Title: Biblio RTF Export
Author: Biblio 7.x

J. Walter Thomson and Brehmer, B., American Arctic Lichens I. The Macrolichens. Columbia University Press, 1984.

O. W.  Purvis, Moore, D. M., Coppins, B. J., Hawksworth, D. L., and James, P. W., The Lichen Flora of Great Britian and Ireland. London: Natural History Museum Publications, 1992.

D. Dharani Awasthi, A key to the Microlichens of India, Nepal, and Sri Lanka, vol. 40. 1991.

O.  Gilbert, Lichens. London: HarperCollins, 2000, p. 288.

J. W.  Hinds and Hinds, P. L., The Macrolichens of New England, vol. 96. China: The New York Botanical Garden Press, 2007.