Checklist of lichens of Greenland (Denmark)
Version 31 December 2018
- Absconditella trivialis (Willey ex Tuck.) Vezda - Alstrup et al. (2009: 5)
- Acarospora badiofusca (Nyl.) Th. Fr. - Thomson (1997: 21), Alstrup et al. (2009: 5)
- Acarospora brunneola Norman ex H. Magn. - Alstrup (1987: 52), Hansen (2004: 1), Alstrup et al. (2009: 5)
- Acarospora complanata H. Magn. - Alstrup et al. (2009: 5)
- Acarospora discreta (Ach.) Arnold - Alstrup et al. (2000: 4), Hansen (2004: 1)
- Acarospora durietzii H. Magn. - Magnusson (1935: 226)
- Acarospora friesii H. Magn. - Magnusson (1935: 228 Protologue) Type
- Acarospora fuscata (Nyl.) Arnold - Thomson (1997: 24), Alstrup et al. (2009: 5)
- Acarospora glaucocarpa (Wahlenb.) Körb. - Hansen (1978: 57), Hansen (1978b: 13), Thomson (1997: 25), Alstrup et al. (2009: 5)
- Acarospora groenlandica H. Magn. - Magnusson (1929: 163 Protologue), Magnusson (1935: 224) Type
- Acarospora hospitans H. Magn. - Alstrup et al. (2000: 4), Thomson (1997: 26)
- Acarospora impressula Th. Fr. - Alstrup et al. (2000: 4)
- Acarospora moenium (Vain.) Räsänen - Alstrup et al. (2009: 5)
- Acarospora molybdina (Wahlenb.) A. Massal. - Hansen (1978: 9), Hansen (1978b: 13), Thomson (1997: 28), Alstrup et al. (2000: 4), Hansen (2002: 6), Hansen (2004: 15), Hansen (2005: 39), Hansen (2006: 35), Alstrup et al. (2009: 5)
- Acarospora nitida H. Magn. - Magnusson (1935: 239 Protologue), Hansen (2004: 1), Alstrup et al. (2009: 5) Type
- Acarospora nitrophila H. Magn. - Alstrup et al. (2000: 4)
- Acarospora peliocypha Th. Fr. - Hansen (1978: 9), Thomson (1997: 29), Hansen (2005: 39), Alstrup et al. (2009: 5)
- Acarospora persimilis H. Magn. - Magnusson (1935: 227 Protologue) Type
- Acarospora picea H. Magn. - Alstrup et al. (2000: 5)
- Acarospora pyrenopsoides H. Magn. - Magnusson (1926: 74 Protologue), Magnusson (1929: 156), Magnusson (1935: 224), Thomson (1997: 30), Hansen (2004: 84), Alstrup et al. (2009: 5) Type
- Acarospora rhizobola (Nyl.) Alstrup - Alstrup et al. (2000: 5), Hansen (2002: 107), Hansen (2005: 39), Alstrup et al. (2009: 5)
- Acarospora rugulosa Körb. - Thomson (1997: 31), Hansen (2004: 1)
- Acarospora schleicheri (Ach.) A. Massal. - Magnusson (1929: xx), Magnusson (1935: 221), Hansen (1986: 174), Thomson (1997: 33), Alstrup et al. (2000: 5), Hansen (2002: 107)
- Acarospora sinopica (Wahlenb. in Ach.) Körb. - Magnusson (1935: 223), Hansen (1986: 174), Hafellner & Casares-Porcel (1992: 312), Thomson (1997: 33), Hansen (2002: 6), Hansen (2002: 107), Hansen (2008: 398), Alstrup et al. (2009: 5)
- Acarospora tuberculata H. Magn. - Magnusson (1935: 225 Protologue) Type
- Acarospora veronensis A. Massal. - Magnusson (1935: 226), Thomson (1997: 35), Alstrup et al. (2000: 5), Hansen (2005: 39), Alstrup et al. (2009: 5)
- Acarospora verruciformis H. Magn. - Magnusson (1935: 224)
- Acarospora wahlenbergii H. Magn. - Alstrup et al. (2009: 5)
- Adelolecia kolaensis (Nyl.) Hertel & Rambold - Alstrup et al. (2000: 5)
- Adelolecia pilati (Hepp.) Hertel & Hafellner - Thomson (1997: 37), Alstrup et al. (2000: 5), Hansen (2002: 107)
- Agonimia gelatinosa (Ach.) Brand & Diederich - Alstrup et al. (2009: 5)
- Alectoria nigricans (Ach.) Nyl. - Hansen (1978: 9), Hansen (1978b: 13), Hansen (1978: 57), Alstrup (1982: 68), Hansen (1983: 177), Thomson (1984: 35), Alstrup et al. (2000: 5), Hansen (2002: 6), Hansen (2002: 107), Hansen (2005: 39), Hansen (2006: 35), Hansen (2008: 295), Hansen (2008: 400), Alstrup et al. (2009: 5)
- Alectoria ochroleuca (Hoffm.) A. Massal. - Hansen (1978: 9), Hansen (1978b: 13), Hansen (1978: 57), Alstrup (1982: 68), Hansen (1983: 177), Thomson (1984: 37), Alstrup et al. (2000: 5), Hansen (2002: 107), Hansen (2005: 39), Hansen (2006: 36), Hansen (2008: 26), Alstrup et al. (2009: 5)
- Alectoria vexillifera (Nyl.) Stizenb. - Thomson (1984: 38), Hansen (2006: 36 as Alectoria sarmentosa subsp. vexillifera), Alstrup et al. (2009: 5 as Alectoria sarmentosa subsp. vexillifera)
- Allantoparmelia almquistii (Vain.) Essl. - Thomson (1984: 297 as Parmelia almquistii)
- Allantoparmelia alpicola (Th. Fr.) Essl. - Hansen (1978b: 15 as Parmelia alpicola), Hansen (1978: 57 as Parmelia alpicola), Alstrup (1982: 68), Hansen (1983: 177), Thomson (1984: 299 as Parmelia alpicola), Hansen (2002: 6), Hansen (2004: 15), Hansen (2005: 39), Hansen (2006: 36), Hansen (2008: 400), Alstrup et al. (2009: 5)
- Amandinea cacuminum (Th. Fr.) H. Mayrhofer & Sheard - Hansen (2002: 6)
- Amandinea coniops (Wahlenb.) M. Choisy ex Scheid. & H. Mayrhofer - Thomson (1997: 128 as Buellia coniops), Hansen (2005: 39)
- Amandinea punctata (Hoffm.) Coppins & Scheid. - Alstrup (1977: 115 as Buellia punctata), Alstrup (1982: 69), Daniels et al. (1985: 52 as Buellia punctata), Thomson (1997: 138 as Buellia punctata), Thomson (1997: 140 as Buellia stigmatea), Alstrup et al. (2000: 6 as Buellia punctata), Alstrup et al. (2000: 6 as Buellia stigmatea), Hansen (2002: 109 as Buellia punctata), Hansen (2008: 400)
- Amundsenia approximata (Lynge) Søchting, Arup & Frödén - Hansen, Poelt & Søchting (1987: 18 as Caloplaca approximata), Alstrup et al. (2000: 6 as Caloplaca approximata)
- Amygdalaria consentiens (Nyl.) Hertel, Brodo & Mas. Inoue - Thomson (1997: 39), Alstrup et al. (2009: 5)
- Amygdalaria elegantior (H. Magn.) Hertel & Brodo - Thomson (1997: 41), Alstrup et al. (2009: 5)
- Amygdalaria panaeola (Ach.) Hertel & Brodo - Thomson (1997: 42), Hansen (2006: 36), Alstrup et al. (2009: 5)
- Amygdalaria pelobotryon (Wahlenb. in Ach.) Norman - Thomson (1997: 43), Alstrup et al. (2009: 5)
- Anema nummularium (Dufour ex Dufour & Mont.) Nyl. - Alstrup et al. (2009: 5)
- Arctocetraria andrejevii (Oxner) Kärnefelt & A. Thell - Hansen (1978: 9 as Cetraria andrejevii), Hansen (1978: 9 as Cetraria simmonsii), Thomson (1984: 72 as Cetraria andrejevii), Hansen (1986: 176 as Cetraria andrejevii), Hansen (2006: 36), Alstrup et al. (2009: 5)
- Arctocetraria nigricascens (Nyl.) Kärnefelt & A. Thell - Hansen (1981: 97 as Cetraria nigricascens First record), Hansen (1984: 301 as Cetraria nigricascens), Hansen (2002: 108), Hansen (2005: 39), Hansen (2006: 36)
- Arctomia delicatula Th. Fr. - Thomson (1984: 42), Poelt (1985: 94), Alstrup et al. (2009: 5)
- Arctomia interfixa (Nyl.) Vain. - Hansen (1983: 483)
- Arctoparmelia centrifuga (L.) Hale - Hansen (1978: 11 as Parmelia centrifuga), Thomson (1984: 476 as Xanthoparmelia centrifuga), Hansen (2006: 36), Hansen (2008: 295), Alstrup et al. (2009: 5)
- Arctoparmelia incurva (Pers.) Hale - Hansen (1978: 11 as Parmelia incurva), Hansen (1983: 178), Thomson (1984: 478 as Xanthoparmelia incurva), Hansen (2002: 108), Hansen (2005: 39), Hansen (2006: 36), Alstrup et al. (2009: 5)
- Arctoparmelia separata (Th. Fr.) Hale - Hansen (2002: 108), Hansen (2006: 36), Hansen (2008: 400)
- Arthonia lapidicola (Taylor) Branth & Rostr. - Thomson (1997: 46), Alstrup et al. (2000: 5)
- Arthonia mediella Nyl. - Thomson (1997: 47)
- Arthonia patellulata Nyl. - Alstrup (1982: 68), Thomson (1997: 47)
- Arthopyrenia cembrina (Anzi) Grummann ex D. Hawksw. - Alstrup (1982: 68)
- Arthopyrenia kentrospora Branth - Branth (1892: 511 Protologue), Alstrup (1982: 68), Thomson (1997: 48) Type
- Arthopyrenia punctiformis (Pers.) A. Massal. - Brandt & Grønlund (1887: xx as Arthopyrenia analepta), Alstrup (1982: 69), Thomson (1997: 48), Hansen (2003: 150)
- Arthrorhaphis alpina (Schaer.) R. Sant. - Thomson (1997: 50), Alstrup et al. (2000: 5), Hansen (2002: 7), Hansen (2002: 108), Hansen (2005: 39), Hansen (2006: 36), Hansen (2008: 296), Hansen (2008: 400)
- Arthrorhaphis citrinella (Ach.) Poelt - Hansen (1978: 9), Hansen (1978b: 13), Hansen (1978: 57), Hansen (2002: 7), Hansen (2005: 39), Hansen (2006: 36), Hansen (2008: 400)
