Lichen based index to nitrogen air quality guide
Ideal for small-scale scientific investigations, a fast guide to lichens on oak and birch trees as indicators of local levels of nitrogen-containing pollutants.
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Rocky shore lichens guide
A guide to 62 common species of lichen found on rocky sea shores, between the low tide mark and up to the limit of sea spray.
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Churchyard lichens guide
Identify over 50 common lichens found in churchyards in Britain, with photos and straightforward keys.
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Lichens on twigs guide
Identify 60 common lichens found growing on trees and shrubs in Britain, grouped according to growth form. Lichens are highly sensitive to subtle changes in environmental conditions.
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Urban lichens 1 guide
The Urban lichens 1 guide features 49 lichens found growing on trees and wood, including sawn wood, like fences, gates and park benches.