A genus of lichens that grow on rocks and have circular, disk-like formations with concentric rings.
From Greek 'gyros' (circle) + 'phorein' (to bear, carry). Named for the circular, ring-bearing structure of the lichen.
Gyrophora lichens are ancient survivors that can grow on bare rock in extreme environments—their circular growth rings actually mark years of survival, making them living records of climate history.
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