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  • E-mailTor.Tonsberg@uib.no
  • Phone+47 55 58 33 33
  • Visitor Address
    Realfagbygget, Allègt. 41
  • Postal Address
    Postboks 7800
    5007 BERGEN
Books
  • Øvstedal, Dag Olav; Tønsberg, Tor; Elvebakk, Arve. 2009. The lichen flora of Svalbard. Universitetet i Oslo. 393 pages. ISBN: 82-7420-047-0.
  • Holien, Håkon; Tønsberg, Tor. 2008. Norsk lavflora. Tapir Akademisk Forlag. 224 pages. ISBN: 9788251922500.
  • Holien, Håkon; Tønsberg, Tor. 2006. Norsk lavflora. Tapir Akademisk Forlag. 224 pages. ISBN: 8251919789.
  • Holien, Håkon; Tønsberg, Tor. 2006. Norsk lavflora. Tapir Akademisk Forlag. 224 pages. ISBN: 82-519-1978-9.
  • Santesson, Rolf; Moberg, Roland; Nordin, Anders; Tønsberg, Tor; Vitikainen, Orvo. 2004. Lichen-forming and lichenicolous fungi of Fennoscandia. 359 pages. ISBN: 91-972863-6-2.
  • Gaarder, Geir; Holien, Håkon; Håpnes, A.; Tønsberg, Tor. 1998. Boreal regnskog i Midt-Norge. DN-rapport 1997. 328 pages.
  • Krog, H.; Østhagen, H.; Tønsberg, Tor. 1994. Lavflora. Norske busk- og bladlav. 2. utg. 368 pages. ISBN: 82-00-41445-0.
Journal articles
  • Carlberg, Tom; Jørgensen, Per Magnus; Tønsberg, Tor. 2016. Scytinium singulare, a new lichen species from coastal California. North American Fungi. 11: 1-6. doi: 10.2509/naf2016.011.004
  • Cestaro, L.; Tønsberg, Tor; Muggia, L. 2016. Phylogenetic data and chemical traits characterize a new species in the lichen genus Tephromela. Herzogia. 29: 383-402.
  • Johnsen, J.I.; Tønsberg, Tor. 2016. Fjordkrinslav Hypotrachyna aff. taylorensis, en for Norge og Fennoskandia ny bladlav. Blyttia : Norsk botanisk forenings tidsskrift. 74: 252-255.
  • Lücking, R.; Tønsberg, Tor. 2016. Gyalideopsis pusilla (Gomphillaceae, lichenized Ascomycetes), a new species from southeastern North America. North American Fungi. 11: 1-4. doi: http://dx.doi.org/10.2509/naf2016.011.007
  • Olsen, Oddvar; Tønsberg, Tor. 2016. Thelocarpon superellum ny for Norge [Thelocarpon superellum new to Norway]. Blyttia : Norsk botanisk forenings tidsskrift. 74: 172-174.
  • Palice, Zdenek; Tønsberg, Tor. 2016. Porpidia nadvornikiana new to Norway. Graphis Scripta. 28: 36-39.
  • Printzen, Christian; Halda, J.P.; McCarthy, J.W.; Palice, Z.; Rodriguez-Flakus, P.; Thor, G.; Tønsberg, Tor; Vondrák, J. 2016. Five new species of Biatora from four continents. Herzogia. 29: 566-585.
  • Resl, Philipp; Mayrhofer, Helmut; Clayden, Stephen R.; Spribille, Toby; Thor, Göran; Tønsberg, Tor; Sheard, John W. 2016. Morphological, chemical and species delimitation analyses provide new taxonomic insights into two groups of Rinodina. The Lichenologist. 48: 469-488. doi: 10.1017/S0024282916000359
  • Tønsberg, Tor. 2016. Laven Fellhanera duplex ny for Norge og Fennoskandia. Blyttia : Norsk botanisk forenings tidsskrift. 74: 269-270.
  • Tønsberg, Tor. 2016. Jamesiella scotica new to North America from USA, Alaska. Folia Cryptogamica Estonica. 53: 23-24. doi: dx.doi.org/10.12697/fce.2016.53.03
  • Tønsberg, Tor; Blom, Hans H.; Goffinet, Bernard; Holtan-Hartwig, Jon; Lindblom, Louise. 2016. The cyanomorph of Ricasolia virens comb. nov. (Lobariaceae, lichenized Ascomycetes). Opuscula Philolichenum. 15: 12-21.
  • Tønsberg, Tor; Goward, Trevor. 2016. Cliostomum spribillei (Ramalinaceae, lichenized Ascomycetes), a new species from Western North America. North American Fungi. 11. doi: 10.2509/naf2016.011.005
  • Jordal, Bjarte Henry; Willassen, Endre; Hufthammer, Anne Karin; Tønsberg, Tor; Høyer, Jo. 2015. Klimaendringer – spor i museets samlinger. Årbok for Universitetsmuseet i Bergen. 96-101.
  • Kraichak, Ekaphan; Lücking, Robert; Aptroot, André; Beck, Andreas; Dornes, Patrick; John, Volker; Lendemer, James C.; Nelsen, Matthew P.; Neuwirth, Gerhard; Nutakki, Aparna; Parnmen, Sittiporn; Sohrabi, Mohammad; Tønsberg, Tor; Lumbsch, H. Thorsten. 2015. Hidden diversity in the morphologically variable script lichen (Graphis scripta) complex (Ascomycota, Ostropales, Graphidaceae). Organisms Diversity & Evolution. 15: 447-458. doi: 10.1007/s13127-015-0219-5
  • Nygaard, Endre; Tønsberg, Tor. 2015. Liten eikelav Flavoparmelia soredians funnet ny for Norge i Stavanger. Blyttia : Norsk botanisk forenings tidsskrift. 73: 161-166.
