@article {4348,
	title = {Parmelina quercina (Parmeliaceae, Lecanorales) includes four phylogenetically supported morphospecies},
	journal = {Biological Journal of the Linnean Society},
	volume = {91},
	year = {2007},
	pages = {455-467},
	doi = {10.1111/j.1095-8312.2007.00810.x},
	url = {http://blackwell-synergy.com/doi/abs/10.1111/bij.2007.91.issue-3},
	author = {Arg{\"u}ello, A. and del Prado, R. and Cubas, P. and Crespo, A.}
}
