There is a British Lichen Society which provides all your lichen related needs.
Lichens are a particularly unusual class of organisms.
The plant-like living things are made up of fungi growing in association with other life forms, such as algae. There are more than 2,000 species in Britain and Ireland alone.
Image: Alan Parkinson, shared under CC license.
The British Lichen Society website has some useful documents for those wanting to know more about these organisms.
They can indicate the quality of the air in a city, for example, and the rate of growth can give clues as to when ice receded to reveal bare rock outcrops.
More to come in time...
Update:
Did you know?
— Massimo (@Rainmaker1973) February 4, 2024
Lichen survived 18 months attached to outside of International Space Station.
When lichens were attached to the outside of the International Space Station for 18 months they survived the vacuum of space, no water, extreme temperatures and the full onslaught of… pic.twitter.com/P5Zmqcvwid
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