bladder fern
n.
Any of various ferns of the widespread genus Cystopteris, having pinnately compound fronds and often growing in rocky areas.
[After its bladderlike indusium.]
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Any of various ferns of the widespread genus Cystopteris, having pinnately compound fronds and often growing in rocky areas.
[After its bladderlike indusium.]
The noun has one meaning:
Meaning #1:
any fern of the genus Cystopteris characterized by a hooded indusium or bladderlike membrane covering the sori
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![]() | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved. Read more | |
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