Updates of these data are being provided by Dr. Egan and his collaborators in 1995 and 1997. It is planned to incorporate Hawaii and the Caribbean territories in the near future.
Distributional data exist for a couple of demonstration states.
Roger Rosentreter, USDI-Bureau of Land Management, has provided us access to some lichen common names from an unpublished manuscript. If you would like to learn more about lichens, we recommend that you access Oregon State University's informative and entertaining Fun with Lichens Website.