Allen, A. (2007). Lundy lichens, Lundy Field Society. [Details to obtain this excellent booklet, invaluable for south-western coastal lichens, are on the BLS website.]
Arup, U. (2006). A new taxonomy of the Caloplaca citrina group in the Nordic countries, except Iceland. Lichenologist 38: 1–20.
Arup, U., Ekman, F., Kärnefelt, I., & Mattsson, J.E. (1997). Syyddsvärda lavar i sydvästra Sverige, SBF-förlaget, Lund.
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Breitenbach, J., & Kränzlin, F. (1986). Fungi of Switzerland, vol. 2: Non-gilled fungi: Heterobasidiomycetes, Aphyllophorales, Gasteromycetes, Verlag Mykologia, Lucerne.
Breitenbach, J., & Kränzlin, F. (1991). Fungi of Switzerland, vol. 3: Boletes and agarics 1st part, Edition Mykologia, Lucerne.
Britton, A. (n.d.) [2008]. The montane heathland lichen guide, Macaulay Institute, Aberdeen.
Brodo, I.M., Sharnoff, S.D., & Shjarnoff, S. (2001). Lichens of North America, Yale University Press, New Haven. [This magnificent work should be on the shelves of every lichenologist – providing their shelves are strong enough.]
Buczacki, S., Shields, C., & Ovenden, D. (2012). Collins fungi guide, HarperCollins Publishers, London.
Bungartz, F., Nordin, A., & Grube, U. (2007). Buellia, in Nash, T.H., Gries, C.& Bungartz, F., (eds.), Lichen flora of the Greater Sonoran Desert region, vol. 3, Arizona State University, Tempe, pp. 113–179.
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Coppins, B.J., & James, P.W. (1984). New or interesting lichens V. Lichenologist 16: 241–264. [Includes an account and revision of Trapelia and Trapeliopsis.]
Courtecuisse, R., & Duhem, B. (1995). Mushrooms & toadstools of Britain & Europe, Harper Collins, London.
Dalby, D.H., & Dalby, C. (2005). Shetland lichens, Shetland Amenity Trust, Lerwick.
Diederich, P. (1996). The lichenicolous heterobasidiomycetes. Bibliotheca Lichenologica 61: 198 pp.
Dobson, F.S. (2005). Lichens. An illustrated guide to the British and Irish species, ed. 5, Richmond Publishing Co., Slough.
Dobson, F.S. (2011). Lichens. An illustrated guide to the British and Irish species, ed. 6, Richmond Publishing Co., Slough.
Elborne, S.A. (2008). Lichenomphalia Redhead, Lutzoni, Moncalvo & Vilgalys, in Knudsen, H., & Vesterholt, J., (eds.), Funga Nordica, agaricoid, boletoid and cyphelloid genera, Nordsvamp, Copenhagen, pp. 223–225.
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Gaya, E. (2009). Taxonomical revision of the Caloplaca saxicola group (Teloschistaceae, lichen-forming Ascomycota). Bibliotheca Lichenologica 101: 191 pp.
Gulden, G., Jenssen, K.M., & Stordal, J. (1985). Arctic and alpine fungi, vol. 1, Soppkonsulenten, Oslo.
Gulden, G., & Jenssen, K.M. (1988). Arctic and alpine fungi, vol. 2, Soppkonsulenten, Oslo.
Hansen, L., & Knudsen, H., (eds.) (1997). Nordic macromycetes, vol. 3: Heterobasidioid, aphyllophoroid and gasteromycetoid basidiomycetes, Nordsvamp, Copenhagen.
Hansen, S., & Anderson, J. (1995). Greenland lichens, Rhodos International Science & Art [Copenhagen].
Hawksworth, D.L. (1976). New and interesting microfungi from Slapton, South Devonshire: Deuteromycotina III. Transactions of the British Mycological Society 67: 51–59.
Hawksworth, D.L. (1979). The lichenicolous Hyphomycetes. Bulletin of the British Museum (Natural History), Botany 6(3): 183–300.
Hawksworth, D.L. (1981). The lichenicolous Coelomycetes. Bulletin of the British Museum (Natural History), Botany 9(1): 1–98.
Hawksworth, D.L. (1983). A key to the lichen-forming, parasitic, parasymbiotic and saprophytic fungi occurring on lichens in the British Isles. Lichenologist 15: 1–44.
Hawksworth, D.L. (2003). The lichenicolous fungi of Great Britain and Ireland: an overview and annotated checklist. Lichenologist 35: 191–232.
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Jülich, W. (1984). Kleine Kryptogamenflora: vol. IIb/1, Basidiomyceten 1, Die Nichtblätterpilze, Gallertpilze und Bauchpilze, Gustav Fischer Verlag, Stuttgart.
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Krog, H., Østhagen, H., & Tønsberg, T. (1994). Lavflora. Norske busk- og bladlav, Universitetsforlaget AS, Oslo.
Krzewicka, B. (2004). The lichen genera Lasallia and Umbilicaria in the Polish Tatra Mts. Polish Botanical Studies 17: 1–88.
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Nordic Lichen Flora: Ahti, T. et al. (eds.) (1999). Vol 1. Introductory parts, calicioid lichens and fungi, Nordic Lichen Society, Uddevalla.
Nordic Lichen Flora: Ahti, T. et al. (eds.) (2002). Vol 2. Physciaceae, Nordic Lichen Society, Uddevalla.
Nordic Lichen Flora: Ahti, T. et al. (eds.) (2007). Vol 3. Cyanolichens, Uppsala University/Nordic Lichen Society, Uddevalla.
Nordic Lichen Flora: Thell, A., & Moberg, R. (eds.) (2011). Vol 4. Parmeliaceae, Uppsala University/Nordic Lichen Society, Uppsala. [The photographs in this volume have been printed much too dark, but fortunately the same photographs are provided on the accompanying photo-CD.]
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Valcárcel, C.P., Prado, C.L., & de Silanes Vázquez, E.L., (2003). Guía dos liques de Galicia, Baía Edicióons, Coruña. [I have not yet systematically added references to this book as several photographs do not match my understanding of the species concerned, but it is valuable for crustose taxa.]
van Herk, K., & Aptroot, A. (2004). Veldgids korstmossen, KNNV Uitgeverij, Utrecht.
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Wirth, V. (1995). Die Flechten Baden-Württembergs, ed. 2 (2 vols), Eugen Ulmer GmbH & Co., Stuttgart.
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