Orange lichen on sandstone. Lichens are formed from the a symbiotic association between a fungus and an alga. The alga is contained within the hyphae

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Orange lichen on sandstone. Lichens are formed from the a symbiotic association between a fungus and an alga. The alga is contained within the hyphae (filaments) of the fungus. Lichens are slow-growing, and are usually found on stones and the bark of trees. Photographed in the Western Cape, South Africa.

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Size: 5616px × 3744px
Photo credit: © DR NEIL OVERY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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