- Arthrorhaphis vacillans Th. Fr. & Almq. ex Th. Fr. - Thomson (1997: 51)
- Aspicilia alboradiata (H. Magn.) Oxner - Thomson (1997: 57)
- Aspicilia aliena (Zahlbr.) Oxner - Thomson (1997: 58), Hansen (2003: 150)
- Aspicilia annulata (Lynge) J. W. Thomson - Lynge (1937: 3 as Lecanora annulata Protologue), Thomson (1997: 60), Alstrup et al. (2000: 5) Type
- Aspicilia anseris (Lynge) J. W. Thomson - Thomson (1997: 61)
- Aspicilia aquatica (Fr.) Körb. - Hansen (1983: 484), Thomson (1997: 62), Hansen (2002: 7), Hansen (2002: 108)
- Aspicilia arctica (Lynge) Oxner - Lynge (xx: xx as xx Protologue), Oxner (xx: xx), Thomson (1997: 64) Type
- Aspicilia berntii A. Nordin, Tibell & Owe-Larss. - Thomson (1997: 80 as Aspicilia mastoidea nom. xx Protologue ??), Alstrup et al. (2000: 5 as Aspicilia mastoidea nom. xx), Hansen (2002: 7 as Aspicilia mastoidea nom. xx), Nordin, Tibell & Owe-Larss. (xx: xx New Name) Type
- Aspicilia candida (Anzi) Hue - Thomson (1997: 67), Hansen (2002: 108), Hansen (2006: 36)
- Aspicilia cinerea (L.) Körb. - Hansen (1978: 10 as Lecanora cinerea), Hansen (1978b: 14 as Lecanora cinerea), Thomson (1997: 68), Hansen (2002: 108)
- Aspicilia cingulata (Zahlbr.) Oxner - Thomson (1997: 70)
- Aspicilia composita (Lynge) J. W. Thomson - Lynge (1941: 84 Protologue Nom. illegit., Art. 53.1), Thomson (1997: 71) Type
- Aspicilia contigua (Lynge) J. W. Thomson - Lynge (1940: xx as Lecanora contigua Protologue), Thomson (1997: 72) Type
- Aspicilia curvabilis (Nyl.) Hue - Hansen (2006: 1)
- Aspicilia disserpens (Zahlbr.) Räsänen - Thomson (1997: 74)
- Aspicilia elevata (Lynge) J. W. Thomson - Thomson (1997: 75), Alstrup et al. (2000: 5)
- Aspicilia expansa (Lynge) Alstrup & E. S. Hansen - Alstrup et al. (2000: 5)
- Aspicilia humboldtii (Lynge) J. W. Thomson - Thomson (1997: 77), Hansen (2003: 150)
- Aspicilia lesleyana Darb. - Thomson (1997: 79)
- Aspicilia montana (H. Magn.) Hav. - Hansen (2002: 7), Hansen (2004: 85)
- Aspicilia narssaquensis (Lynge) J. W. Thomson - Lynge (1987: 163 Protologue), Thomson (1997: 85) Type
- Aspicilia nathorstii (Lynge) J. W. Thomson - Thomson (1997: 86)
- Aspicilia pergibbosa (H. Magn. ex Lynge) Räsänen - Thomson (1997: 87), Hansen (2004: 85)
- Aspicilia perradiata (Nyl.) Hue - Thomson (1997: 88), Alstrup et al. (2000: 5)
- Aspicilia pertusa (Lynge) J. W. Thomson - Thomson (1997: 89)
- Aspicilia polychroma Anzi - Hansen (2004: 85)
- Aspicilia rosulata Körb. - Thomson (1997: 90), Hansen (2003: 150)
- Aspicilia sublapponica (Zahlbr.) Oxner - Alstrup et al. (2000: 5)
- Aspicilia verrucigera Hue - Hansen (1986: 175)
- Aspilidea myrinii (Fr.) Hafellner - Hansen (2005: 39 as Aspicilia myrinii)
- Athallia holocarpa (Hoffm.) Arup, Frödén & Søchting - Alstrup (1982: 69 as Caloplaca holocarpa), Thomson (1997: 164 as Caloplaca holocarpa)
- Athallia pyracea (Ach.) Arup, Frödén & Søchting - Alstrup (1977: 115 as Caloplaca pyracea), Hansen, Poelt & Søchting (1987: 40 as Caloplaca pyracea)
- Athallia saxifragarum (Poelt) Arup, Frödén & Søchting - Hansen, Poelt & Søchting (1987: 41 as Caloplaca saxifragarum), Alstrup et al. (2000: 7 as Caloplaca saxifragarum), Hansen (2002: 109 as Caloplaca saxifragarum)
- Austroplaca soropelta (E. S. Hansen, Poelt & Søchting) Søchting, Frödén & Arup - Hansen et al. (1987: 26 as Caloplaca citrina var. soropelta Protologue) Type
- Bacidia bagliettoana (A. Massal. & De Not.) Jatta - Thomson (1997: 99)
- Bacidia laurocerasi (Delise ex Duby) Zahlbr. - Branth (1892: as Bacidia atrogrisea), Branth & Grønlund (1887: as Bacidia atrogrisea), Alstrup (1982: 69 as Bacidia atrogrisea)
- Bacidina inundata (Fr.) Vezda - Hansen (2004: 2)
- Baeomyces carneus (Retz.) Flörke - Thomson (1984: 48), Alstrup et al. (2000: 5), Hansen (2002: 108), Hansen (2005: 39), Hansen (2008: 400)
- Baeomyces placophyllus Ach. - Hansen (1984: 300), Thomson (1984: 49), Alstrup et al. (2000: 6), Hansen (2002: 108), Hansen (2006: 36)
- Baeomyces rufus (Huds.) Rebent. - Hansen (1978: 9), Thomson (1984: 52), Daniels et al. (1985: 50), Hansen (1999: 8), Alstrup et al. (2000: 6), Hansen (2002: 7), Hansen (2002: 108), Hansen (2006: 36), Hansen (2008: 400)
- Bellemerea alpina (Sommerf.) Clauzade & Cl. Roux - Thomson (1997: 115), Hansen (1999: 8), Hansen (2006: 36)
- Bellemerea cinereorufescens (Ach.) Clauzade & Cl. Roux - Thomson (1997: 116), Hansen (2002: 7)
- Bellemerea sanguinea (Kremp.) Hafellner & Cl. Roux - Hansen (1986: 175 as Aspicilia sanguinea)
- Bellemerea subsorediza (Lynge ex Å. E. Dahl) R. Sant. - Hansen (2002: 7), Hansen (2004: 2)
- Biatora cuprea (Sommerf.) Fr. - Thomson (1997: 341 as Lecidea cuprea), Hansen (2002: 7)
- Biatora subduplex (Nyl.) Printzen - Alstrup et al. (2000: 6), Hansen (2002: 7), Hansen (2003: 150)
- Biatora vernalis (L.) Fr. - Hansen (1978: 11 as Lecidea vernalis), Thomson (1997: 389 as Lecidea vernalis), Hansen (2002: 7), Hansen (2006: 36)
- Bibbya vermifera (Nyl.) Kistenich, Timdal, Bendiksby & S. Ekman - Thomson (1997: 102 as Bacidia hegetschweileri)
- Bilimbia microcarpa (Th. Fr.) Th. Fr. - Thomson (1997: 105 as Bacidia microcarpa)
- Bilimbia sabuletorum (Schreb.) Arnold - Alstrup et al. (2000: 12 as Mycobilimbia sabuletorum)
- Bellemerea cinereorufescens (Ach.) Clauzade & Cl. Roux - Hansen (1978: 10 as Lecanora cinereorufescens)
- Blastenia ammiospila (Wahlenb.) Arup, Søchting & Frödén - Alstrup (1977: 114 as Caloplaca ammiospila), Hansen (1978: 9 as Caloplaca cinnamomea), Hansen (1978b: 13 as Caloplaca cinnamomea), Hansen (1978: 57 as Caloplaca cinnamomea), Poelt (1985: 94 as Caloplaca cinnamomea), Hansen, Poelt & Søchting (1987: 17 as Caloplaca ammiospila), Thomson (1997: 151 as Caloplaca ammiospila), Alstrup et al. (2000: 6 as Caloplaca ammiospila), Hansen (2002: 7 as Caloplaca ammiospila), Hansen (2002: 109 as Caloplaca ammiospila), Hansen (2005: 40 as Caloplaca ammiospila)
- Blastenia ferruginea (Huds.) Th. Fr. - Branth (1895: as Caloplaca ferruginea), Alstrup (1977: 115 as Caloplaca ferruginea), Alstrup (1982: 69 as Caloplaca ferruginea)
- Brodoa oroarctica (Krog) Goward - Hansen (1978b: 14 as Hypogymnia oroarctica), Alstrup et al. (2000: 6), Hansen (2002: 108), Hansen (2005: 39), Hansen (2006: 36), Hansen (2008: 26), Hansen (2008: 296)
- Bryobilimbia hypnorum (Lib.) Fryday, Printzen & S. Ekman - Poelt (1985: 94 as Lecidea hypnorum), Thomson (1997: 351 as Lecidea hypnorum)
- Bryocaulon divergens (Ach.) Kärnefelt - Hansen (1983: 177 as Cornicularia divergens), Thomson (1984: 199 as Cornicularia divergens)Alstrup et al. (2000: 6), Hansen (2002: 108), Hansen (2005: 39), Hansen (2006: 36), Hansen (2008: 296)
- Bryonora castanea (Hepp) Poelt - Thomson (1997: 122), Hansen (2002: 7), Hansen (2002: 108), Hansen (2005: 39)
- Bryonora curvescens (Mudd) Poelt - Thomson (1997: 122)
- Bryoplaca jungermanniae (Vahl) Søchting, Frödén & Arup - Hansen, Poelt & Søchting (1987: 33 as Caloplaca jungermanniae), Thomson (1997: 166 as Caloplaca jungermanniae), Alstrup et al. (2000: 7 as Caloplaca jungermanniae), Hansen (2002: 7 as Caloplaca jungermanniae), Hansen (2002: 109 as Caloplaca jungermanniae), Hansen (2005: 40 as Caloplaca jungermanniae), Hansen (2006: 37 as Caloplaca jungermanniae), Hansen (2008: 401 as Caloplaca jungermanniae)
- Bryoria chalybeiformis (L.) Brodo & D. Hawksw. - Hansen (1978b: 13 as Alectoria chalybeiformis), Branth & Grønlund (1887: xx as Bryopogon jubatus var. chalybeiformis), Dahl (1950: xx erroneously as Bryoria lanestris fide Alstrup 1982: 69), Hansen (1978: 9 as Alectoria chalybeiformis), Hansen (1978: 57), Alstrup (1982: 69), Hansen (1983: 177), Thomson (1984: 56), Alstrup et al. (2000: 6), Hansen (2002: 108), Hansen (2005: 39), Hansen (2006: 37), Hansen (2008: 28), Hansen (2008: 401)
