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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Local Groups

Local Groups

Find out if there's a local group near you. Learning about lichens as part of a group is often the best way to progress - and more fun. Beginners are very welcome.

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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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Quick links

These links will take you directly to the most used parts of this website:

Meetings and events

Local groups

Distribution maps

Species descriptions


BLS taxon dictionary


Social media

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

The British Lichen Society YouTube channelCheck out the videos on our YouTube channel - please subscribe!

Looking for something?

General information on lichen biology, identification and conservation can be found on the Learning, Conservation and Identification menus. Guidance on submitting records to the BLS database and how to get access to that data is on the Recording menu. Have a look under The Society menu to find out about us