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Circinnate Vernation in a Fiddlehead Fern | by Plant Design Online
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Circinnate Vernation in a Fiddlehead Fern

Ferns have a characteristic fiddlehead shape when they are young. This is called circinnate vernation, meaning that the leaf unfurls in a spiral pattern. Just about all ferns share this pattern, which is hereditary, but it can be seen in many other plant forms as well.

  

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Taken on May 4, 2003