The following list includes all Washington State lichen taxa housed in the University of Washington Herbarium (c. 800). Currently, the list does not include type specimens. Lichen collections from WTU are available for loan to researchers at recognized institutions. Please address requests to Dr. David Giblin, Herbarium Collections Manager.

Nomenclature follows that found in “A Cumulative Checklist for the Lichen-forming, Lichenicolous and Allied Fungi of the Continental United States and Canada” (Esslinger, T. L. 1997. Most Recent Update: 10 April 2006). If you cannot find the taxon for which you are looking, please check for possible synonyms.

Note that this is not a complete list of lichens found in Washington State. The list represents those lichens found in our herbarium. This list will be updated as taxa are added to the collection. Several names may also represent older synonyms that were identified from resources used at the time of collections. Names were updated to their current nomenclature, whenever possible, but accurate identifications of the species may not be correct. Several large genera contain a number of “sp.” collections. Please keep this in mind if requesting a loan. If there are questions regarding the validity of the names or the current names we welcome any correspondence to make this list as accurate as possible. Please send e-mails to Dr. Katherine Glew, Curatorial Associate, WTU Herbarium.

If you are aware of lichen species that should be included for the state, but are not listed, please inform Dr. Glew. Donations to the WTU Herbarium are enthusiastically received. We will add names to the Washington list with a verified voucher or reference to a collection in an authorized herbarium.

List prepared by Christopher Barnes, Dan Paquette and Katherine Glew.