@inbook {4802,
	title = {Chrysothrix},
	booktitle = {Lichens of Great Britain and Ireland},
	year = {2009},
	pages = {307-309},
	publisher = {British Lichen Society},
	organization = {British Lichen Society},
	address = {London},
	author = {Fletcher, A. and Purvis, O.W.}
}
