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Parmelia sulcata
Greenish blueish, crusty, flat lichen, with a black underside
Lichen is growing on a metal fence near a forest
A lichen is not a single organism, but a symbiotic relationship between 2 fungi and an algae. Some lichens grow very fast, while others grow very slowly, and can live for thousands of years. Lichens also live in a wide range of habitats. Some live in the tropical Amazon Rainforest, while others live in freezing Antarctica and Franz Josef Land.
Spotted on Mar 6, 2022
Submitted on Mar 6, 2022
