Alex Hyde / Common Orange Lichen (Xanthoria parietina) growing on a road sign. This species is very resitant to air pollution.Peak District National Park, Derbshire, UK. April.
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Nick Upton / Circular patch of Common orange lichen (Xanthoria parietina) growing on rocks just above the high tide line, Severn Beach, Somerset, UK, April.
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Chris Mattison / Common orange lichen (Xanthoria parietina) on Hawthorn twig (Crataegus monogyna) together with a Shield lichen (Parmelia sulcata) England, UK. April.
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Nick Upton / Common orange lichen (Xanthoria parietina) with many cup-shaped apothecia fruiting bodies, growing on Hawthorn branch (Crataegus monogyna) in early spring, Wiltshire, UK, March.
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Nick Upton / Limestone rocks high just above the high tide line with patches of Common orange lichen (Xanthoria parietina) and Black Tar lichen (Hydropunctaria maura / Verrucaria maura). Rhossili, The Gower Penins...
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Nick Upton / Limestone rocks high just above the high tide line with two Small periwinkles (Melarhaphe neritoides = Littorina neritoides) among patches of Common orange lichen (Xanthoria parietina) and Black Tar l...
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Nick Upton / Limestone rocks high just above the high tide line with two Small periwinkles (Melarhaphe neritoides = Littorina neritoides) among patches of Common orange lichen (Xanthoria parietina) and Black Tar l...
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Will Watson / Jelly ear fungus (Auricularia auricula judae) growing on Elder (Sambucus nigra) tree branch with Maritime sunburst lichen (Xanthoria parietina), Stocking Meadow Nature Reserve, Herefordshire, England,...
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Robert Thompson / Lichens (Parmelia sulcata) and (Xanthoria parietina) growing on apple twigs, Peatlands and Annagarriff wood National Nature Reserve, Portadown, County Armagh, Northern Ireland, UK. September.
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Nick Upton / Sunburst lichen (Xanthoria parietina) growing on limestone cliff tops at Stackpole Head, Pembrokeshire, Wales, UK, August.
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Adrian Davies / Lichen (Xanthoria parietina) growing on gravestone in churchyard, Tintagel, Cornwall. May.
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Orsolya Haarberg / Old-growth Common beech (Fagus sylvatica) forest. Tree trunk covered with lichen. Abruzzo, Lazio and Molise National Park, Italy. November. non-ex.
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Adrian Davies / Lichen (Xanthoria parietina) growing on brick wall, does not grow on mortar, Romney Marsh, Kent, UK. June.
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Robert Thompson / Branch covered with different lichens including Xanthoria parietina, Lecanora chlarotera with a lichenicolous fungus, Evernia prunastri and Physcia sp, Banbridge, County Down, Northern Ireland.
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Robert Thompson / Branch covered with different lichens Xanthoria parietina, Physcia tenella, Physcia adscendens, Peatlands & Annagarriff Wood NNR, County Armagh, Northern Ireland.
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Adrian Davies / Seashore lichen (Xanthoria parietina) on rock. Cornwall, England, UK. July.
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Nick Upton / Rock samphire / Sea Fennel (Crithmum maritimum) clumps flowering among coastal rocks encrusted with Common orange lichen (Xanthoria parietina), Rhossili, The Gower, Wales, UK, August.