Some lichen observations from Great Smoky Mountains National Park (and a few nearby localities).
A list of the lichens in the park can be generated at the Lichens of the US National Parks web site.
References:
Class Ascomycetes (Lichens) – Biodiversity of Great Smoky Mountains National Park
Jonathan P. Dey, Fruticose and Foliose Lichens of the High-Mountain Areas of the Southern Appalachians, The Bryologist, Vol. 81, No. 1 (Spring, 1978), pp. 1-93. (Free access to JSTOR articles may be available from a local public or university library.) This fine article was a product of Jonathon Dey’s Ph.D. thesis at Duke University, under the guidance of the Culbersons. Dey is a professor at Illinois Wesleyan University, and just this year (2009) won his university’s highest award for teaching excellence. Congratulations, Prof. Dey!
Bruce McCune, et al., Regional Gradients in Lichen Communities of the Southeast United States, The Bryologist, Vol. 100, No. 2 (Summer, 1997), pp. 145-158. The authors report two gradients in lichen diversity in the southeastern US: increasing diversity from the coast to the piedmont to the mountains, and decreasing diversity near pollution sources. The tables in this article are rich in details on the local distribution of epiphytic macrolichens in the southeastern US.
