Duncan Mcewan / Common polypody fern (Polypodium vulgare) Sori on underside of frond, Scotland
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Duncan Mcewan / Common polypody fern (Polypodium vulgare) sori on underside of frond, Scotland
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Piotr Naskrecki / Rock Polypody (Polypodium virginianum) leaf, Massachusetts
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Alan Watson / Unfurling frond of Common Polypody fern (Polypodium vulgare) on an Oak tree (Quercus petraea) in temperate forest, Killarney National Park, County Kerry, Republic of Ireland, Europe
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Alan Watson / Polypody ferns (Polypodium vulgare) and Moss on the trunk of Oak tree (Quercus petraea) Tomies Wood, Killarney National Park, County Kerry, Republic of Ireland, Europe
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Jerry Monkman / Common polypody fern / fiddlehead {Polypodium vulgare} frond unfurling, Boxford, Massachusetts, USA
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Jerry Monkman / Common polypody fern / fiddlehead {Polypodium vulgare} frond unfurling, Boxford, Massachusetts, USA
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Duncan Mcewan / Polypody fern on fallen tree {Polypodium vulgare}, Oakwood, Inverness-shire, Scotland
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Philippe Clement / Frond of Common polypody fern {Polypodium vulgare} showing spores on underside, Belgium
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Philippe Clement / Common polypody fern {Polypodium vulgare} in woodland, Belgium
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Philippe Clement / Frond of Common polypody fern {Polypodium vulgare} showing spores on underside, Belgium
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Philippe Clement / Common polypody {Polypodium vulgare}close-up of frond, La Brenne, France.