Lichens. Powdered orange (Xanthoria fallax, orange) and powdered rosette (Physcia caesia, grey) lichen on rock. Lichens are organisms formed by the sy

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Lichens. Powdered orange (Xanthoria fallax, orange) and powdered rosette (Physcia caesia, grey) lichen on rock. Lichens are organisms formed by the symbiotic association of a fungus and a green alga or cyanobacterium.

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Photo credit: © KAJ R. SVENSSON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: alga, biological, biology, botanical, botany, caesia, fallax, fungi, fungus, grey, lichen, lichens, microbiological, microbiology, mutualism, nature, orange, physcia, powdered, rock, rosette, surface, symbiosis, symbiotic, wall, xanthoria