- Bryoria fuscescens (Gyeln.) Brodo & D. Hawksw. - Alstrup (1982: 69)
- Bryoria lanestris (Ach.) Brodo & D. Hawksw. - Alstrup (1982: 69), Thomson (1984: 59), Hansen (2005: 39), Hansen (2006: 37)
- Bryoria nitidula ( Th. Fr.) Brodo & D. Hawksw. - Hansen (1978: 9 as Alectoria nitidula), Thomson (1984: 63), Hansen (2002: 109), Hansen (2005: 39), Hansen (2006: 37)
- Bryoria simplicior (Vain.) Brodo & D. Hawksw. - Hansen (1978: 9 as Alectoria simplicior), Alstrup (1982: 69), Thomson (1984: 65)
- Bryoria tenuis (Å. E. Dahl) Brodo & D. Hawksw. - Dahl (1950: 144 as Alectoria tenuis Protologue), Brodo & Hawksworth (1977: xx), Thomson (1984: 66), Hawksworth & Coppins (2003: 363) Type
- Buellia aethalea (Ach.) Th. Fr. - Thomson (1997: 125), Hansen (2002: 7), Hansen (2006: 1)
- Buellia badia (Fr.) A. Massal. - Alstrup et al. (2000: 6 on Lecidea tesselata), Hansen (2003: 150)
- Buellia crepera (Nyl.) Zahlbr. - Hansen (2003: 150)
- Buellia disciformis (Fr.) Mudd - Hansen (1978: 9), Alstrup (1982: 69), Hansen (1983: 177), Thomson (1997: 129), Alstrup et al. (2000: 6)
- Buellia discoensis Lynge - Lynge (1937: 183 Protologue) Type
- Buellia ectolechioides (Vain.) Erichsen - Hansen (2003: 150)
- Buellia elegans Poelt - Alstrup et al. (2000: 6), Hansen (2001: xx), Hansen (2006: 37)
- Buellia epigaea (Hoffm.) Tuck. - Alstrup et al. (2000: 6)
- Buellia leptocline (Flot.) A. Massal. - Thomson (1997: 133)
- Buellia margaritacea (Fr.) Lynge - Hansen (1978: 9)
- Buellia vilis Th. Fr. - Thomson (1997: 141), Hansen (2006: 1)
- Caeruleum heppii (Nägeli ex Körb.) K. Knudsen & Arcadia - Alstrup et al. (2009: 5 as Acarospora heppii)
- Calogaya decipiens (Arnold) Arup, Frödén & Søchting - Hansen, Poelt & Søchting (1987: 26 as Caloplaca decipiens), Alstrup et al. (2000: 7 as Caloplaca decipiens), Hansen (2006: 37 as Caloplaca decipiens)
- Calogaya schistidii (Anzi) Arup, Frödén & Søchting - Hansen (2004: 85 as Fulgensia schistidii)
- Caloplaca alcarum Poelt - Hansen, Poelt & Søchting (1987: 15), Thomson (1997: 150), Hansen (1999: 8), Alstrup et al. (2000: 6), Hansen (2002: 109), Hansen (2005: 40), Hansen (2006: 37)
- Caloplaca anchon-phoeniceon Poelt & Clauzade - Hansen, Poelt & Søchting (1987: 18)
- Caloplaca borealis (Vain.) Poelt - Alstrup (1982: 69), Hansen, Poelt & Søchting (1987: 20)
- Caloplaca celata Th. Fr. - Hansen, Poelt & Søchting (1987: 22), Alstrup et al. (2000: 7)
- Caloplaca cerina (Hedw.) Th. Fr. - Alstrup (1977: 115), Hansen, Poelt & Søchting (1987: 22), Thomson (1997: 154), Alstrup et al. (2000: 7), Hansen (2002: 109), Hansen (2005: 40), Hansen (2008: 401)
- Caloplaca diphysodes (Nyl.) Jatta - Thomson (1997: 156), Alstrup et al. (2000: 7)
- Caloplaca elaeophora (E. S. Hansen, Poelt & Søchting) Alstrup & E. S. Hansen - Hansen et al. (1987: 35 as Caloplaca lithophila var. eleophora Protologue), Hansen, Alstrup et al. (2000: 7) Type
- Caloplaca epithallina Lynge - Lynge (1940: 113 on Dimelaena oreina, Melanelia disjuncta, Rhizoplaca melanophthalma Protologue), Poelt (1985: 466), Hansen, Poelt & Søchting (1987: 28), Thomson (1997: 159), Alstrup et al. (2000: 7), Hansen (2002: 109), Hansen (2005: 40) Type
- Caloplaca exsecuta (Nyl.) Dalla Torre & Sarnth. - Hansen, Poelt & Søchting (1987: 29), Thomson (1997: 160), Hansen (2002: 7)
- Caloplaca ferrugineofusca (Vain.) H. Magn. - Thomson (1997: 160)
- Caloplaca fraudans (Th. Fr.) Oliv. - Hansen, Poelt & Søchting (1987: 30), Thomson (1997: 162), Alstrup et al. (2000: 7), Hansen (2002: 7), Hansen (2005: 40), Hansen (2006: 37)
- Caloplaca friesii H. Magn. - Daniels et al. (1985: 52 as Caloplaca friesii)
- Caloplaca fulvolutea (Nyl.) Jatta - Hansen, Poelt & Søchting (1987: 31)
- Caloplaca insularis Poelt - Hansen, Poelt & Søchting (1987: 31), Alstrup et al. (2000: 7 on Aspicilia nikrapensis, Aspicilia spec.)
- Caloplaca jemtlandica H. Magn. var. jemtlandica - Hansen, Poelt & Søchting (1987: 32)
- Caloplaca jemtlandica H. Magn. var. cerinosora Hansen, Poelt & Søchting - Hansen, Poelt & Søchting (1987: 33 Protologue) Type
- Caloplaca leptocheila H. Magn. - Hansen, Poelt & Søchting (1987: 34)
- Caloplaca lithophila H. Magn. - Hansen (1978: 9), Hansen, Poelt & Søchting (1987: 34), Alstrup et al. (2000: 7), Hansen (2002: 7)
- Caloplaca livida (Hepp) Jatta - Daniels et al. (1985: 53), Hansen, Poelt & Søchting (1987: 35), Hansen (2002: 7)
- Caloplaca magni-filii Poelt - Hansen, Poelt & Søchting (1987: 36)
- Caloplaca nivalis (Koerb.) Th. Fr. - Hansen, Poelt & Søchting (1987: 36), Thomson (1997: 167), Hansen (1999: 8), Hansen (2002: 7)
- Caloplaca paulii Poelt - Hansen, Poelt & Søchting (1987: 37), Alstrup et al. (2000: 7)
- Caloplaca phaeocarpella (Nyl.) Zahlb. - Hansen, Poelt & Søchting (1987: 39), Thomson (1997: 168)
- Caloplaca psoricida Hansen, Poelt & Søchting - Hansen, Poelt & Søchting (1987: 39), Hansen (2008: 401)
- Caloplaca saxicola (Hoffm.) Nordin - Hansen, Poelt & Søchting (1987: 40), Thomson (1997: 169), Alstrup et al. (2000: 7)
- Caloplaca scopularis (Nyl.) Lettau. - Hansen (1978: 9), Hansen, Poelt & Søchting (1987: 41), Thomson (1997: 169)
- Caloplaca sinapisperma (Lam. & DC.) Maheu & Gillet - Hansen, Poelt & Søchting (1987: 42), Thomson (1997: 170), Alstrup et al. (2000: 7)
- Caloplaca sorocarpa (Vain.) Zahlbr. - Alstrup et al. (2000: 7)
- Caloplaca spitsbergensis H. Magn. - Hansen, Poelt & Søchting (1987: 42)
- Caloplaca stillicidiorum (Vahl) Lynge - Hansen (1978: 9), Hansen (1978b: 13), Hansen (1978: 57), Hansen (1983: 177)
- Caloplaca subolivacea (Th. Fr.) Lynge - Hansen (1978: 9), Hansen (1978b: 13), Hansen (1978: 57)
- Caloplaca tetraspora (Nyl.) Oliv. - Hansen, Poelt & Søchting (1987: 43), Thomson (1997: 172), Alstrup et al. (2000: 7), Hansen (2002: 7), Hansen (2002: 109), Hansen (2005: 40), Hansen (2008: 401)
- Caloplaca tiroliensis Zahlbr. - Alstrup (1982: 69), Hansen (1983: 177), Poelt (1985: 94), Hansen, Poelt & Søchting (1987: 43), Thomson (1997: 173), Alstrup et al. (2000: 7), Hansen (2002: 109), Hansen (2005: 40), Hansen (2008: 28), Hansen (2008: 401)
- Caloplaca tominii Savicz - Hansen, Poelt & Søchting (1987: 45), Thomson (1997: 175), Alstrup et al. (2000: 7), Hansen (2002: 109), Hansen (2005: 40), Hansen (2006: 37)
- Caloplaca tornoensis H. Magn. - Hansen (1982: xxx), Daniels et al. (1985: 53), Hansen, Poelt & Søchting (1987: 46), Thomson (1997: 175)
- Caloplaca trachyphylla (Tuck.) Zahlbr. - Hansen, Poelt & Søchting (1987: 47), Thomson (1997: 177)
- Caloplaca verruculifera (Vain.) Zahlbr. - Hansen, Poelt & Søchting (1987: 48), Thomson (1997: 177)
- Calvitimela aglaea (Sommerf.) Hafellner - Hansen (1978: 10 as Lecidea aglaea), Hansen (2006: 37)
- Calvitimela armeniaca (DC.) Hafellner - Thomson (1997: 60 as Tephromela armeniaca), Hansen (2002: 7), Hansen (2004: 15), Hansen (2005: 40), Hansen (2006: 37)
- Candelariella arctica (Körb.) R. Sant. - Alstrup (1977: 115), Hansen (1986: 176), Thomson (1997: 180), Hansen (1999: 8), Hansen (2006: 37)
- Candelariella athallina (Wedd.) Du Rietz - Thomson (1997: 181)
- Candelariella aurella (Hoffm.) Zahlbr. - Hansen (1978: 9), Hansen (1983: 177), Thomson (1997: 182), Alstrup et al. (2000: 7), Hansen (2002: 110), Hansen (2005: 40)
- Candelariella canadensis H. Magn. - Hansen (1978: 9), Hansen (1978b: 13), Hansen (1978: 57), Alstrup et al. (2000: 7)
- Candelariella coralliza (Nyl.) H. Magn. - Hansen (1978: 9), Thomson (1997: 183)
- Candelariella dispersa (Räsänen) Hakul. - Hansen (2002: 7), Hansen (2002: 110), Hansen (2005: 40)
- Candelariella kuusamoensis Räsänen - Alstrup et al. (2000: 7)
