@inbook {4647,
	title = {Protoparmelia},
	booktitle = {Lichen Flora of the Greater Sonoran Desert Region},
	volume = {2},
	year = {2004},
	pages = {425-430},
	publisher = {Lichens Unlimited},
	organization = {Lichens Unlimited},
	address = {Tempe, Arizona},
	author = {Ryan, B.D. and Nash, T.H. and Hafellner, J.}
}
