Common rock polypody fern (Polypodium virginianum) growing on rocky outcrop along the Rivana River in Charlottesville, Virginia.

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Photo credit: © Gerry Bishop / Alamy / Afripics
License: Royalty Free
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Keywords: -flowering, adaptation, cap, common, fern, fronds, habitat, lichens, plant, polypodium, polypody, rock, rocks, rocky, survival, virginianum)