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Lichen (X parietina)

A very common lichen tolerant of pollution found on trees, rocks, and walls, especially on bird perching sites such as fence posts and milestones.


The records for this species have been organised into reports, charts, maps and photos. Click a pic below to see the detail:

What should I know?

Where can I see it?

Where is it seen most often?

When can it be seen?

Where has it been seen recently?

What does it look like?

What can you tell me about it?