The flattened lichen hugging the tree twigs are a 'Foliose' tree lichen. Perhaps Parmotrema perlatum syn. Parmotrema chinense, or Parmelia perlata

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Size: 3712px × 5568px
Location: cornwall, uk
Photo credit: © Marcus Harrison - plants / Alamy / Afripics
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Keywords: branch, covered, foliose, green, grey-green, lichen, pale, thallus, thick, tree, twig, twigs