- Candelariella placodizans (Nyl.) H. Magn. - Thomson (1997: 186), Hansen (2002: 7), Hansen (2002: 110), Hansen (2005: 40), Hansen (2006: 37), Hansen (2008: 401)
- Candelariella terrigena Räsänen - Thomson (1997: 187), Hansen (2002: 7), Hansen (2002: 110), Hansen (2005: 40), Hansen (2008: 28)
- Candelariella vitellina (Hoffm.) Müll. Arg. - Hansen (1978: 9), Hansen (1978b: 13), Hansen (1978: 57), Alstrup (1982: 69), Hansen (1983: 177), Thomson (1997: 189), Alstrup et al. (2000: 7), Hansen (2002: 7), Hansen (2002: 110), Hansen (2005: 40), Hansen (2008: 401)
- Candelariella xanthostigma (Ach.) Lettau - Hansen (1978b: 13), Hansen (1984: 300), Thomson (1997: 190), Hansen (2002: 110), Hansen (2005: 40), Hansen (2006: 2), Hansen (2008: 401)
- Carbonea atronivea (Arnold) Hertel - Alstrup et al. (2000: 7)
- Carbonea vorticosa (Flörke) Hertel - Thomson (1997: 193), Alstrup et al. (2000: 7)
- Catapyrenium cinereum (Pers.) Körb. - Thomson (1984: 211 as Dermatocarpon cinereum), Alstrup et al. (2000: 8), Hansen (2002: 110)
- Catapyrenium daedaleum (Kremp.) Stein. - Thomson (1984: 209 as Dermatocarpon daedaleum), Alstrup et al. (2000: 8), Hansen (2002: 110)
- Catillaria chalybeia (Borrer) A. Massal. - Thomson (1997: 196), Alstrup et al. (2000: 8)
- Catillaria contristans (Nyl.) Zahlbr. - Alstrup et al. (2000: 8)
- Catillaria groenlandica Lynge - Lynge (1937: 82 Protologue), Hansen (1978: 9) Type
- Catillaria muscicola Lynge - Thomson (1997: 198), Alstrup et al. (2000: 8),
- Catillaria philippea (Mont.) A. Massal. - Thomson (1997: 199)
- Catillaria subnegans (Nyl.) Arnold - Alstrup et al. (2000: 8)
- Catolechia wahlenbergii (Ach.) Körb. - Thomson (1997: 202)
- Cephalophysis leucospila (Anzi) H. Kilias & Scheid. - Thomson (1997: 203), Alstrup et al. (2000: 8), Hansen (2006: 37)
- Cetraria aculeata (Schreb.) Fr. - Hansen (1978b: 14 as Cornicularia aculeata), Hansen (1978: 57 as Cornicularia aculeata), Thomson (1984: 198 as Cornicularia aculeata), Alstrup et al. (2000: 8)
- Cetraria ericetorum Opiz - Hansen (1978: 9), Hansen (1978b: 13), Thomson (1984: 79)
- Cetraria islandica (L.) Ach. - Hansen (1978: 9), Hansen (1978b: 13), Hansen (1978: 57), Thomson (1984: 84), Hansen (1999: 8), Alstrup et al. (2000: 8), Hansen (2002: 7), Hansen (2002: 110), Hansen (2005: 40), Hansen (2006: 37), Hansen (2008: 296), Hansen (2008: 401)
- Cetraria laevigata Rass. - Thomson (1984: 88)
- Cetraria muricata (Ach.) Eckfeldt - Hansen (1978: 10 as Cornicularia muricata), Hansen (1978b: 14 as Cornicularia muricata), Hansen (1978: 57 as Cornicularia muricata), Thomson (1984: 200 as Cornicularia muricata), Alstrup et al. (2000: 8), Hansen (2002: 7 as Cetraria muricata), Hansen (2002: 110 as Cetraria muricata), Hansen (2005: 40 as Cetraria muricata), Hansen (2006: 37), Hansen (2008: 28), Hansen (2008: 296), Hansen (2008: 401)
- Cetraria nigricans Nyl. - Hansen (1978: 9 as Cetraria nigricans), Hansen (1978: 57 as Cetraria nigricans), Thomson (1984: 89 as Cetraria nigricans), Hansen (2006: 37 as Cetraria nigricans)
- Cetraria sepincola (Ehrh.) Ach. - Hansen (1978: 9), Alstrup (1982: 69), Thomson (1984: 94), Hansen (2006: 37)
- Cetrariella commixta (Nyl.) A. Thell & Kärnefelt - Hansen (1978: 9 as Cetraria commixta), Hansen (1978b: 13 as Cetraria commixta), Hansen (1978: 57 as Cetraria commixta), Alstrup (1982: 69 as Cetraria commixta), Thomson (1984: 75 as Cetraria commixta), Alstrup et al. (2000: 8 as Cetraria commixta), Hansen (2002: 9 as Melanelia commixta), Hansen (2008: 29 as Melanelia commixta), Hansen (2008: 298 as Melanelia commixta)
- Cetrariella delisei (Bory ex Schaer.) Kärnefelt & A. Thell - Hansen (1978: 9 as Cetraria delisei), Hansen (1978b: 13 as Cetraria delisei), Hansen (1978: 57 as Cetraria delisei), Hansen (1983: 177 as Cetraria delisei), Thomson (1984: 77 as Cetraria delisei), Hansen (1999: 8), Alstrup et al. (2000: 8), Hansen (2002: 7), Hansen (2002: 110), Hansen (2005: 40), Hansen (2008: 28), Hansen (2008: 296), Hansen (2008: 401)
- Cetrariella fastigiata (Del. ex Nyl. in Norrl.) Kärnefelt & A. Thell - Thomson (1984: 80 as Cetraria fastigata)
- Chaenotheca furfuracea (L.) Tibell - Hansen (2002: 7), Hansen (2005: 40)
- Circinaria caesiocinerea (Nyl. ex Malbr.) A. Nordin, Savic & Tibell - Hansen (1986: 175 as Aspicilia caesiocinerea), Hansen (2002: 7 as Aspicilia caesiocinerea)
- Circinaria calcarea (Nyl. ex Malbr.) A. Nordin, Savic & Tibell - Alstrup et al. (2000: 5 as Aspicilia calcarea)
- Circinaria contorta (Hoffm.) A. Nordin, Savic & Tibell - Alstrup et al. (2000: 5 as Aspicilia contorta)
- Cladonia aberrans (Abbayes) Stuckenb. - Thomson (1984: 104)
- Cladonia acuminata (Ach.) Norrl. - Hansen (1978: 9), Thomson (1984: 105)
- Cladonia alaskana A. Evans - Hansen (2002: 110)
- Cladonia amaurocraea (Flörke) Schaer. - Hansen (1978: 9), Hansen (1978b: 13), Hansen (1978: 57), Hansen (1983: 177), Thomson (1984: 107), Hansen (2002: 7), Hansen (2002: 110), Hansen (2005: 40), Hansen (2008: 296), Hansen (2008: 401)
- Cladonia arbuscula (Wallr.) Flot. - Hansen (1978: 9), Thomson (1984: 110)
- Cladonia bacilliformis (Nyl.) Sarnth. - Thomson (1984: 112)
- Cladonia bellidiflora (Ach.) Schaer. - Hansen (1978: 9), Hansen (1978b: 13), Hansen (1978: 57), Thomson (1984: 113), Hansen (2002: 7), Hansen (2005: 40)
- Cladonia borealis S. Stenroos - Hansen (1999: 8), Alstrup et al. (2000: 8), Hansen (2002: 7), Hansen (2002: 111), Hansen (2005: 40), Hansen (2008: 296), Hansen (2008: 401)
- Cladonia cariosa (Ach.) Spreng. - Hansen (1978: 9), Hansen (1978b: 13), Hansen (1978: 57), Thomson (1984: 116), Hansen (2002: 7), Hansen (2005: 40), Hansen (2008: 296)
- Cladonia carneola (Fr.) Fr. - Hansen (1978: 9), Hansen (1978b: 13), Hansen (1978: 57), Hansen (1983: 177), Thomson (1984: 117), Hansen (2002: 7)
- Cladonia cenotea (Ach.) Schaer. - Daniels & Sipman (1975: 481), Hansen (1978: 9), Hansen (1978b: 13), Thomson (1984: 118), Hansen (2002: 111), Hansen (2008: 401)
- Cladonia chlorophaea (Flörke ex Sommerf.) Spreng. - Hansen (1978: 9), Hansen (1978b: 13), Hansen (1978: 57), Alstrup (1982: 69), Thomson (1984: 119), Hansen (2002: 8), Hansen (2002: 111), Hansen (2005: 40), Hansen (2008: 401)
- Cladonia coccifera (L.) Willd. - Hansen (1978: 9), Hansen (1978b: 13), Hansen (1978: 57), Alstrup (1982: 69), Hansen (1983: 177), Thomson (1984: 121), Alstrup et al. (2000: 8),
- Cladonia coniocraea (Flörke) Spreng. - Alstrup (1977: 115, Thomson (1984: 122)
- Cladonia cornuta (L.) Hoffm. - Hansen (1978: 10), Hansen (1978b: 13), Hansen (1978: 57), Thomson (1984: 124), Hansen (2002: 111), Hansen (2005: 40), Hansen (2008: 296)
- Cladonia cornuta (L.) Hoffm. subsp. groenlandica (E. Dahl) Ahti - Alstrup (1982: 69)
- Cladonia crispata (Ach.) Flot. - Hansen (1978: 10), Hansen (1978b: 13), Hansen (1978: 57), Thomson (1984: 125), Hansen (2002: 8)
- Cladonia cyanipes (Sommerf.) Nyl. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Hansen (1983: 177), Thomson (1984: 127), Hansen (2002: 8), Hansen (2002: 111), Hansen (2005: 40)
- Cladonia decorticata (Flörke) Spreng. - Thomson (1984: 128)
- Cladonia deformis (L.) Hoffm. - Thomson (1984: 129)
- Cladonia digitata (L.) Hoffm. - Thomson (1984: 131)
- Cladonia ecmocyna Leight. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Thomson (1984: 132), Hansen (2002: 8), Hansen (2008: 297), Hansen (2008: 401)
- Cladonia fimbriata (L.) Fr. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Alstrup (1982: 69), Thomson (1984: 133)
- Cladonia floerkeana (Fr.) Flörke - Hansen (1978: 10), Thomson (1984: 134)
- Cladonia furcata (Huds.) Schrad. - Alstrup (1982: 69)
- Cladonia sulphurina (Michx.) Fr. - Hansen (1978: 10 as Cladonia gonecha), Hansen (1978b: 14 as Cladonia gonecha)
