Common orange lichen, Xanthoria parietina, showing red fluorecence in ultraviolet light (365 nm). Smaller image showing same sample in normal daylight

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Common orange lichen, Xanthoria parietina, showing red fluorecence in ultraviolet light (365 nm). Smaller image showing same sample in normal daylight.

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Size: 4371px × 2914px
Photo credit: © Henri Koskinen / Alamy / Afripics
License: Royalty Free
Model Released: No

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