@inbook {4958,
	title = {Trapelia},
	booktitle = {Lichens of Great Britain and Ireland},
	year = {2009},
	pages = {904-908},
	publisher = {British Lichen Society},
	organization = {British Lichen Society},
	address = {London},
	author = {Purvis, O.W. and Coppins, B.J. and Wolseley, P.A. and Fletcher, A.}
}