- Cladonia gracilis (L.) Willd. var. gracilis - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Thomson (1984: 137), Hansen (2002: 8), Hansen (2005: 40), Hansen (2008: 297)
- Cladonia lepidota (Ach.) Nyl. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57)
- Cladonia luteoalba A. Wilson & Wheldon - Hansen (1986: 176), Hansen (2002: 8), Hansen (2002: 111), Hansen (2005: 40), Hansen (2008: 401)
- Cladonia macilenta Hoffm. - Alstrup et al. (2000: 8),
- Cladonia macroceras (Delise) Hav. - Hansen (2005: 40)
- Cladonia macrophylla (Schaer.) Stenham. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Thomson (1984: 141), Alstrup et al. (2000: 8), Hansen (2002: 8), Hansen (2005: 40)
- Cladonia macrophyllodes Nyl. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Thomson (1984: 143), Alstrup et al. (2000: 8), Hansen (2002: 8), Hansen (2005: 40)
- Cladonia maxima (Asah.) Ahti - Thomson (1984: 145)
- Cladonia merochlorophaea Asah. - Thomson (1984: 143)
- Cladonia mitis Sandst. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Thomson (1984: 148), Hansen (2002: 8), Hansen (2002: 111), Hansen (2005: 40), Hansen (2008: 297), Hansen (2008: 403)
- Cladonia norrlinii Vain. - Thomson (1984: 152)
- Cladonia ochrochlora Flörke - Hansen (1983: 485)
- Cladonia phyllophora Ehrh. ex Hoffm. - Hansen (1978: 10), Hansen (1978b: 14), Thomson (1984: 153), Hansen (2002: 8), Hansen (2002: 111), Hansen (2005: 40), Hansen (2008: 297), Hansen (2008: 403)
- Cladonia pleurota (Flörke) Schaer. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Thomson (1984: 154), Hansen (2002: 8), Hansen (2002: 111), Hansen (2005: 40), Hansen (2008: 403)
- Cladonia pocillum (Ach.) O. Rich. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Hansen (1983: 177), Thomson (1984: 156), Alstrup et al. (2000: 8), Hansen (2002: 111), Hansen (2005: 40), Hansen (2008: 28), Hansen (2008: 297), Hansen (2008: 403)
- Cladonia pyxidata (L.) Hoffm. - Alstrup (1977: 115), Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Alstrup (1982: 69), Hansen (1983: 177), Thomson (1984: 158), Hansen (2002: 8), Hansen (2002: 111), Hansen (2005: 40), Hansen (2008: 297), Hansen (2008: 403)
- Cladonia rangiferina (L.) F. H. Wigg. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Thomson (1984: 159), Hansen (2008: 297)
- Cladonia scabriuscula (Del. in Duby) Nyl. - Thomson (1984: 160)
- Cladonia squamosa (Scop.) Hoffm. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Thomson (1984: 161), Hansen (2002: 8), Hansen (2002: 111)
- Cladonia stellaris (Opiz) Pouzar & Vezda - Hansen (1978: 10), Thomson (1984: 163)
- Cladonia strepsilis (Ach.) Grognot - Hansen (1983: 485)
- Cladonia stricta (Nyl.) Nyl. - Thomson (1984: 164), Hansen (2002: 8), Hansen (2002: 111)
- Cladonia stygia (Fr.) Ruoss - Hansen (2002: 8), Hansen (2005: 40), Hansen (2008: 297)
- Cladonia subcervicornis (Vain.) DuRietz - Hansen (1978: 10), Hansen (1978b: 14), Thomson (1984: 165)
- Cladonia subfurcata (Nyl.) Arn. - Hansen (1978b: 14), Thomson (1984: 166)
- Cladonia sulphurina (Michx.) Fr. - Thomson (1984: 169), Hansen (2005: 40), Hansen (2008: 403), Hansen (2008: 297)
- Cladonia symphycarpa (Ach.) Fr. - Hansen (1983: 486)
- Cladonia trassii Ahti - Hansen (2005: 40), Hansen (2008: 298), Hansen (2008: 403)
- Cladonia turgida Ehrh. ex Hoffm. - Thomson (1984: 172)
- Cladonia uncialis (L.) F. H. Wigg. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Thomson (1984: 173), Hansen (2002: 8)
- Cladonia verticillata (Hoffm.) Schaer. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Thomson (1984: 174)
- Clauzadea monticola (Schaer.) Hafellner & Bellem. - Alstrup et al. (2000: 9)
- Collema bachmanianum (Fink.) Degel. - Thomson (1984: 179)
- Collema callopismum A. Massal. - Thomson (1984: 180)
- Collema ceraniscum Nyl. - Thomson (1984: 182), Alstrup et al. (2000: 9)
- Collema coccophorum Tuck. - Alstrup et al. (2000: 9)
- Collema fuscovirens (With.) J. R. Laundon - Alstrup et al. (2000: 9)
- Collema glebulentum (Nyl. ex Crombie) Degel. - Thomson (1984: 185), Alstrup et al. (2000: 9), Hansen (2002: 111)
- Collema occultatum Bagl. - Hansen (2003: 150)
- Collema polycarpon Hoff. - Thomson (1984: 190)
- Collema substellatum H. Magn. - Alstrup et al. (2000: 9), Hansen (2002: 111), Hansen (2008: 28), Hansen (2008: 403)
- Collema tuniforme (Ach.) Ach. - Thomson (1984: 192)
- Collema undulatum Laurer ex Flot. var. granulosum Degel. - Alstrup et al. (2000: 9), Hansen (2002: 111), Hansen (2005: 40), Hansen (2008: 28), Hansen (2008: 298)
- Collemopsidium sublitorale (Leight.) Grube & B. D. Ryan - Hansen (1984: 300 as Arthopyrenia sublitoralis), Thomson (1997: 49 as Arthopyrenia sublitoralis)
- Coniocybe furfuracea (L.) Ach. - Hansen (xxx: 12), Hansen (1978b: 14), Thomson (1997: 210)
- Cryptothele granuliforme (Nyl.) Henssen - Thomson (1997: 515 as Pyrenopsidium granuliforme)
- Cryptothele rhodosticta (Taylor) Henssen - Thomson (1997: 518 as Pyrenopsis rhodosticta)
- Cystocoleus ebeneus (Dillwyn) Thwaites - Alstrup et al. (2000: 9), Hansen (2002: 8), Hansen (2002: 112), Hansen (2008: 298), Hansen (2008: 29)
- Dacampia engeliana (Saut.) A. Massal. - Alstrup et al. (2000: 9 on Solorina saccata)
- Dacampia hookeri (Borrer) A. Massal. - Alstrup et al. (2000: 9 on Solorina saccata), Hansen (2002: 112)
- Dactylina arctica (Hook. f.) Nyl. - Hansen (1983: 177), Thomson (1984: 203), Hansen (2002: 112)
- Dactylina ramulosa (Hook. f.) Tuck. - Hansen (1983: 177), Thomson (1984: 207), Alstrup et al. (2000: 9), Hansen (2002: 112), Hansen (2005: 40)
- Dermatocarpon intestiniforme (Körb.) Hasse - Thomson (1984: 216), Hansen (1982: 12
- Dermatocarpon luridum (With.) J. R. Laundon - Alstrup et al. (2000: 9)
- Dermatocarpon lyngei Servit - Thomson (1984: 218)
- Dermatocarpon meiophyllizum Vain. - Alstrup et al. (2000: 9), Hansen (2003: 150)
- Dermatocarpon miniatum (L.) Mann. - Hansen (1978b: 14), Thomson (1984: 219), Alstrup et al. (2000: 9), Hansen (2008: 29)
- Dermatocarpon rivulorum (Arnold) Dalla Torre & Sarnth. - Hansen (1978b: 14), Hansen (1978: 57), Thomson (1984: 220)
- Dibaeis baeomyces (L. f.) Rambold & Hertel - Thomson (1984: 51 as Baeomyces roseus), Daniels et al. (1985: 50 as Baeomyces roseus)
- Dimelaena oreina (Ach.) Norman - Hansen (1978b: 14), Thomson (1997: 216), Alstrup et al. (2000: 9), Hansen (2002: 112), Hansen (2005: 40)
- Diploschistes gypsaceus (Ach.) Zahlbr. - Hansen (2004: 85)
- Diploschistes muscorum (Scop.) R. Sant. - Thomson (1997: 218), Alstrup et al. (2000: 9), Hansen (2002: 112), Hansen (2008: 403)
- Diploschistes scruposus (Schreb.) Norman - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Thomson (1997: 218), Hansen (2002: 8)
- Diplotomma alboatrum (Hoffm.) Flot. - Alstrup (1982: 69 as Buellia alboatra), Thomson (1997: 127 as Buellia alboatra)
- Diplotomma nivale (Bagl. & Carestia) Hafellner - Thomson (1997: 134 as Buellia nivalis), Alstrup et al. (2000: 6 Buellia nivalis on Rusavskia elegans)
- Eiglera flavida (Hepp ex Kremp.) Hafellner - Thomson (1997: 220), Alstrup et al. (2000: 9)
- Enchylium tenax (Sw.) Gray - Thomson (1984: 191 as Collema tenax), Alstrup et al. (2000: 9 as Collema tenax)
- Endocarpon pulvinatum Th. Fr. - Hansen (1984: 302), Hansen (2002: 112)
- Endocarpon pusillum Hedw. - Hansen (1984: 304), Hansen (1999: 8), Alstrup et al. (2000: 9)
- Ephebe hispidula (Ach.) Horw. - Thomson (1984: 224), Hansen (1999: 8), Alstrup et al. (2000: 9), Hansen (2002: 8)
- Ephebe lanata (L.) Vain. - Hansen (1978b: 14), Hansen (1978: 57), Thomson (1984: 225)
- Ephebe multispora (Å. E. Dahl) Henssen - Thomson (1984: 226)
- Evernia mesomorpha Nyl. - Thomson (1984: 229)
- Euopsis granatina (Sommerf.) Nyl. - Thomson (1997: 223)