  • Tønsberg, Tor; Türk, Roman. 2015. Biatora aureolepra from Austria, new to Central Europe. Graphis Scripta. 27: 59-60.
  • Klepsland, Jon T.; Tønsberg, Tor. 2014. Schaereria corticola from the Canary Islands, new to Africa. Graphis Scripta. 26: 49-50.
  • Lendemer, James C.; Tønsberg, Tor. 2014. Lepraria brodoi (Stereocaulaceae, lichenized Ascomycetes), a new species from the temperate rainforests of western Canada and southeastern Alaska, U.S.A. Opuscula Philolichenum. 13: 20-25.
  • Sheard, John W.; McCune, Bruce; Tønsberg, Tor. 2014. A new corticolous species of Rinodina (Physciaceae) and two interesting range extensions for species collected from Katmai National Park, Alaska. The Bryologist. 117: 253-258. doi: 10.1639/0007-2745-117.3.253
  • Spribille, Toby; Resl, P.; Ahti, Teuvo; Perez-Ortega, Sergio; Tønsberg, Tor; Mayrhofer, H.; Lumbsch, Thorsten. 2014. Molecular systematics of the wood-inhabiting, lichen-forming genus Xylographa (Baeomycetales,Ostropomycetidae) with eight new species. Symbolae Botanicae Upsalienses. 37: 1-87.
  • Spribille, Toby; Tønsberg, Tor; Stabentheiner, Edith; Muggia, Lucia. 2014. Reassessing evolutionary relationships in the filamentous cyanolichen genus Spilonema (Peltigerales, Lecanoromycetes). The Lichenologist. 46: 373-388. doi: 10.1017/S0024282913000601
  • Hauck, M.; Tønsberg, Tor; Mayrhofer, H.; Bruyn, U. de; Enkhtuya, O.; Javkhlan, S. 2013. New records of lichen species from western Mongolia. Folia Cryptogamica Estonica. 50: 13-22.
  • Hauck, Markus; Tønsberg, Tor; Mayrhofer, Helmut; Breuss, Othmar. 2013. Lichen-forming and lichenicolous fungi new to Kazakhstan. Herzogia. 26: 103-116.
  • Hutten, M.; Arup, Ulf; Breuss, O.; Esslinger, T.L.; Fryday, A.M.; Knudsen, K.; Lendemer, J.C.; Printzen, C.; Root, H.T.; Schultz, M.; Sheard, J. W.; Tønsberg, Tor; McCune, B. 2013. Lichens and Lichenicolous Fungi of Yosemite National Park, California. North American Fungi. 8: 1-47. doi: 10.2509/naf2013.008.011
  • Palice, Zdeněk; Printzen, Christian; Spribille, Toby; Svensson, Måns; Tønsberg, Tor; Urbanavichene, Irina; Yakovchenko, Lidia S.; Ekman, Stefan. 2013. Taxonomy of the genus Myrionora, with a second species from South America. The Lichenologist. 45: 159-167. doi: 10.1017/S0024282912000692
  • Tønsberg, Tor. 2013. Xylographa soralifera (lichenized Ascomycetes) new to Switzerland. Meylania. 50: 15-16.
  • Dillman, Karen L.; Ahti, Teuvo; Björk, Curtis R.; Clerc, Philippe; Ekman, Stefan; Goward, Trevor; Hafellner, Josef; Perez-Ortega, Sergio; Printzen, Christian; Savic, Sanja; Schultz, Matthias; Svensson, Måns; Thor, Göran; Tønsberg, Tor; Vitikainen, Orvo; Westberg, Martin; Spribille, Toby. 2012. New records, range extensions and nomenclatural innovations for lichens and lichenicolous fungi from Alaska, USA. Herzogia. 25: 177-210.
  • Holien, Håkon; Tønsberg, Tor. 2012. Biatora kodiakensis confirmed from Europe. Graphis Scripta. 24: 49-52.
  • Holien, Håkon; Tønsberg, Tor. 2012. Ramboldia subcinnabarina revisited. Graphis Scripta. 24: 9-13.
  • Jørgensen, Per Magnus; Tønsberg, Tor. 2012. Lav – vekster med flere ansikter. Årbok for Universitetsmuseet i Bergen. 2012: 83-91.
  • Lendemer, James C.; Sheard, John W.; Thor, Göran; Tønsberg, Tor. 2012. Rinodina chrysidiata, a new species from far eastern Asia and the Appalachian Mountains of North America. The Lichenologist. 44: 179-187. doi: 10.1017/S0024282911000764
  • Sheard, John W.; Lendemer, James C.; Spribille, Toby; Thor, Göran; Tønsberg, Tor. 2012. Further contributions to the genus Rinodina (Physciaceae, Lecanoromycetidae): two species new to science and a new record for the Canadian High Arctic. Herzogia. 25: 125-143.
  • Timdal, Einar; Tønsberg, Tor. 2012. Cladonia straminea, the correct name for C. metacorallifera. Graphis Scripta. 24: 33-35.
  • Tønsberg, Tor; Nordin, Anders; Tibell, Leif. 2012. Amandinea lignicola, a new species from the Pacific coast of North America. Graphis Scripta. 24: 60-64.
