Sue Daly / Sea ivory lichen, (Ramalina siliquosa), Sark, British Channel Islands, April.
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Alex Hyde / Basalt covered in various coastal lichen species including Sea ivory (Ramalina siliquosa). Anglesey, Wales, UK. December.
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Chris Mattison / Sea ivory (Ramalina siliquosa) and Crustose lichen (Lecanora gangaleoides) on coastal rocks, Mull, Scotland, UK, June.
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Chris Mattison / Sea ivory (Ramalina siliquosa) and several other lichens, Grass Point, Mull, Scotland, June.
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Adrian Davies / Sea ivory lichen (Ramalina siliquosa) covering gravestone in coastal churchyard, Tintagel, Cornwall, UK. August.
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Adrian Davies / Thrift (Armeria maritima) in flower and Sea ivory lichen (Ramalina siliquosa) on a traditional Cornish herringbone pattern drystone wall, Bedruthan Steps, Cornwall, UK. May.
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Adrian Davies / Sea ivory lichen (Ramalina siliquosa) on gravestone in churchyard, Tintagel, Cornwall. June.
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Adrian Davies / Sea ivory lichen (Ramalina siliquosa) on gravestone in churchyard, Tintagel, Cornwall. June.
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Adrian Davies / Sea ivory lichen (Ramalina siliquosa) on gravestone in churchyard, Tintagel, Cornwall. June.
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Adrian Davies / Sea ivory lichen (Ramalina siliquosa) growing on traditional herringbone pattern Cornish stone wall, Bedruthan Steps, Cornwall, UK. May.
