Fern sporangia, Dryopteris sp. Macro view of the fern underside.

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Photo credit: © Scenics & Science / Alamy / Afripics
License: Licensed
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Keywords: called, complex, dryopteris, fern, ferns, leaves, macro, male, megaphylls, mitosis, produce, sori, sp., sporangia, sporangium, spores, underside., view, wood