  • Muggia, Lucia; Nelson, Peter; Wheeler, Tim; Yakovchenko, Lidia S.; Tønsberg, Tor; Spribille, Toby. 2011. Convergent evolution of a symbiotic duet: The case of the lichen genus Polychidium (Peltigerales, Ascomycota). American Journal of Botany. 98: 1647-1656. doi: 10.3732/ajb.1100046
  • Rodrigues, Sandrina Azevedo; Terrón-Alfonso, Arsenio; Elix, John A.; Pérez-Ortega, S; Tønsberg, Tor; Fernández-Salegui, Ana Belén; Soares, Amadeu M.V.M. 2011. Lecanora sorediomarginata, a new epiphytic lichen species discovered along the Portuguese coast. The Lichenologist. 43: 99-111. doi: 10.1017/S002428291000071X
  • Rodrigues, Sandrina Azevedo; Tønsberg, Tor; Terrón-Alfonso, Arsenio; Soares, Amadeu M.V.M. 2011. Chrysothrix flavovirens, Lepraria elobata, and Ochrolechia arborea new to Portugal. Mycotaxon. 115: 335-344. doi: 10.5248/115.335
  • Tønsberg, Tor. 2011. Pertusaria mccroryae new to Europe. Graphis Scripta. 23: 27-29.
  • Tønsberg, Tor; Johnsen, John I. 2011. Micarea viridileprosa new to Norway. Graphis Scripta. 23: 30-30.
  • Gaarder, Geir; Tønsberg, Tor. 2010. Buellia violaceofusca new to Norway. Graphis Scripta. 22: 31-31.
  • Giralt, Mireia; Van den Boom, Pieter P.G.; Tønsberg, Tor; Elix, John A. 2010. New data for Rinodina flavosoralifera. The Lichenologist. 42: 693-696. doi: 10.1017/S0024282910000381
  • Jørgensen, Per Magnus; Tønsberg, Tor. 2010. The lichen Bryoria bicolor found fertile in western Norway. Graphis Scripta. 22: 52-53.
  • Jørgensen, Per Magnus; Tønsberg, Tor. 2010. Leptogium insigne, a new species from the Pacific Northwest of North America. Bibliotheca Lichenologica. 104: 241-245.
  • Jørgensen, Per Magnus; Tønsberg, Tor; Glew, Katherine A. 2010. Fuscopannaria cheiroloba, a rarely collected lichen species. Graphis Scripta. 22: 1-2.
  • Sheard, John; Tønsberg, Tor; Johnsen, John Inge. 2010. Rinodina orculata and R. roboris new to Fennoscandia. Graphis Scripta. 22: 43-46.
  • Spribille, Toby; Perez-Ortega, Sergio; Tønsberg, Tor; Schirokauer, Dave. 2010. Lichens and lichenicolous fungi of the Klondike Gold Rush National Historic Park, Alaska, in a global biodiversity context. The Bryologist. 113: 439-515. doi: 10.1639/0007-2745-113.3.439
  • Spribille, Toby; Björk, Curtis R.; Ekman, Stefan; Elix, John A.; Goward, Trevor; Printzen, Christian; Tønsberg, Tor; Wheeler, Tim. 2009. Contributions to an epiphytic lichen flora of northwest North America: I. Eight new species from British Columbia inland rain forests. The Bryologist. 112: 109-137. doi: 10.1639/0007-2745-112.1.109
  • Tønsberg, Tor; Johnsen, John Inge. 2009. Micarea stipitata and Myochroidea leprosula new to Fennoscandia. Graphis Scripta. 21: 49-52.
  • Holien, Håkon; Tønsberg, Tor. 2008. Xylographa soralifera, a new species in the X. vitiligo complex. Graphis Scripta. 20: 58-63.
  • Holien, Håkon; Tønsberg, Tor. 2008. Xylographa soralifera : a new species in the X. vitiligo complex. Graphis Scripta. 20: 58-63.
  • Printzen, Christian; Spribille, Toby; Tønsberg, Tor. 2008. Myochroidea, a new genus of corticolous, crustose lichens to accommodate the Lecidea leprosula group. The Lichenologist. 40: 195-207. doi: 10.1017/S0024282908007639
  • Tønsberg, Tor. 2008. Review of: Hinds, J.W. & Hinds, P.L. 2008. The macrolichens of of New England. Memoirs of The New York Botanical Garden: 96: 1-608. Graphis Scripta. 29: 64-64.
  • Tønsberg, Tor. 2008. Review of: Galloway, D.J. 2007. Flora of New Zealand Lichens. Revised second edition. Manaaki Whenua Press. ISBN: 978-0-478-09376-6. Graphis Scripta. 20: 64-64.
  • Tønsberg, Tor; Johnsen, John Inge. 2008. Fuscidea lightfootii new to Fennoscandia. Graphis Scripta. 20: 31-32.
  • Guttová, Anna; Tønsberg, Tor; Lackovicová, Anna; Backor, Martin. 2007. The identity of Lecanora carpathica (Lecanoraceae) described from Slovakia. Mycotaxon. 101: 247-250.
  • McCune, Bruce; Tønsberg, Tor; Ahti, T. 2007. Hypogymnia incurvoides new to Scandinavia and the Appalachian Mountains. Graphis Scripta. 19: 10-12.
  • Printzen, Christian; Tønsberg, Tor. 2007. Bacidia lobarica (Bacidiaceae, Lecanorales) sp nov., a sorediate lichen from the southeastern USA. The Bryologist. 110: 487-489.
