Diploicia canescens is a common crustose lichen found on both calcareous and siliceous substrates. It's on every continent except Antarctica.

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Keywords: anglesey, antarctica, bark, calcareous, caliciaceae, canescens, continent, crustose, diploicia, enriched, lichen, north, nutrient, placodioid, recorded, rocks, siliceous, stone, substrates, wales, walls