Robert Thompson / Lichen (Ochrolechia parella) Ballywhoriskey Point, County Donegal, Northern Ireland. October.
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Guy Edwardes / Crawfish lichen (Ochrolechia parella) on a gravestone, Unst, Shetland Islands, Scotland, August.
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Chris Mattison / Crawfish lichen (Ochrolechia parella) growing on a headstone. Gower, South Wales, UK.
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Chris Mattison / Crab eye lichen (Ochrolechia parella) on headstone, Gower, South Wales, UK, June.
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Chris Mattison / Two lichens on a headstone, Grab eye lichens (Ocrolechia parella) - pale grey, and Rusty shielded lichen (Caloplaca crenularia) Gower, South Wales, UK, June.
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Adrian Davies / Lichens including Xanthoria parietina and Ochrolechia parella on tombstones in village churchyard. Slapton, Devon, England, UK, July 2013.
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Adrian Davies / Lichen (Ochrolecia parella) on wall of church, Devon, UK, August
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Adrian Davies / Orange coloured Seashore Lichens (Xanthoria parietina) and Ochrolechia parella. UK, August
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Adrian Davies / Crawfish Lichen (Ochrolechia parrella) Devon, England
Adrian Davies / Seashore lichens Xanthoria parietina (orange) and Ochrolechia parella (grey), UK
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Will Watson / Crustose lichens on Silurian limestone stone wall with Black apothecia (Tephromela atra), Lecanora rupicola and Ochrolechia parella, Bradnor Hill, Herefordshire, England, November, focus stacked.
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Guy Edwardes / Parelle (Ochrolechia parella) lichen on gravestone. Unst, Shetland Islands, Scotland, UK. August.