  • Spribille, T.; Tønsberg, Tor. 2007. Lepraria bergensis and L. obtusatica new to Germany. Herzogia. 20: 327-328.
  • Spribille, T.; Tønsberg, Tor. 2007. Mycoblastus marginatus, a new synonym for M. affinis (Mycoblastacea, Lichenized Ascomycota). Mycotaxon. 100: 105-107.
  • Tønsberg, Tor. 2007. Notes on the Lichen Genus Lepraria in Great Smoky Mountains National Park, southeastern North America: Lepraria lanata and L. salazinica spp. nov. Opuscula Philolichenum. 4: 51-53.
  • Andersen, Trond; Fossen, Haakon; Rio, Knut; Tønsberg, Tor. 2006. Publikasjonar Bergen Museum 2005. Vitenskaplege og populærvitskaplege artikklar. Årbok for Bergen Museum. 2005: 74-79.
  • Crespo, Ana; Arguello, Arturo; Lumbsch, H. Thorsten; Llimona, Xavier; Tønsberg, Tor. 2006. A new species of Lepraria (Lecanorales : Stereocaulaceae) from the Canary Islands and the typification of Lepravia isidiata. The Lichenologist. 38: 213-221. doi: 10.1017/S0024282906005846
  • Elix, John A.; Tønsberg, Tor. 2006. Notes on the chemistry of Scandinavian Lobaria species. Graphis Scripta. 18: 27-28.
  • Hopkins, Bjarke; Tønsberg, Tor. 2006. Notes on Botryolepraria lesdainii in North America. Evansia. 23: 34-35.
  • Timdal, Einar; Tønsberg, Tor. 2006. Psoroma paleaceum comb. nov. the only hairy Psoroma in northern Europe. Graphis Scripta. 18: 54-57.
  • Tønsberg, Tor. 2006. Notes on some lichens from the Great Smoky Mountains National Park, North Carolina/Tennessee, U.S.A. Evansia. 23: 61-63.
  • Tønsberg, Tor. 2006. Pertusaria flavocorallina new to Norway. Graphis Scripta. 18: 62-63.
  • Tønsberg, Tor; Williams, Cameron. 2006. Arthothelium norvegicum in North America. Evansia. 23: 80-81.
  • Tønsberg, Tor; Zhurbenko, Mikhail P. 2006. Lepraria gelida, a new species from the Arctic. Graphis Scripta. 18: 64-64.
  • Elix, J.A.; Tønsberg, Tor. 2005. On the chemistry of Ramalina thrausta. Graphis Scripta. 17: 35-36.
  • Jørgensen, Per Magnus; Tønsberg, Tor. 2005. Leioderma cherokeense (Pannariaceae, Lecanorales) sp. nov. from the Great Smoky Mountains, North Carolina, U.S.A. The Bryologist. 108: 412-414.
  • Printzen, Christian; Tønsberg, Tor; Ekman, Stefan. 2005. Jetsetter oder Säulenheilige. Natur und Museum. 1. 16-25.
  • Thor, G.; Tønsberg, Tor; Kashiwadani, H.; Moon, K.H. 2005. Lecidea roseotincta new to Asia. The Journal of Japanese Botany. 80: 303-305.
  • Tønsberg, Tor. 2005. Notes on the lichen flora of the Great Smoky Mountains National Park. Southeastern Biology. 52: 26-28.
  • Tønsberg, Tor; Johnsen, J.I.; Øvstedal, Dag Olav. 2005. Leptogium britannicum refound in Norway. Graphis Scripta. 17: 39-40.
  • Elix, J.A.; Tønsberg, Tor. 2004. Notes on the chemistry of some lichens, including four species of Lepraria. Graphis Scripta. 16: 43-45.
  • Elix, J.A.; Tønsberg, Tor; Wardlaw, J.H. 2004. The structure of friesiic acid. Graphis Scripta. 16: 43-45.
  • Ihlen, Per G.; Holien, Håkon; Tønsberg, Tor. 2004. Two new species of Dactylospora (Dactylosporaceae, Lecanorales), with a key to the known species in Scandinavia. The Bryologist. 107: 357-362.
  • Ihlen, Per Gerhard; Holien, Håkon; Tønsberg, Tor. 2004. Two new species of Dactylospora (Dactylosporaceae, Lecanorales), with a key to the known species in Scandinavia. The Bryologist. 107: 357-362.
  • Ihlen, Per Gerhard; Owe-Larsson, B.; Tønsberg, Tor. 2004. Arthonia biatoricola sp. nov. from north-western Europe and northern Pacific North America. Symbolae Botanicae Upsalienses. 34: 107-111.
  • Printzen, Christian; Tønsberg, Tor. 2004. New and interesting Biatora-species, mainly from North America. Symbolae Botanicae Upsalienses. 34: 343-357.
  • Tønsberg, Tor. 2004. Additions to the lichen flora of Great Smoky Mountains National Park. All Taxa Biodiversity Inventory. 5: 6-6.
  • Ekman, Stefan; Tønsberg, Tor. 2003. Lepraria + Stereocaulon = sant. Lavbulletinen. 2003: 12-16.
  • Printzen, Christian; Ekman, Stefan; Tønsberg, Tor. 2003. Phylogeography of Cavernularia hultenii: Evidence for slow genetic drift in a widely disjunct lichen. Molecular Ecology. 12: 1473-1486.
