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A colourful foliose lichen on a tree in Graz. Inconspicuous, but omni present. Lichen can be found in every environment. They are important environmental marker for air quality.
Last year the OLGA people collected a lot of Lichen samples.

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chaos.social

chaos.social - because anarchy is much more fun with friends.
chaos.social is a small Mastodon instance for and by the Chaos community surrounding the Chaos Computer Club. We provide a small community space - Be excellent to each other, and have a look at what that means around here.
Follow @ordnung for low-traffic instance-related updates.
The primary instance languages are German and English.