Welcome to the British Lichen Society

The British Lichen Society welcomes all who are interested in lichens, whether you are a complete beginner or someone with a life-time’s experience of lichenology. Throughout the world, but with a special emphasis on the British Isles, our aims are:

  • to promote and advance the teaching and study of lichens;
  • to encourage and actively support the conservation of lichens and their habitats;
  • to raise public awareness of the beauty of lichens and of their importance as indicators of the health of our environment.

We work towards these aims through field meetings, workshops and recording projects. Our Bulletin is packed with information about lichens, lichenologists and events, and we also publish a highly regarded scientific journal, The Lichenologist.

Lichen Hunting in Mid-Wales - © Alan D. Hale
Usnea florida - © Alan D. Hale
Lobaria pulmonaria - © Alan D. Hale
Dibaeis baeomyces
Cladonia diversa - © Ray G. Woods
Lichens on Concrete Children - © Mike Simms
Cladonia cervicornis ssp. verticillata - © Paul L. Smith
BLS Field Meeting - © Mike Simms
Cladonia display - © Karen Dillman
Teloschistes chrysophthalmus - © Paul Whelan

About Lichens

Learn about the fascinating dual nature of lichens and how two completely different types of organisms come together to make something quite new. Find here also information on lichen ecology, habitats and conservation.

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Churchyard Lichens

Churchyard Lichens

Churchyards in unpolluted areas provide extremely important refuges for many lichens. The BLS has a group dedicated to the study and conservation of churchyard lichens.

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Join and Renew

Become a member of BLS and enjoy access to field meetings and workshops, the Bulletin, The Lichenologist (printed or online), referees to help with lichen identification, and many other benefits.

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Recent news

  • Revisions of British and Irish Lichens - Arthoniaceae
  • Covid-19 - letter from BLS President
  • AGM and British Lichen Conference
  • Change of charitable status
  • Dobson 7th edition
See the News page for further details

Social media

We now have active Twitter (@BLSlichens) and Facebook (@BLSlichensF) accounts, and would love to hear from you with your lichen finds, mysteries and other news.

Information Resources

Under the Resources section of the website you will find a wealth of useful information relating to lichens in Britain and Ireland, including a taxon dictionary, species accounts and distribution maps, draft accounts for the new Lichens of Great Britain and Ireland, useful downloads, information on our publications, library and herbarium, useful links and contact details.