  • Tønsberg, Tor; Ekman, Stefan. 2003. Lepraria bergensis, en ny lav for vitenskapen fra Bergen. Glimt fra Lepraria-forskningen ved UiB. Årsbok for Bergen Museum. 8: 41-43.
  • Ekman, Stefan; Tønsberg, Tor. 2002. Most species of Lepraria and Leproloma form a monophyletic group closely related to Stereocaulon. Mycological Research. 106: 1262-1276.
  • Giralt, Mireia; Tønsberg, Tor; Holien, Håkon. 2002. Notes on the misunderstood Buellia dives (Th. Fr.) Th. Fr. The Lichenologist. Vol. 34: s.1-5.
  • Giralt, Mireia; Tønsberg, Tor; Holien, Håkon. 2002. Notes on the misunderstood Buellia dives (Th. Fr.) Th. Fr. The Lichenologist. Vol. 34: 1-5.
  • Holien, Håkon; Tønsberg, Tor. 2002. Two new species in the lichen genus Szczawinskia A. Funk. The Lichenologist. 369-372.
  • Jørgensen, Per Magnus; Printzen, Christian; Tønsberg, Tor. 2002. Biatora amaurospoda Anzi, a superfluous name for Lecidea pullata (Norman) Th. Fr. Graphis Scripta. 13: 25-27.
  • Fahselt, Dianne; Krol, Marianna; Hüner, Norm; Tønsberg, Tor. 2000. Pigmentation of Cladonia infected by the lichenicolous fungus Arthrorhaphis aeruginosa. The Lichenologist. 32: 300-303.
  • Fahselt, Dianne; Krol, Marianna; Hüner, Norm; Tønsberg, Tor. 2000. Pigmentation of Cladonia infected by the lichenicolous fungus Arthrorhaphis aeruginosa. The Lichenologist. 32: 300-303.
  • Henssen, Aino; Tønsberg, Tor. 2000. Spilonemella, a new genus of cyanophilic lichens with species from North America and Japan (Coccocarpiaceae). The Bryologist. 103: 108-116.
  • Elix, John A.; Tønsberg, Tor. 1999. Notes on the chemistry of some lichens from Norway. Graphis Scripta. 10: 4-6.
  • Jørgensen, Per Magnus; Tønsberg, Tor. 1999. Notes on small Leptogium species from Pacific North America. The Bryologist. 102: 412-417.
  • Jørgensen, Per Magnus; Tønsberg, Tor. 1999. Notes on small species of Leptogium from Pacific North America. The Bryologist. 102: 412-417.
  • Printzen, Christian; Tønsberg, Tor. 1999. The lichen genus Biatora in northwestern North America. The Bryologist. 102: 692-713.
  • Rosso, Abbey L.; McCune, Bruce; Tønsberg, Tor; Printzen, Christian. 1999. Lichens of an Old-Growth Forest in a Little Explored Area of Western Oregon, U.S.A. Evansia. 16: 137-142.
  • Tønsberg, Tor. 1999. Pseudocyphellaria arvidssonii new to Africa, and P. mallota new to North America. The Bryologist. 102: 128-129.
  • Tønsberg, Tor. 1999. Additions to the lichen flora of North America VII. Soem species found on Waadah Island, Washington. The Bryologist. 102: 133-134.
  • Tønsberg, Tor; Henssen, Aino. 1999. Additions to the lichen flora of North America VIII. Santessoniella grisea new to North America. Evansia. 16: 184.
  • McCarthy, P.M.; Tønsberg, Tor. 1998. Porina radicicola, a new lichen from western North America. The Lichenologist. 30. 245-248.
  • Tønsberg, Tor. 1998. Additions to the lichen flora of Norway and Sweden. Graphis Scripta. 9. 27-31.
  • Tønsberg, Tor. 1998. Additions to the lichen flora of North America VI. The Bryologist. [1997]:100: 522-524.
  • Bjelland, Torbjørg; Halleraker, Grete; Tønsberg, Tor. 1997. The chemotypes of Cetrelia olivetorum in Norway. Graphis Scripta. 8: 5-7.
  • Søchting, Ulrik; Tønsberg, Tor. 1997. Caloplaca xanthostigmoidea (R@æs.) Zahlbr., a common lichen in cool regions of the Northern Hemisphere. Symbolae Botanicae Upsalienses. 32: 247-253.
  • Tønsberg, Tor; Jørgensen, Per Magnus. 1997. On the alleged apothecia of Leproloma. The Lichenologist. 29: 597-599.
  • Ekman, Stefan; Tønsberg, Tor. 1996. A new species of Megalaria from the North American west coast, and notes on the generic circumscription. The Bryologist. 99. 34-40.
  • Ekman, Stefan; Tønsberg, Tor. 1996. A new species of Megalaria from the Norht American West Coast, and Notes on the Generic Circumscription. The Bryologist. 99: 34-40.
  • Holien, Håkon; Tønsberg, Tor. 1996. Boreal regnskog i Norge - habitatet for trøndelagselementets lavarter. Blyttia : Norsk botanisk forenings tidsskrift. 54: 157-177.
  • Holien, Håkon; Tønsberg, Tor. 1996. Boreal regnskog i Norge - habitatet for trøndelagselementets lavarter. Blyttia : Norsk botanisk forenings tidsskrift. 54. 157-177.
  • Ihlen, Per Gerhard; Tønsberg, Tor. 1996. The lichenicolous genus Lettauia in North America. The Bryologist. 0099: 32-33.
