Inaki Relanzon / Eagle fern (Pteridium aquilinum) frond unfurling, Montseny Natural Park, a UNESCO National Park and Biosphere Reserve, Barcelona, Catalonia, Spain, June 2016.
Sandra Bartocha / Scots pine (Pinus sylvestris) tree trunks with Eagle fern (Pteridium aquilinum) in fog. Godendorf, Germany
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Alan Williams / Bracken (Pteridium aquilinum) on Heather (Calluna vulgaris) moorland on Esclusham Mountain near Wrexham, North Wales, UK, August.
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Ernie Janes / Bracken (Pteridium aquilinum) growing frond unfurling against white background, Norfolk, England, UK, May.
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Alex Hyde / Bracken (Pteridium aquilinum), heather and tannin-stained brook, Stainery Clough, Peak District National Park, Derbyshire, UK. August 2015.
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Michael Hutchinson / European adder (Vipera berus) melanistic in dry bracken, Gloucestershire, UK, March.
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Michael Hutchinson / European adder (Vipera berus) coiled up in dry bracken, Gloucestershire, UK, March.
Robert Thompson / Barred hook-tip moth (Watsonalla cultraria) camouflaged on fern in autumn, Ballykinler Dunes, County Down, Northern Ireland, UK, September
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Peter Cairns / RF- Bracken (Pteridium aquilinum) leaf frond close-up. Strathspey, Scotland, UK. (This image may be licensed either as rights managed or royalty free.)