near the top of the slope harbor populations of smooth cliff brake, bulblet bladder fern, and slender lip fern.
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
C19: named from the bladder-shaped indusium
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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