  • Ihlen, Per Gerhard; Tønsberg, Tor. 1996. The lichenicolous genus Lettauia in North America. The Bryologist. 99. 32-33.
  • Tønsberg, Tor; Gauslaa, Yngvar; Haugan, Reidar; Holien, Håkon; Timdal, Einar. 1996. The threatened macrolichens of Norway - 1995. Sommerfeltia. 23: 1-258.
  • Sheard, J. W.; Tønsberg, Tor. 1995. Rinodina stictica, a new corticolous, sorediate lichen species from the Pacific northwest of North America. The Bryologist. 98: 41-44.
  • Tønsberg, Tor. 1995. Additions to the lichen flora of North America IV. Scoliciosporum sarothamni. Evansia. 12: 27-30.
  • Tønsberg, Tor. 1995. Cladonia incrassata new to Norway and the problem of C. anitae in Europe. Graphis Scripta. 7: 61-65.
  • Tønsberg, Tor. 1995. Additions to the lichen flora of North America V. Arthonia stellaris. Evansia. 12: 66-67.
  • Tønsberg, Tor; Culberson, C. F.; Johnson, A. 1995. 4-O-Methylcryptochlorophaeic acid found in Bacidia. Graphis Scripta. 7: 39-41.
  • Tønsberg, Tor; Øvstedal, Dag Olav. 1995. Cladonia peziziformis new to Norway from a burnt Calluna heath. Graphis Scripta. 7: 11-12.
  • Brodo, I. M.; Tønsberg, Tor. 1994. A new species of Micarea with stalked pycnidia from the west coast of North America. Acta Botanica Fennica. 150: 1-4.
  • Holien, H.; Jørgensen, Per Magnus; Timdal, E.; Tønsberg, Tor. 1994. Norske lavanavn, supplement. Blyttia : Norsk botanisk forenings tidsskrift. 52: 25-28.
  • Holien, H.; Tønsberg, Tor. 1994. The 10th meeting of the Nordic Lichen Society in Nord-Trøndelag, Norway, 1993. Graphis Scripta. 6: 67-75.
  • Ihlen, Per Gerhard; Tønsberg, Tor. 1994. The distribution of Cladonia borealis Stenroos in Norway. Graphis Scripta. 6: 27-29.
  • Santesson, R.; Tønsberg, Tor. 1994. Arthrorhaphis aeruginosa and A. olivaceae, two new lichenicolous fungi. The Lichenologist. 26: 295-299.
  • Tønsberg, Tor. 1994. Chrysothrix flavovirens sp. nov. - the sorediate counterpart of C. chrysophthalma. Graphis Scripta. 6: 31-33.
  • Tønsberg, Tor. 1994. The lichen genus Solenopsora and the species S. vulturiensis new to Scandinavia. Graphis Scripta. 6: 15-16.
  • Tønsberg, Tor. 1994. Leptogium cochleatum and Rinodina isidioides new to Scandinavia. Graphis Scripta. 6: 85-88.
  • Tønsberg, Tor. 1994. Additions to the lichen flora of North America III. Halecania viridescens and Opegrapha sorediifera. Evansia. 11: 100-101.
  • Tønsberg, Tor. 1993. Additions to the lichen flora of North America. The Bryologist. 96: 629-630.
  • Tønsberg, Tor. 1993. Collema leptaleum new to Europe. Graphis Scripta. 5: 22-23.
  • Tønsberg, Tor. 1993. Additions to the lichen flora of North America. The Bryologist. 96: 138-141.
  • Tønsberg, Tor; Elvebakk, A. 1993. Cetraria inermis new to Europe. Graphis Scripta. 5: 73-74.
  • Elvebakk, A.; Tønsberg, Tor. 1992. Additions to the lichen flora of Svalbard. Graphis Scripta. 3: 140-147.
  • Gauslaa, Yngvar; Anonby, J.; Gaarder, G.; Tønsberg, Tor. 1992. Huldrestry, Usnea longissima, en sjelden urskogslav på Vestlandet. Blyttia : Norsk botanisk forenings tidsskrift. 50: 105-114.
  • Tønsberg, Tor. 1992. Rinodina sheardii, a new lichen species from northwest Europe and northwest North America. The Bryologist. 95: 216-217.
  • Tønsberg, Tor. 1992. Fellhanera new to Norway. Graphis Scripta. 3. 118-119.
  • Tønsberg, Tor. 1992. The sorediate and isidiate, corticolous, crustose lichens in Norway. Sommerfeltia. 14: 1-331.
  • Tønsberg, Tor. 1992. Fellhanera new to Norway. Graphis Scripta. 3: 118-119.
  • Tønsberg, Tor. 1992. (Bokanmeldelse av:) H. K@ymmerling, Zur Kenntnis der Flechtenflora am Hohen Mei@sner und in seinen Vorland (Hessen) unter besonderer Berucksichtigung chemischer Merkmale. (Bibliotheca Lichenologica 41). The Lichenologist. 24: 201.
  • Tønsberg, Tor; Brodo, I. M. 1992. Enterographa zonata and Opegrapha gyrocarpa, new to North America. The Bryologist. 95: 225-226.
  • Tønsberg, Tor; Goward, T. 1992. Cladonia norvegica new to North America. Evansia. 9: 56-58.
