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Lichen growing on branch

Lichen growing on branch

C023/8689

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Credit

CORDELIA MOLLOY / SCIENCE PHOTO LIBRARY CORDELIA MOLLOY / SCIENCE PHOTO LIBRARY

Caption

Multiple lichen species growing on a fallen branch in unpolluted air. 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. They are sensitive to pollution, and are a good indicator of air quality. Shrubby (fruticose) and leafy (foliose) lichens, seen here, tend to be more sensitive to atmospheric pollution than crustose species. Photographed in Snowdonia, North Wales, UK.

Release details

Model release not required. Property release not required.

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