- Euopsis pulvinata (Schaer.) Vain. - Thomson (1997: 518 as Pyrenopsis pulvinata), Hansen (2002: 8), Hansen (2004: 85), Hansen (2005: 40)
- Farnoldia hypocrita (A. Massal.) Fröberg - Thomson (1997: 353 as Lecidea hypocrita), Alstrup et al. (2000: 9)
- Farnoldia micropsis (A. Massal.) Hertel - Thomson (1997: 226)
- Flavocetraria nivalis (L.) Kärnefelt & A. Thell - Hansen (1978: 9 as Cetraria nivalis), Hansen (1978b: 13 as Cetraria nivalis), Hansen (1978: 57), Hansen (1983: 177 as Cetraria nivalis), Thomson (1984: 92 as Cetraria nivalis), Hansen (1999: 8), Alstrup et al. (2000: 9), Hansen (2002: 8), Hansen (2002: 112), Hansen (2005: 40), Hansen (2008: 29), Hansen (2008: 298), Hansen (2008: 403)
- Flavoplaca citrina (Hoffm.) Arup, Frödén & Søchting var. citrina - Hansen, Poelt & Søchting (1987: 25 as Caloplaca citrina), Alstrup et al. (2000: 7 as Caloplaca citrina), Hansen (2005: 40 as Caloplaca citrina)
- Flavoplaca marina (Wedd.) Arup, Frödén & Søchting - Hansen (1978: 9 as Caloplaca marina), Hansen (1978b: 13 as Caloplaca marina), Thomson (1997: 166 as Caloplaca marina)
- Frutidella caesioatra (Schaer.) Kalb - Thomson (1997: 334 as Lecidea caesioatra), Hansen (2002: 8)
- Fulgensia bracteata (Hoffm.) Räsänen var. bracteata - Thomson (1997: 228 as Fulgensia bracteata), Alstrup et al. (2000: 9 as Fulgensia bracteata), Hansen (2002: 112 as Fulgensia bracteata), Hansen (2005: 40 as Fulgensia bracteata), Hansen (2008: 404 as Fulgensia bracteata)
- Fuscidea cyathoides (Ach.) V. Wirth & Vezda - Thomson (1997: 231)
- Fuscopannaria praetermissa (Nyl.) P. M. Jørg. - Alstrup et al. (2000: 9), Hansen (2002: 8), Hansen (2005: 40), Hansen (2008: 404)
- Glypholecia scabra (Pers.) Müll. Arg. - Thomson (1997: 236), Alstrup et al. (2000: 10)
- Gyalecta foveolaris (Ach.) Schaer. - Hansen (1978: 10), Thomson (1997: 238), Hansen (2002: 112)
- Gyalecta friesii (A. Massal.) Körb. - Thomson (1997: 239)
- Gyalecta geoica (Wahlenb.) Ach. - Thomson (1997: 240)
- Gyalecta incarnata (Th. Fr. & Graewe ex Th. Fr.) Baloch & Lücking - Thomson (1997: 117 as Belonia incarnata)
- Gyalecta jenensis (Batsch) Zahlbr. - Thomson (1997: 241)
- Gyalecta peziza(Mont.) Anzi - Thomson (1997: 242)
- Gyalecta russula (Körb. ex Nyl.) Baloch, Lumbsch & Wedin - Thomson (1997: 117 as Belonia russula)
- Gyalecta truncigena (Ach.) Hepp - Thomson (1997: 242)
- Gyalidea lecideopsis (A. Massal.) Lettau ex Vezda - Hansen & Graff-Petersen (1986: 76), Thomson (1997: 243)
- Gyalolechia desertorum (Tomin) Søchting, Frödén & Arup - Alstrup et al. (2000: 9 as Fulgensia desertorum), Hansen (2002: 112 as Fulgensia desertorum)
- Gyalolechia flavovirescens (Wulfen) Søchting, Frödén & Arup - Hansen (1978: 9 as Caloplaca flavovirescens), Hansen, Poelt & Søchting (1987: 29 as Caloplaca flavovirescens), Thomson (1997: 161 as Caloplaca flavovirescens), Alstrup et al. (2000: 7 as Caloplaca flavovirescens)
- Gyalolechia xanthostigmoidea (Räsänen) Søchting, Frödén & Arup - Hansen, Poelt & Søchting (1987: 27 as Caloplaca epiphyta), Alstrup et al. (2000: 7 as Caloplaca epiphyta)
- Gypsoplaca macrophylla (Zahlbr.) Timdal - Alstrup et al. (2000: 10), Hansen (2002: 112)
- Heppia lutosa (Ach.) Nyl. - Thomson (1997: 244)
- Hymenelia arctica (Lynge) Lutzoni - Alstrup et al. (2000: 9), Hansen (2004: 85)
- Hymenelia cyanocarpa (Anzi) Lutzoni - Thomson (1997: 251 as Ionaspis cyanocarpa), Alstrup et al. (2000: 10)
- Hymenelia epulotica (Ach.) Lutzoni - Thomson (1997: 253 as Ionaspis epulotica)
- Hymenelia heteromorpha (Kremp.) Lutzoni - Alstrup et al. (2000: 10)
- Hymenelia lacustris (With.) M. Choisy - Thomson (1997: 245), Hansen (2002: 112)
- Hypocenomyce leucococca R. Sant. - Hansen (2004: 86)
- Hypogymnia austerodes (Nyl.) Räsänen - Alstrup (1977: 115), Hansen (1978: 10), Thomson (1984: 237), Alstrup et al. (2000: 10), Hansen (2002: 112), Hansen (2005: 41)
- Hypogymnia oroarctica Krog - Hansen (1978: 10), Hansen (1978: 57), Hansen (1983: 177), Thomson (1984: 239)
- Hypogymnia physodes (L.) Nyl. - Alstrup (1977: 115), Hansen (1978: 10), Thomson (1984: 241), Hansen (2002: 113)
- Hypogymnia subobscura (Vain.) Poelt - Thomson (1984: 242), Alstrup et al. (2000: 10), Hansen (2002: 113), Hansen (2005: 41), Hansen (2008: 29)
- Hypogymnia tubulosa (Schaer.) Hav. - Alstrup (1977: 115)
- Icmadophila ericetorum (L.) Zahlbr. - Thomson (1997: 249)
- Ionaspis annularis H. Magn. - Thomson (1997: 251)
- Ionaspis chrysophana (Körb.) Th. Fr. - Thomson (1997: 255 as Ionaspis suaveolens), Alstrup et al. (2000: 10 as Ionaspis suaveolens), Hansen (2002: 113 as Ionaspis suaveolens)
- Ionaspis odora (Ach.) Th. Fr. - Alstrup et al. (2000: 10)
- Ionaspis ventosa P. M. Jørg. & R. Sant. - Alstrup et al. (2000: 10)
- Japewia tornoensis (Nyl.) Tønsberg - Hansen (2002: 8)
- Koerberiella wimmeriana (Körb.) Stein - Hansen (2002: 8)
- Lambiella furvella (Nyl. ex Mudd) M. Westb. & Resl - Hansen (2002: 11 as Rimularia furvella)
- Lambiella impavida (Th. Fr.) M. Westb. & Resl - Thomson (1997: 354 as Lecidea impavida), Hansen (2002: 11 as Rimularia impavida), Hansen (2004: 88 as Rimularia impavida)
- Lasallia pensylvanica (Hoffm.) Llano - Hansen (1978: 10), Thomson (1984: 246)
- Lecania flavescens Lynge - Thomson (1997: 257)
- Lecania subfuscula (Nyl.) S. Ekman - Thomson (1997: 111 as Bacidia subfuscula)
- Lecanora anopta Nyl. - Hansen (2004: 2)
- Lecanora arctica Lynge - Lynge (1937: 132 Protologue), Hansen (1978: 10) Type
- Lecanora argopholis (Ach.) Ach. - Thomson (1997: 267), Hansen (1999: 8), Alstrup et al. (2000: 10), Hansen (2002: 8), Hansen (2002: 113), Hansen (2005: 41)
- Lecanora atrosulphurea (Wahlenb.) Ach. - Hansen (1984: 304), Thomson (1997: 267), Hansen (2002: 8), Hansen (2002: 113)
- Lecanora boligera (Norman) Hedl. - Daniels et al. (1985: 55), Hansen (2002: 8), Hansen (2004: 86)
- Lecanora cavicola Creveld - Alstrup et al. (2000: 10)
- Lecanora cenisia Ach. - Hansen (1986: 177), Thomson (1997: 272), Hansen (2002: 8), Hansen (2005: 41)
- Lecanora chlarotera Nyl. - Alstrup (1977: 115 as Lecanora chlarona), Alstrup (1977: 115)
- Lecanora chloroleprosa (Vain.) H. Magn. - Hansen (1983: 486), Hansen (1999: 8), Hansen (2002: 8), Hansen (2005: 41)
- Lecanora circumborealis Brodo & Vitik. - Thomson (1997: 274)
- Lecanora confusa Almb. - Alstrup (1977: 115)
- Lecanora contractula Nyl. - Thomson (1997: 276), Hansen (1999: 8), Alstrup et al. (2000: 10), Hansen (2002: 8), Hansen (2002: 113), Hansen (2004: 86), Hansen (2005: 41)
- Lecanora crenulata Hook. - Thomson (1997: 277), Alstrup et al. (2000: 10)
- Lecanora discoensis Lynge - Thomson (1997: 278)
- Lecanora dispersa (Pers.) Sommerf. - Thomson (1997: 278), Alstrup et al. (2000: 10), Hansen (2002: 113)
- Lecanora epibryon (Ach.) Ach. - Hansen (1978: 10 as Lecanora epibryon), Hansen (1983: 177), Thomson (1997: 279), Alstrup et al. (2000: 10), Hansen (2002: 113), Hansen (2005: 41), Hansen (2008: 404)
- Lecanora expallens Ach. - Alstrup (1977: 116), Thomson (1997: 280)
- Lecanora flotowiana Sprengel - Alstrup et al. (2000: 10)
- Lecanora frustulosa (Dicks.) Ach. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Alstrup et al. (2000: 10)
- Lecanora fuscescens (Sommerf.) Nyl. - Thomson (1997: 283), Alstrup et al. (2000: 10), Hansen (2002: 8), Hansen (2002: 113), Hansen (2005: 41), Hansen (2008: 404)
- Lecanora gangaleoides Nyl. - Alstrup et al. (2000: 10), Hansen (2004: 2)
- Lecanora geophila (Th. Fr.) Poelt- Thomson (1997: 283), Alstrup et al. (2000: 10), Hansen (2002: 113), Hansen (2005: 41), Hansen (2006: 2), Hansen (2008: 404)
- Lecanora groenlandica Lynge- Lynge (xx: xx Protologue), Thomson (1997: 285) Type
- Lecanora hagenii (Ach.) Ach. - Thomson (1997:286)
