Covers all aspects of British lichens, revealing the secrets of their success in colonising a vast range of habitats. An introductory chapter looks at how lichens have been used throughout history in medicines, dyes, food and perfumes. The book goes on to describe what lichens are, and how they grow and reproduce. A detailed survey is given of the range of habitats in which lichens can be found: trees, rocks, heaths and moors, chalk and limestone, mountains, rivers, lakes, coasts and buildings, perhaps most famously on churches and in churchyards. Gilbert also discusses how susceptible lichens are to pollution, and how they can be used to detect environmental pollution levels.
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