@inbook {4293,
	title = {Rhizocarpon},
	booktitle = {Lichens of Great Britain and Ireland},
	year = {2009},
	pages = {792-808},
	publisher = {British Lichen Society},
	organization = {British Lichen Society},
	address = {London},
	author = {Fletcher, A. and Gilbert, O.L. and Clayden, S. and Fryday, A.M.}
}