- Lecanora hagenii (Ach.) Ach. var. fallax Hepp - Hansen (2005: 41), Hansen (2008: 29)
- Lecanora hagenii (Ach.) Ach. f. saxifragae Anzi - Alstrup et al. (2000: 10)
- Lecanora intricata (Ach.) Ach. - Thomson (1997: 288), Hansen (1999: 8), Hansen (2002: 8), Hansen (2002: 113), Hansen (2005: 41)
- Lecanora leptacina Sommerf. - Thomson (1997: 289), Hansen (2002: 8)
- Lecanora leucococca Sommerf. - Alstrup et al. (2000: 10), Hansen (2002: 8), Hansen (2004: 86)
- Lecanora luteovernalis Brodo - Alstrup et al. (2000: 10), Hansen (2002: 113), Hansen (2008: 404)
- Lecanora marginata (Schaerer) Hertel & Rambold - Thomson (1997: 291), Alstrup et al. (2000: 10), Hansen (2002: 113)
- Lecanora mastoidea Lynge - Hansen (1978: 10)
- Lecanora maxima Lynge - Hansen (1984: 306), Thomson (1997: 293)
- Lecanora microfusca Lynge - Thomson (1997: 294)
- Lecanora pachythallina Lynge - Hansen (1984: 308)
- Lecanora perpruinosa Fröberg - Alstrup et al. (2000: 10)
- Lecanora poliophaea (Wahlenb.) Ach. - Hansen (2004: 2)
- Lecanora polytropa (Ehrh. in Hoffm.) Rabenh. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Hansen (1983: 177), Hansen & Graff-Petersen (1986: 76), Thomson (1997: 299), Hansen (1999: 8), Alstrup et al. (2000: 10), Hansen (2002: 8), Hansen (2002: 113), Hansen (2004: 15), Hansen (2005: 41), Hansen (2008: 404)
- Lecanora reagens Norman - Hansen (1983: 487)
- Lecanora rimicola H. Magn. - Hansen (2004: 2)
- Lecanora rupicola (L.) Zahlbr. - Thomson (1997: 303)
- Lecanora saligna (Schrad.) Zahlbr. - Thomson (1997: 305), Hansen (2004: 86)
- Lecanora sambuci (Pers.) Nyl. - Thomson (1997: 306)
- Lecanora straminea (Wahlenb.) Ach. - Hansen (1978: 10), Hansen (1978b: 14), Alstrup (1987: 52), Thomson (1997: 306)
- Lecanora subradiosa Nyl. - Hansen (1983: 488)
- Lecanora surrecta Lynge - Lynge (1940: xx Protologue), Hansen (2004: 2) Type
- Lecanora swartzii (Ach.) Ach. - Alstrup et al. (2000: 10)
- Lecanora symmicta (Ach.) Ach. - Thomson (1997: 309)
- Lecanora torrida Vain. - Thomson (1997: 310)
- Lecanora umbrina (Ach.) A. Massal. - Alstrup et al. (2000: 10)
- Lecanora varia (Hoffm.) Ach. - Alstrup (1977: 116), Thomson (1997: 311), Hansen (2003: 151)
- Lecanora vicaria (Th. Fr.) Vain. - Hansen (2004: 2)
- Lecidea antiloga Stirt. - Hansen (2002: 8)
- Lecidea atrobrunnea (Ramond ex Lam. & DC.) Schaer. - Hansen (1978: 10), Hansen (1978b: 14), Hansen (1978: 57), Thomson (1997: 327), Alstrup et al. (2000: 10), Hansen (2002: 8), Hansen (2002: 114), Hansen (2005: 41)
- Lecidea atrofulva Sommerf. - Hansen (1986: 180), Thomson (1997: 328)
- Lecidea atromarginata H. Magn. - Alstrup et al. (2000: 10), Hansen (2002: 8), Hansen (2003: 151)
- Lecidea auriculata Th. Fr. - Fries (1861: 213 Protologue), Hansen (1978b: 15), Hansen (1983: 177), Thomson (1997: 329), Alstrup et al. (2000: 11), Hansen (2002: 8), Hansen (2002: 114) Type
- Lecidea berengeriana (A. Massal.) Nyl. - Hansen (1978: 10), Thomson (1997: 331)
- Lecidea conferenda Nyl. - Thomson (1997: 338), Alstrup et al. (2000: 11), Hansen (2004: 3)
- Lecidea confluens (Weber) Ach. - Thomson (1997: 339), Alstrup et al. (2000: 11)
- Lecidea convallium Lynge - Lynge (1937: 74 Protologue) Type
- Lecidea diapensiae Th. Fr. - Thomson (1997: 342)
- Lecidea diducens Nyl. - Thomson (1997: 343)
- Lecidea convallium Lynge - Thomson (1997: 340)
- Lecidea ementiens Nyl. - Thomson (1997: 344)
- Lecidea erythrophaea Flörke - Thomson (1997: 345)
- Lecidea fuscoatra (L.) Ach - Thomson (1997: 347)
- Lecidea furvella Nyl. ex Mudd - Hansen (1983: 490), Thomson (1997: 346)
- Lecidea garovaglii Schaer. - Thomson (1997: 348)
- Lecidea globifera Ach. - Hansen (1978: 11)
- Lecidea haerjedalica H. Magn. - Thomson (1997: 349), Alstrup et al. (2000: 11)
- Lecidea humboldtii Lynge - Lynge (1940: xx Type), Thomson (1997: 350)
- Lecidea insularis Nyl. - Hansen (1986: 182)
- Lecidea lactea Flörke ex Schaer. - Hansen (1978: 11 as Lecidea pantherina), Hansen (1978b: 15 as Lecidea pantherina), Hansen (1978: 57 as Lecidea pantherina), Thomson (1997: 355), Hansen (1999: 8 as Lecidea lapicida var. pantherina), Alstrup et al. (2000: 11), Hansen (2002: 114), Hansen (2002: 8 as Lecidea lapicida var. pantherina), Hansen (2005: 41 as Lecidea lapicida var. pantherina)
- Lecidea lapicida (Ach.) Ach. - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Thomson (1997: 357), Hansen (1999: 8), Alstrup et al. (2000: 11), Hansen (2002: 8), Hansen (2002: 114), Hansen (2008: 404)
- Lecidea leptoboloides Nyl. - Thomson (1997: 358)
- Lecidea leucothallina Arnold - Thomson (1997: 360), Alstrup et al. (2000: 11), Hansen (2002: 8), Hansen (2004: 86)
- Lecidea lithophila (Ach.) Ach. - Thomson (1997: 362)
- Lecidea lithophiloides Müll. Arg. - Hansen (2004: 86)
- Lecidea molybdochroa Hertel - Thomson (1997: 363), Alstrup et al. (2000: 11)
- Lecidea nylanderi (Anzi) Th. Fr. - Thomson (1997: 365)
- Lecidea occidentalis Lynge - Thomson (1997: 366)
- Lecidea pachydermatica Lynge - Lynge (1937: 40 Type)
- Lecidea pallida Th. Fr. - Thomson (1997: 367) Nom. illegit.
- Lecidea paupercula Th. Fr. - Hansen (1984: 308), Thomson (1997: 369)
- Lecidea plana (J. Lahm) Nyl. - Thomson (1997: 372), Alstrup et al. (2000: 11), Hansen (2004: 87)
- Lecidea praenubila Nyl. - Alstrup et al. (2000: 11), Hansen (2006: 2)
- Lecidea promiscens Nyl. - Thomson (1997: 375)
- Lecidea ramulosa Th. Fr. - Thomson (1997: 376), Alstrup et al. (2000: 11), Hansen (2002: 114)
- Lecidea silacea (Hoffm.) Ach. - Hansen (1984: 308), Hansen (1986: 182), Thomson (1997: 378), Alstrup et al. (2000: 11), Hansen (2002: 8), Hansen (2002: 114)
- Lecidea subduplex (Nyl.) Nyl. - Thomson (1997: 381)
- Lecidea sublimosa Nyl. - Hansen (2004: 87)
- Lecidea subplumbea Anzi - Thomson (1997: 382)
- Lecidea subrhagadiella Lynge - Thomson (1997: 383)
- Lecidea symmicta (Ach.) Ach. - Hansen (1978: 11)
- Lecidea tenuissima Lynge - Thomson (1997: 383)
- Lecidea tessellata Flörke - Thomson (1997: 384), Alstrup et al. (2000: 11), Hansen (2002: 8), Hansen (2002: 114), Hansen (2005: 41), Hansen (2008: 29)
- Lecidea theodori Lynge - Thomson (1997: 385)
- Lecidea tornoënsis Nyl. - Hansen (1978: 11), Thomson (1997: 387)
- Lecidea umbonata (Hepp.) Mudd - Thomson (1997: 389)
- Lecidella asema (Nyl.) Knoph & Hertel - Hansen (2006: 2)
- Lecidella bullata Körb. - Thomson (1997: 393), Alstrup et al. (2000: 11), Hansen (2002: 114)
- Lecidella carpathica Körb. - Thomson (1997: 395), Alstrup et al. (2000: 11), Hansen (2004: 3)
- Lecidella effugiens (B. Nilson) Knoph & Hertel - Alstrup et al. (2000: 11)
- Lecidella elaeochroma (Ach.) Hazslin - Thomson (1997: 396)
- Lecidella euphorea (Flörke) Hertel - Thomson (1997: 398), Hansen (2002: 114), Hansen (2004: 87)
- Lecidella inamoena (Müll.Arg.) Hertel - Thomson (1997: 399)
- Lecidella patavia (A. Massal.) Knoph & Hertel - Alstrup et al. (2000: 11)
- Lecidella stigmatea (Ach.) Hertel & Leuck. - Thomson (1997: 402), Alstrup et al. (2000: 11), Hansen (2002: 114)
- Lecidella wulfenii (Hepp) Körb. - Thomson (1997: 403), Alstrup et al. (2000: 11), Hansen (2002: 114), Hansen (2005: 41), Hansen (2008: 404)
- Lecidoma demissum (Rutstr.) Schneider & Hertel - Hansen (1978: 10), Hansen (1978b: 15 as Lecidea demissa), Hansen (1978: 57 as Lecanora demissa), Thomson (1997: 405), Hansen (2002: 8), Hansen (2008: 404)
- Leciophysma finmarkicum Th. Fr. - Thomson (1984: 248), Poelt (1985: 94)
- Leciophysma furfurascens (Nyl.) Gyeln. - Thomson (1984: 249)
- Lempholemma polyanthes (Schrad.) Malme - Thomson (1997: 407 as Lempholemma myriococcum), Hansen (2006: 2)
- Lempholemma radiatum (Sommerf.) Henssen - Hansen (1984: 309), Thomson (1997: 407)
- Lepra aspergilla (Ach.) Hafellner - Hansen (2004: 3 as Pertusaria aspergilla)
