@article {127,
	title = {The Genus Leptogium in North America North of Mexico},
	journal = {The Bryologist},
	volume = {67},
	number = {67},
	year = {1964},
	pages = {245-317},
	chapter = {245},
	url = {http://www.jstor.org/stable/pdfplus/3240893.pdf},
	author = {Herbert A. Sierk}
}
@book {1453,
	title = {Lichens},
	series = {The new naturalist},
	year = {2000},
	pages = {288},
	publisher = {HarperCollins},
	organization = {HarperCollins},
	address = {London},
	isbn = {0002200821},
	author = {Oliver Gilbert}
}
@article {732,
	title = {Index Fungorum [taxonomy information]},
	year = {2008},
	url = {http://www.indexfungorum.org/Names/Names.asp}
}
