The British Lichen Society
Provides a list of lichens found in the UK, plus information on recording and mapping, particularly in churchyards. Also includes event details and publication lists.
Provides an identification guide for lichens in Britain and Ireland, with background on what they are, where to find them, their habitats, and their value as ecological indicators of air quality.
A project to determine the status and distribution of lichen species throughout the island of Ireland; with identification resources and distribution maps.
The Stackpole Lichens
Information about a churchyard in south Pembrokeshire, well-known as a site with more lichen species than any other in Britain.