@inbook {4217,
	title = {Petractis},
	booktitle = {Lichens of Great Britain and Ireland},
	year = {2009},
	pages = {689-690},
	publisher = {British Lichen Society},
	organization = {British Lichen Society},
	address = {London},
	author = {Seaward, M.R.D. and Aptroot, A.}
}
@inbook {4084,
	title = {Pseudevernia},
	booktitle = {Lichens of Great Britain and Ireland},
	year = {2009},
	pages = {759},
	publisher = {British Lichen Society},
	organization = {British Lichen Society},
	address = {London},
	author = {Seaward, M.R.D. and Purvis, O.W.}
}
@inbook {4004,
	title = {Squamarina},
	booktitle = {Lichens of Great Britain and Ireland},
	year = {2009},
	pages = {851},
	publisher = {British Lichen Society},
	organization = {British Lichen Society},
	address = {London},
	author = {Seaward, M.R.D.}
}
