@book {628,
	title = {Studies in Pseudocyphellaria (lichens) III. The South American Species},
	year = {1992},
	publisher = {J. Cramer},
	organization = {J. Cramer},
	address = {Berlin and Stuttgart},
	author = {David J. Galloway}
}
@article {697,
	title = {Studies in Pseudocyphellaria (Lichens) II. Ecuadorean species},
	journal = {The Lichenologist},
	volume = {22},
	number = {2},
	year = {1990},
	pages = {103-135},
	author = {David J. Galloway and L. Arvidsson}
}
