» Arizona State University Lichen Herbarium    Information about the collection, the Sonoran Desert Lichen Flora Project, research, and online course material.    http://ces.asu.edu/ASULichens/

» British Lichen Society    Advance interest in all branches of lichenology. Includes comprehensive information on British lichens.    http://www.thebls.org.uk/

» Churchyard Lichens    General information.    http://www.open.ac.uk/Nature_Trail/Lichen.htm

» Dutch Bryological and Lichenological Society    Species list, herbaria, and publications.    http://www.blwg.nl/mossen/english.aspx

» Dutch Lichens    Photos and information about lichen biology. In Dutch and English.    http://www.homepages.hetnet.nl/~matthieuvw/

» Endangered Lichens    List of species protected by law in different countries.    http://www.botany.hawaii.edu/cpsu/endlich.html

» European Species of the Lecanoraceae Family    Information on monograph.    http://biotop.umcs.lublin.pl/users/zglobek/lichens.htm

» Information about Lichens    Description, structure, and environmental importance.    http://bionet.informatik.uni-oldenburg.de/aerodata/lichenes/einfo.htm

» Introduction to Lichens    Information about lichens including fossil record, life history, ecology, morphology and systematics.    http://www.ucmp.berkeley.edu/fungi/lichens/lichens.html

» Invasion of Pollution-tolerant Lichens    Research on the distribution of four pollution-tolerant non-native lichens in the Pacific Northwest.    http://lichens.science.oregonstate.edu/invasion.htm

» 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.    http://bugs.bio.usyd.edu.au/Mycology/Plant_Interactions/Lichen/lichenBiology.shtml

» 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.    http://csdept.umfk.maine.edu/LichensWebsite/home.asp

» LichenLand    General information for young students including synoptic key and photos.    http://mgd.nacse.org/hyperSQL/lichenland/index.html

» 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.    http://www.lichen.com/

» Lichens.de    Photos of lichens taken during British Lichen Society field trips in Britain. Contains general information and related links.    http://www.lichens.de

» Looking for Lichens    Weblog with photos and descriptions.    http://zeepoeder.blogspot.com/

» New Zealand Forest Lichens    Photographs, general information, identification and related links.    http://hiddenforest.co.nz/lichens

» North American Lichen Checklist    List of cumulative updates to the most recently published North American checklist by Esslinger and Egan (1995).    http://www.ndsu.nodak.edu/instruct/esslinge/chcklst/chcklst7.htm

» Queensland Lichens    General information on subtropical lichens from Queensland, Australia. Includes keys to genera and species, and glossary.    http://members.westnet.com.au/roderickrogers/index.htm

» Rhode Island's Foliose and Fruticose Lichens    Habitat notes, distribution maps, and color photographs of over 90 species of macrolichens by Don Flenniken.    http://www.uri.edu/ce/rinhs/webpubs/lichens/

» Roccella    Lichen genus found in Venezuela.    http://www.angelfire.com/ri/liquen/

» Taxonomy of Philippine Lichens    Brief information and links by researcher Isidro T. Savillo.    http://www.geocities.com/lichens_2001/lichens_2001.html