Links to genera Ferns and Horsetails (Monilophytes) Clubmosses and Quillworts (Lycophytes)
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| Gymnocarpium dryopteris • Oak Fern
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| Gymnocarpium dryopteris (L.) Newman; Thelypteris dryopteris (L.) Slosson; Oak Fern; Woodland Oak Fern
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| Frond. Scotland (Cairngorms), early August |
 | Frond. Scotland (Cairngorms), early July |
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| Frond. Cumbria, late July |
 | Frond. Yorkshire, late July |
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| Immature frond. Cumbria, late July |
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Young fronds unfurling. Cumbria, June |
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| Young fronds unfurling. Cumbria, June |
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Cumbria, late July |
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| Yorkshire, late July |
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Cumbria, late July |
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| Scotland (Cairngorms), early August |
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