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Foliose Lichen

Observed: 1st December 2009 By: mp6967
S159 Neighbourhood Nature - course complete
DSC00838 Foliose lichen

Yellow-green foliose lichen on East facing drystone wall. Growing alongside pale green foliose lichen.


Caution: Do NOT use iSpot to identify fungi to eat!

Some fungi are very poisonous so a mistaken ID could have serious consequences.

Species interactions

No interactions present.

Species with which Common Orange Lichen (Xanthoria parietina) interacts


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Both of these species are

Both of these species are found on trees as well as on rock and will key out using The Natural History Museum's 'Guide to lichens on twigs'.

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See OPAL Air Survey info

This is one of the species used as an indicator of nitrogen pollution in the OPAL Air Survey. Visit for photos of Xanthoria parietina, photos of other lichens in the survey, and online keys to identify them.

Sarah West
OPAL Community Scientist
Yorkshire and Humber