- Churchyard Lichens Fact Sheet - http://www.argonet.co.uk/users/jmgray/churyd.htm
Provides answers to common questions with a list of other sources of information.
- Introduction to Lichens - http://www.ucmp.berkeley.edu/fungi/lichens/lichens.html
Information about lichens - their fossil record, life history, ecology, morphology and systematics.
- Endangered Lichens - http://www.botany.hawaii.edu/cpsu/endlich.html
List of species protected by law in different countries.
- Roccella - http://www.angelfire.com/ri/liquen
Lichen genus found in Venezuela.
- Information about Lichens - http://bionet.informatik.uni-oldenburg.de/aerodata/lichenes/einfo.htm
Description, structure, and environmental importance.
- Dutch Lichens - http://www.homepages.hetnet.nl/~matthieuvw/
Photos and information about lichen biology. In Dutch and English.
- New Zealand Forest Lichens - http://hiddenforest.co.nz/lichens
Photographs, general information, identification and related links.
- Lichens of North America - http://www.lichen.com/
Information about lichen biology, lichens and wildlife, lichens and people, and the book of the same title, which was published in 2001.
- British Lichen Society - http://www.thebls.org.uk/
Advance interest in all branches of lichenology. Includes comprehensive information on British lichens.
- Lichenology in the Netherlands - http://www.biodiv.nl/lichens/
Red list including lichenicolous fungi, and additional information about projects and publications.
- North American Lichen Checklist - http://www.ndsu.nodak.edu/instruct/esslinge/chcklst/chcklst7.htm
List of cumulative updates to the most recently published North American checklist by Esslinger and Egan (1995).
- LichenLand - http://mgd.nacse.org/hyperSQL/lichenland/index.html
General information for young students including synoptic key and photos.
- Invasion of Pollution-tolerant Lichens - http://lichens.science.oregonstate.edu/invasion.htm
Research on the distribution of four pollution-tolerant non-native lichens in the Pacific Northwest.
- Lichens.de - http://www.lichens.de
Photos of lichens taken during British Lichen Society field trips in Britain. Contains general information and related links.
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