Literature

Authors	Year	Title
H. J. M. Sipman, Raus T.	1999	A Lichenological Comparison of the Paros and Santorini Island Groups (Aegean, Greece), with Annotated Checklist
M. A. G. Otálora, Aragón, G., Mart{\'ınez, I., Molina, M. C.	2004	A new corticolous species of Leptogium (Collemataceae) from Spain
P. Magnus Jørgensen	2004	A New North American Species of the Lichen Genus Staurolemma (Collemataceae)
P. Magnus Jørgensen	2004	A New North American Species of the Lichen Genus Staurolemma (Collemataceae)
T. D. V. Swinscow, Krog H.	1986	A new species in the genus Collema from East Africa
W. Nylander	1879	Addenda nova ad Lichenographiam Europaeam
H. Kristinsson	1981	Additions to the lichen flora of Iceland II
J. Walter Thomson, Brehmer B.	1984	American Arctic Lichens I. The Macrolichens
	2009	ArtDatabanken Swedish Species Information Centre
P. M. McCarthy	2010	Checklist of the Lichens of Australia and its Island Territories
R. Haugan	1995	Collema conglomeratum new to Fennoscandia
T. Tønsberg	1993	Collema leptaleum new to Europe
	2002	Commitee on the Status of Endangered Wildlife in Canada (COSEWIC)
B. McCune, Hutchinson, J., Berryman, S.	2002	Concentration of Rare Epiphytic Lichens along Large Streams in a Mountainous Watershed in Oregon, U.S.A.
T. Goward, Arsenault A.	2000	Cyanolichens and conifers: implications for global conservation
F. Bungartz	2008	Cyanolichens of the Galapagos Islands- The genera Collema and Leptogium
V. John, Breuss O.	2004	Flechten der östlichen Schwarzmeer-Region in der Türkei
J. Dey	1978	Fruticose and Foliose Lichens of the High-Mountain Areas of the Southern Appalachians
P. M. Jørgensen	1994	Further notes on European Taxa of the Lichen Genus Leptogium, with emphasis on the small species
P. M. Jørgensen, Henssen A.	1999	Further Species of the Lichen Genus Staurolemma (Collemataceae, Lichenized Ascomycetes)
D. ERTZ, Diederich P.	2006	Gelatinopsis leptogii (Helotiales, Ascomycota), a new lichenicolous fungus on Leptogium byssinum from Belgium and Germany
R. P. Cameron, Neily T.	2008	Heuristic model for identifying the habitats of Erioderma pedicellatum and other rare cyanolichens in Nova Scotia, Canada
S. L. Thrower	1988	Hong Kong Lichens
	2008	Index Fungorum [taxonomy information]
T. Tønsberg	1994	Leptogium cochleatum and Rinodina isidioides new to Scandinavia
M. Lindström	1993	Leptogium degelii, a new species from South America
P. M. Jørgensen	1994	Leptogium palustre, a new Lichen from East Africa
D. Stone, Ruchty A.	2008	Leptogium siskiyouensis, a new epiphytic lichen species from the Pacific Northwest of the United States
K. Yazici	1999	Lichen flora of Trabzon [Trabzon ili likenleri]
W. Nylander	1858	Lichenes collecti in Mexico a Fr. Müller
V. Alstrup, Hansen, E. Steen, Daniels, F. J. A.	2000	Lichenized, lichenicolous and other fungi from North and North-East Greenland
O. Gilbert	2000	Lichens
J. W. Thomson, Ahti T.	1994	Lichens Collected on an Alaska Highway Expedition in Alaska and Canada
I. M. Brodo, Sharnoff, S. Duran, Laurie-Bourque, S., Sharnoff, S.	2001	Lichens of North America
B. McCune	1982	Lichens of the Swan Valley, Montana
C. W. Harris	1904	Lichens: Collema and Leptogium
C. M. Wetmore	1976	Macrolichens of Big Bend National Park, Texas
T. D. V. Swinscow, Krog H.	1988	Macrolichens of East Africa
B. Büdel, Meyer, A., Salzar, N., Zellner, H., Zotz, G., Lange, O. L.	2000	Macrolichens of montane rain forests in Panama, Province Chiriqu{\'ı
B. McCune, Geiser L.	1997	Macrolichens of the Pacific Northwest
J. L. E. Peck, Grabner, J., Ladd, D., Larson, D. R.	2004	Microhabitat affinities of Missouri Ozarks Lichens
A. Aptroot	2002	New and interesting lichens and lichenicolous fungi in Brazil
G. Aragón, mart{\'ınez, I., Otálora, M. A. G.	2004	New data on the distribution of Leptogium azureum (Swartz) Mont.
A. W. C. T. Herre	1951	New Lichens and Other Additions to the Lichen Flora of the Philippine Islands
C. M. Thomas	1996	New report of lichens from southern Africa
A. Aptroot, Sparrius, L. B., Lai, M. - J.	2002	New Taiwan Macrolichens
C. J. B. Hitch, Millbank J. W.	1975	Nitrogen Metabolism in Lichens. VII. Nitrogenase Activity and Heterocyst Frequency in Lichens with Blue-Green Phycobionts
P. M. Jørgensen, Tønsberg T.	1999	Notes on Some Small Species of Leptogium from Pacific North America
T. Goward, Diederich, P., Rosentreter, R.	1994	Notes on the Lichens and Allied Fungi of British Columbia II
R. P. Cameron, Richardson D. H. S.	2006	Occurrence and Abundance of Epiphytic Cyanolichens in Protected Areas of Nova Scotia