Lichen resources and groups
Checklist of North American lichens – The authoritative species list for the continent, updated periodically.
California Lichen Society – California’s finest (and only) lichen organization. Join the listserv too to stay in the know about exciting lichen events.
Ways of Enlichenment – Read Trevor Goward’s fascinating essay series. You’ll never see lichens the same way again.
Back issues of the Bulletin of the California Lichen Society – Issues older than 2 years are free to the public. Lots of interesting articles, field trip reports, etc.
Northwest Lichenologists – Arguably the energetic centroid of the North American lichen scene!