@inbook {4181,
	title = {Pertusaria},
	booktitle = {Lichens of Great Britain and Ireland},
	year = {2009},
	pages = {673-687},
	publisher = {British Lichen Society},
	organization = {British Lichen Society},
	address = {London},
	author = {Chambers, S.P. and Gilbert, O.L. and James, P.W. and Aptroot, A. and Purvis, O.W.}
}
