| British Lichen Society - Advance interest in all branches of lichenology. Includes comprehensive information on British lichens. |
| Churchyard Lichens - General information. |
| Dutch Bryological and Lichenological Society - Species list, herbaria, and publications. |
| Dutch Lichens - Photos and information about lichen biology. In Dutch and English. |
| Endangered Lichens - List of species protected by law in different countries. |
| Information about Lichens - Description, structure, and environmental importance. |
| Introduction to Lichens - Information about lichens including fossil record, life history, ecology, morphology and systematics. |
| Invasion of Pollution-tolerant Lichens - Research on the distribution of four pollution-tolerant non-native lichens in the Pacific Northwest. |
| Lichen Biology - Introduction to lichens, which are stable, self-supporting associations between fungi (most commonly Ascomycota) and photobionts (algae or cyanobacteria). Intended for university students. |
| Lichen Research Program, University of Maine at Fort Kent - Information about Steve Selva's research program in lichenology. Includes a photo gallery of stubble lichens under the microscope. |
| LichenLand - General information for young students including synoptic key and photos. |
| Lichens of North America - Information about lichen biology, lichens and wildlife, lichens and people, and the book of the same title, which was published in 2001. |
| Lichens.de - Photos of lichens taken during British Lichen Society field trips in Britain. Contains general information and related links. |
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Looking for Lichens - Weblog with photos and descriptions. |
| New Zealand Forest Lichens - Photographs, general information, identification and related links. |
| North American Lichen Checklist - List of cumulative updates to the most recently published North American checklist by Esslinger and Egan (1995). |
| Queensland Lichens - General information on subtropical lichens from Queensland, Australia. Includes keys to genera and species, and glossary. |
| Roccella - Lichen genus found in Venezuela. |
| Taxonomy of Philippine Lichens - Brief information and links by researcher Isidro T. Savillo. |
