Churchyard Lichens Factsheet - An attempt to provide at least some partial answers to requests for information about churchyard lichens and to suggest other sources of information.
Endangered Lichens - Lichens that are protected by law in the countries listed.
Lichenology in the Netherlands - This website provides a checklist and Red List of the lichens and lichenicolous fungi of the Netherlands, and additional information about projects and publications.
Lichens - Consist of a symbiosis between an algae and a fungus.