Reports and theses
  • Wiig, Øystein; Bakken, Vidar; Ebeling, Jarle; Djursvoll, Per; Frafjord, Karl; Hårsaker, Karstein; Innselset, Sonja M.; Johansen, Torkel; Prestø, Tommy; Timdal, Einar; Tønsberg, Tor; Uleberg, Espen. 2009. Evaluering av samlingsforvaltningssystemet KE EMu for bruk ved universitetsmuseene i Norge. Rapport til styret. Musit - universitetsmuseenes IT-organisasjon, Oslo. 50 pages.
  • Tønsberg, Tor. 1999. Lichenes isidiosi et sorediosi crustacei exsiccati. Schedae to Fasc. 2 (nos 26-50). Dept. of Botany, University of Bergen, Bergen. 10 pages.
  • Håpnes, Arnodd; Tønsberg, Tor; Holien, Håkon; Gaarder, Geir. 1997. Boreal regnskog i Midt-Norge : registreringer. 2. Direktoratet for naturforvaltning. 328 pages.
  • Tønsberg, Tor. 1997. Lichenes isidiosi et sorediosi crustacei exsiccati. Schedae to Fasc. 1 (nos 1-25). Dept. of Botany/Herbarium BG, University of Bergen, Bergen. 10 pages.
  • Jørgensen, Per Magnus; Tønsberg, Tor. 1992. Truete busk og bladlav i Norge. Rapport til Direktoratet for Naturvern. [Mangler utgivernavn]. 9 pages.
  • Tønsberg, Tor. 1992. The sorediate and isidiate, corticolous, crustose lichens in Norway. University of Oslo, The Botanical Garden and Museum, Oslo. 1 pages.
Book sections
  • Tønsberg, Tor. 2013. Møteplass for vestlige og østlige lavarter. Delkapittel, pages 138-138. In:
    • Nord, S.; Solhøy, T.; Helland-Hansen, W. 2013. Ei halvøy i Hardanger. Natur- og kulturforteljingar frå Neshalvøya. 150 pages. ISBN: 9788273261045.
  • Tønsberg, Tor. 2013. Lav i overhengene. Delkapittel, pages 51-51. In:
    • Nord, S.; Solhøy, T.; Helland-Hansen, W. 2013. Ei halvøy i Hardanger. Natur- og kulturforteljingar frå Neshalvøya. 150 pages. ISBN: 9788273261045.
  • Holien, Håkon; Tønsberg, Tor. 2011. Lavfloraen i Midt-Norges unike regnskoger. Kapittel, pages 163-167. In:
    • Hågvar, Sigmund; Berntsen, Bredo. 2011. Norsk urskog og gammelskog. Unipub forlag. ISBN: 978-82-7477-471-1.
  • Timdal, Einar; Bratli, Harald; Haugan, Reidar; Holien, Håkon; Tønsberg, Tor. 2010. Lav "Lichenes". kapitel, pages 125-137. In:
    • Kålås, John Atle; Viken, Åslaug; Henriksen, Snorre; Skjelseth, Sigrun. 2010. Norsk rødliste for arter 2010. The 2010 Norwegian Red List for Species. 480 pages. ISBN: 978-82-92838-26-6.
  • Timdal, Einar; Bratli, Harald; Haugan, Reidar; Holien, Håkon; Tønsberg, Tor. 2010. Lav Lichenes. faglig_bok_forlag, pages 125-137. In:
    • Kålås, John Atle; Viken, Åslaug; Henriksen, Snorre; Skjelseth, Sigrun. 2010. Norsk rødliste for arter 2010. The 2010 Norwegian Red List for Species. 480 pages. ISBN: 978-82-92838-26-6.
  • Gilbert, O.L.; Purvis, O.W.; Skjolddal [Skjoldahl], L.H.; Tønsberg, Tor. 2009. Fuscidea V. Wirth & Vězda (1972). Fuscidea V. Wirth & Vězda (1972)., pages 407-411. In:
    • Smith, C.W. 2009. The lichens of Great Britain and Ireland. 1046 pages. ISBN: 9780954041885.
  • Purvis, O.W.; Skjolddal [Skjoldahl], L.H.; Tønsberg, Tor. 2009. Ropalospora A. Massal. (1860). Ropalospora A. Massal. (1860), pages 827-828. In:
    • Smith, C.W. 2009. The lichens of Great Britain and Ireland. 1046 pages. ISBN: 9780954041885.
  • Tønsberg, Tor. 2008. Psilolechia. Additional lichen species in genera previously treated, pages 278-279. In:
    • Nash III, Thomas H; Gries, Corinna; Bungartz, Frank. 2008. Lichen Flora of the Greater Sonoran Desert Region. 567 pages. ISBN: 0-9716759-1-0.
  • Tønsberg, Tor. 2008. Botryolepraria. Taxonomic treatment by genus, pages 112-113. In:
    • Nash III, Thomas H; Gries, Corinna; Bungartz, Frank. 2008. Lichen Flora of the Greater Sonoran Desert Region. 567 pages. ISBN: 0-9716759-1-0.
  • Jørgensen, Per Magnus; Tønsberg, Tor. 2007. Sticta. Kapittel, pages 84-86. In:
    • Ahti, T.; Jørgensen, Per Magnus; Kristinsson, H.; Moberg, Roland; Søchting, U.; Thor, G. 2007. Nordic Lichen Flora Vol. 3. 219 pages. ISBN: 978-91-85221-14-1.
  • Jørgensen, Per Magnus; Tønsberg, Tor. 2007. Pseudocyphellaria. Kapittel, pages 82-84. In:
    • Ahti, T.; Jørgensen, Per Magnus; Kristinsson, H.; Moberg, Roland; Søchting, U.; Thor, G. 2007. Nordic Lichen Flora Vol. 3. 219 pages. ISBN: 978-91-85221-14-1.
