@article {2483,
	title = {Key to European Usnea species},
	journal = {Bibliotheca Lichenologica},
	volume = {100},
	year = {2009},
	pages = {419-462},
	url = {http://home.comcast.net/~nwlichens/Randlane_et\%20al_2009Usnea.pdf},
	author = {Randlane, T. and T{\~o}rra, T. and Saag, A. and Saag, L.}
}
@article {2479,
	title = {Testing the use of ITS rDNA and protein-coding genes in the generic and species delimitation of the lichen genus Usnea (Parmeliaceae, Ascomycota)},
	journal = {Molecular Phylogenetics and Evolution},
	volume = {68},
	year = {2013},
	pages = {357-372},
	issn = {10557903},
	doi = {10.1016/j.ympev.2013.04.005},
	author = {Truong, C. and Divakar, P.K. and Yahr, R. and Crespo, A. and Clerc, P.}
}
@article {2475,
	title = {DNA barcoding of lichenized fungi demonstrates high identification success in a floristic context},
	journal = {New Phytologist},
	volume = {191},
	year = {2011},
	pages = {288-300},
	doi = {10.1111/j.1469-8137.2011.03677.x},
	author = {Kelly, L.J. and Hollingsworth, P.M. and Coppins, B.J. and Ellis, C.J. and Harrold, P. and Tosh, J. and Yahr, R.}
}
@article {2474,
	title = {Phylogenetic relations of European shrubby taxa of the genus Usnea},
	journal = {Lichenologist},
	volume = {43},
	year = {2011},
	pages = {427-444},
	issn = {0024-2829},
	doi = {10.1017/S0024282911000375},
	author = {Saag, L. and T{\~o}rra, T. and Saag, A. and Del-Prado, R. and Randlane, T.}
}
@inbook {2472,
	title = {Usnea},
	booktitle = {Lichens of Great Britain and Ireland},
	year = {2009},
	publisher = {British Lichen Society},
	organization = {British Lichen Society},
	address = {London},
	author = {James, P.W. and Clerc, P. and Purvis, O.W.}
}