  • Jørgensen, Per Magnus; Tønsberg, Tor. 2007. Lobariacea. Lobariacea, pages 77-77. In:
    • Ahti, T.; Jørgensen, Per Magnus; Kristinsson, H.; Moberg, Roland; Søchting, U.; Thor, G. 2007. Nordic Lichen Flora Vol. 3. 219 pages. ISBN: 978-91-85221-14-1.
  • Tønsberg, Tor; Jørgensen, Per Magnus. 2007. Lobaria. Kapittel, pages 77-82. In:
    • Ahti, T.; Jørgensen, Per Magnus; Kristinsson, H.; Moberg, Roland; Søchting, U.; Thor, G. 2007. Nordic Lichen Flora Vol. 3. 219 pages. ISBN: 978-91-85221-14-1.
  • Holien, Håkon; Timdal, Einar; Bratli, Harald; Tønsberg, Tor; Haugan, Reidar. 2006. Lav Lichenes. faglig_bok_forlag, pages 129-139. In:
    • 2006. Norsk rødliste 2006 = 2006 Norwegian Red List. 11 pages.
  • Timdal, E.; Bratlie, H.; Haugan, R.; Holien, H.; Tønsberg, Tor. 2006. Lav. Kapittel, pages 129-139. In:
    • Kålås, John Atle; Viken, Åslaug; Bakken, Torkild. 2006. Norsk Rødliste 2006 - 2006 Norwegian Red List. 416 pages. ISBN: 82-92838-00-7.
  • Tønsberg, Tor. 2005. Havaas som lichenolog i nasjonal og internasjonal sammenheng. Fagdel, pages 64-72. In:
    • Kjerland, Sevrin; Haugse, Hans S. 2005. Johan Havaas, fjellbonde og vitskapsmann. 206 pages. ISBN: 82-303-0396-7.
  • Ekman, Stefan; Tønsberg, Tor. 2004. Scoliciosporum. Lichen flora of the Greater Sonoran Desert Region, pages 504-505. In:
    • Nash III, T.H.; Ryan, B.D.; Diederich, P.; Gries, C.; Bungartz, F. 2004. Lichen flora of the Greater Sonoran Desert Region. 766 pages. ISBN: 0-9716759-1-0.
  • Nash III, T.H.; Tønsberg, Tor. 2004. Gyalideopsis. Lichen flora of the Greater Sonoran Desert Region, pages 126-127. In:
    • Nash III, T.H.; Ryan, B.D.; Diederich, P.; Gries, C.; Bungartz, F. 2004. Lichen flora of the Greater Sonoran Desert Region. 766 pages. ISBN: 0-9716759-1-0.
  • Printzen, Christian; Tønsberg, Tor. 2004. Japewia. Lichen flora of the Greater Sonoran Desert Region, pages 137-138. In:
    • Nash III, T.H.; Ryan, B.D.; Diederich, P.; Gries, C.; Bungartz, F. 2004. Lichen flora of the Greater Sonoran Desert Region. 766 pages. ISBN: 0-9716759-1-0.
  • Ryan, B.D.; Tønsberg, Tor; Nash III, T.H.; Hafellner, J. 2004. Pyrrhospora. Lichen flora of the Greater Sonoran Desert Region, pages 436-439. In:
    • Nash III, T.H.; Ryan, B.D.; Diederich, P.; Gries, C.; Bungartz, F. 2004. Lichen flora of the Greater Sonoran Desert Region. 766 pages. ISBN: 0-9716759-1-0.
  • Tønsberg, Tor. 2004. Phlyctis. Lichen flora of the Greater Sonoran Desert Region, pages 415-416. In:
    • Nash III, T.H.; Ryan, B.D.; Diederich, P.; Gries, C.; Bungartz, F. 2004. Lichen flora of the Greater Sonoran Desert Region. 766 pages. ISBN: 0-9716759-1-0.
  • Tønsberg, Tor. 2004. Chrysothrix. Lichen flora of the Greater Sonoran Desert Region, pages 62-63. In:
    • Nash III, T.H.; Ryan, B.D.; Diederich, P.; Gries, C.; Bungartz, F. 2004. Lichen flora of the Greater Sonoran Desert Region. 766 pages. ISBN: 0-9716759-1-0.
  • Tønsberg, Tor. 2004. Normandina. Lichen flora of the Greater Sonoran Desert Region, pages 380-381. In:
    • Nash III, T.H.; Ryan, B.D.; Diederich, P.; Gries, C.; Bungartz, F. 2004. Lichen flora of the Greater Sonoran Desert Region. 766 pages. ISBN: 0-9716759-1-0.
  • Tønsberg, Tor. 2004. Lepraria. Lichen flora of the Greater Sonoran Desert Region, pages 322-329. In:
    • Nash III, T.H.; Ryan, B.D.; Diederich, P.; Gries, C.; Bungartz, F. 2004. Lichen flora of the Greater Sonoran Desert Region. 766 pages. ISBN: 0-9716759-1-0.
  • Purvis, O. W.; Skjolddal, L. H.; Tønsberg, Tor. 1992. Fuscidea. V. Wirth & V#vezda (1972). 251-256. In:
    • [Mangler etternavn], [Mangler fornavn]. 1992. The lichen flora of Great Britain and Ireland. (O. W. Purvis, B. J. Coppins, D. L. Hawksworth, P. W. James, D. M.Moore, eds.).

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