- Lepra dactylina (Ach.) Hafellner - Hansen (1978: 11 as Pertusaria dactylina), Hansen (1978b: 16 as Pertusaria dactylina), Hansen (1978: 57 as Pertusaria dactylina), Thomson (1997: 453 as Pertusaria dactylina), Alstrup et al. (2000: 13 as Pertusaria dactylina), Hansen (2002: 10 as Pertusaria dactylina), Hansen (2002: 117 as Pertusaria dactylina), Hansen (2005: 41 as Pertusaria dactylina)
- Lepra panyrga (Ach.) Hafellner - Hansen (1978: 11 as Pertusaria panyrga), Thomson (1997: 459 as Pertusaria panyrga), Alstrup et al. (2000: 13), Hansen (2002: 117 as Pertusaria panyrga)
- Lepraria arctica (Lynge) Wetmore - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57)
- Lepraria eburnea J. R. Laundon - Hansen (2008: 404)
- Lepraria frigida J. R. Laundon - Alstrup et al. (2000: 11)
- Lepraria gelida Tønsberg & Zhurb. - Hansen (2008: 404)
- Lepraria neglecta (Nyl.) Lettau - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Hansen (1983: 177), Hansen (1999: 8), Hansen (2002: 9)
- Lepraria frigida J. R. Laundon - Hansen (2002: 114)
- Lepraria lobificans Nyl. - Hansen (2002: 114)
- Lepraria subalbicans (I. M. Lamb) Lendemer & B. P. Hodk. - Hansen (1978: 11 as Leprocaulon subalbicans), Thomson (1984: 250 as Leprocaulon subalbicans), Hansen (1999: 8 as Leprocaulon subalbicans), Alstrup et al. (2000: 11 as Leprocaulon subalbicans), Hansen (2002: 9 as Leprocaulon subalbicans), Hansen (2002: 114 as Leprocaulon subalbicans), Hansen (2005: 41 as Leprocaulon subalbicans), Hansen (2008: 298 as Leprocaulon subalbicans)
- Leptochidium albociliatum (Desm.) M. Choisy - Poelt (1985: 94)
- Leptogium saturninum (Dicks.) Nyl. - Hansen (1978: 11), Thomson (1984: 262), Hansen (2002: 9)
- Leptogium tenuissimum (Dicks.) Körb. - Thomson (1984: 264), Hansen (2002: 114), Hansen (2006: 2)
- Leptogium teretiusculum (Wallr.) Arnold - Hansen (2006: 2)
- Lichenomphalia alpina (Britzelm.) Redhead, Lutzoni, Moncalvo & Vilgalys - Hansen (2002: 115 as Omphalina alpina)
- Lichenomphalia hudsoniana (H.S. Jenn.) Redhead, Lutzoni, Moncalvo & Vilgalys - Hansen (1978: 10 as Coriscium viride), Hansen (1978b: 14 as Coriscium viride), Thomson (1984: 196 as Coriscium viride), Hansen (2002: 115 as Omphalina hudsoniana), Hansen (2005: 41)
- Lithographa tesserata (DC.) Nyl. - Thomson (1997: 408)
- Lobaria hallii (Tuck.) Zahlbr. - Thomson (1984: 266)
- Lobaria scrobiculata (Scop.) P. Gaertn. - Hansen (1978: 11), Thomson (1984: 271)
- Lobothallia alphoplaca (Wahlenb. in Ach.) Hafellner - Thomson (1997: 59 as Aspicilia alphoplaca), Hansen (2002: 115)
- Lobothallia melanaspis (Ach.) Hafellner - Thomson (1997: 82 as Aspicilia melanaspis)Hansen (2002: 115)
- Lobothallia radiosa (Hoffm.) Hafellner - Hansen (2003: 150)
- Lopadium coralliodeum (Nyl.) Lynge - Thomson (1997: 409), Hansen (2002: 9), Hansen (2002: 115), Hansen (2005: 41), Hansen (2008: 298)
- Lopadium pezizoideum (Ach.) Körb. - Thomson (1997: 411), Alstrup et al. (2000: 11), Hansen (2002: 9), Hansen (2002: 115)
- Massalongia carnosa (Dicks.) Körb. - Hansen (1978: 11), Hansen (1978b: 15), Thomson (1984: 274), Hansen (2002: 9)
- Megaspora verrucosa (Ach.) Hafellner & V. Wirth - Alstrup et al. (2000: 11), Hansen (2002: 115)
- Melanelia disjuncta (Erichsen) Essl. - Hansen (1978: 11 as Parmelia disjuncta), Hansen (1978b: 15 as Parmelia disjuncta), Thomson (1984: 299 as Parmelia disjuncta), Alstrup et al. (2000: 11 as Melanelia disjuncta), Hansen (2002: 9), Hansen (2002: 115), Hansen (2005: 41), Hansen (2008: 298)
- Melanelia panniformis (Nyl.) Vain. - Thomson (1984: 309)
- Melanelia hepatizon (Ach.) A. Thell - Hansen (1978: 9 as Cetraria hepatizon), Hansen (1978b: 13), Hansen (1978: 57 as Cetraria hepatizon), Alstrup (1982: 69 as Cetraria hepatizon), Thomson (1984: 82 as Cetraria hepatizon), Hansen (2002: 9), Hansen (2004: 15), Hansen (2005: 41), Hansen (2008: 299), Hansen (2008: 404)
- Melanelia sorediata (Ach.) Goward & Ahti - Thomson (1984: 312 as Parmelia sorediosa), Alstrup et al. (2000: 12)
- Melanelia stygia (L.) Essl. - Hansen (2002: 115), Hansen (2008: 299)
- Melanelixia glabratula (Lamy) Sandler & Arup - Alstrup (1977: 116 as Melanelia glabratula)
- Melanohalea elegantula (Zahlbr.) O. Blanco et al. - Thomson (1984: 300 as Parmelia elegantula)
- Melanohalea exasperata (De Not.) O. Blanco et al. - Alstrup (1977: 116 as Parmelia exasperata)
- Melanohalea exasperatula (Nyl.) O. Blanco et al. - Alstrup (1977: 116 as Parmelia exasperatula), Hansen (1984: 309 as Parmelia exasperatula), Thomson (1984: 300 as Parmelia exasperatula)
- Melanohalea infumata (Nyl.) O. Blanco et al. - Hansen (1978: 11 as Parmelia infumata), Hansen (1978b: 15 as Parmelia infumata), Hansen (1978: 57 as Parmelia infumata), Thomson (1984: 304 as Parmelia infumata), Alstrup et al. (2000: 11 as Melanelia infumata), Hansen (2002: 115), Hansen (2005: 41), Hansen (2008: 29 as Melanelia infumata), Hansen (2008: 405 as Melanelia infumata)
- Melanohalea olivacea (L.) O. Blanco et al. - Alstrup (1977: 116 as Melanelia olivacea), Thomson (1984: 306 as Melanelia olivacea)
- Melanohalea septentrionalis (Lynge) O. Blanco et al. - Hansen (1978: 11 as Parmelia septentrionalis), Thomson (1984: 311 as Parmelia septentrionalis)
- Micarea assimilata (Nyl.) Coppins - Thomson (1997: 413), Hansen (2005: 41)
- Micarea crassipes (Th. Fr.) Coppins - Thomson (1997: 414)
- Micarea denigrata (Fr.) Hedl. - Thomson (1997: 415 as Micarea denigrata)
- Micarea incrassata Hedl. - Thomson (1997: 416), Alstrup et al. (2000: 12), Hansen (2002: 9)
- Micarea melaena (Nyl.) Hedl. - Thomson (1997: 419)
- Micarea turfosa (A. Massal.) Du Rietz - Thomson (1997: 420)
- Miriquidica atrofulva (Sommerf.) A. J. Schwab & Rambold - Hansen (1999: 8), Hansen (2002: 9), Hansen (2005: 41)
- Miriquidica deusta (Stenh.) Hertel & Rambold - Alstrup et al. (2000: 12)
- Miriquidica garovaglioi (Schaer.) Hertel & Rambold - Alstrup et al. (2000: 12), Hansen (2002: 9), Hansen (2002: 115), Hansen (2005: 41), Hansen (2008: 405)
- Miriquidica leucophaea (Flörke ex Rabenh.) Hertel & Rambold - Hansen (1978b: 15 as Lecidea leucophaea), Thomson (1997: 359 as Lecidea leucophaea), Hansen (2002: 9), Hansen (2003: 152)
- Miriquidica lulensis (Hellb.) Hertel & Rambold - Thomson (1997: 363 Lecidea lulensis), Alstrup et al. (2000: 12)
- Miriquidica nigroleprosa (Vain.) Hertel & Rambold - Hansen (1983: 492 as Lecidea nigroleprosa), Hansen (1999: 8), Hansen (2005: 41)
- Miriquidica picea (Lynge) xxx - Thomson (1997: 371 as Lecidea picea)
- Montanelia tominii (Oxner) Divakar, A. Crespo, Wedin & Essl. - Hansen (1984: 310 as Parmelia substygia), Thomson (1984: 317 as Parmelia substygia)
- Mycobilimbia berengeriana (A. Massal.) Hafellner & V. Wirth - Sarrión et al. (2003: 2)
- Mycobilimbia hypnorum (Lib.) Kalb & Hafellner - Alstrup et al. (2000: 12), Hansen (2006: 2)
- Mycobilimbia obscurata (Sommerf.) Rehm - Hansen (2004: 87)
- Mycobilimbia pilularis (Körb.) Hafellner & Türk - Thomson (1997: 110 as Bacidia sphaeroides)
- Mycobilimbia tetramera (De Not.) Vitik. et al. - Alstrup et al. (2000: 12)
- Mycoblastus affinis (Schaer.) T. Schauer - Hansen (2003: 152)
- Mycoblastus alpinus (Fr.) Kernst. - Thomson (1997: 425), Hansen (2002: 9)
- Mycoblastus sanguinarius (L.) Norman - Thomson (1997: 426)
- Mycoblastus tornoensis (Nyl.) Anderson - Daniels et al. (1985: 56)
- Myriolecis albescens (Hoffm.) Sliwa, Zhao Xin & Lumbsch - Hansen (1978: 10 as Lecanora albescens)
- Myriolecis behringii (Nyl.) Hafellner - Hansen (1983: 177 as Lecanora behringii), Thomson (1997: 270 as Lecanora behringii), Hansen (2002: 113 as Lecanora behringii)
- Myriolecis thuleana (Poelt) Sliwa, Zhao Xin & Lumbsch - Thomson (1997: 44 as Arctopeltis thuleana), Hansen (2005: 39 as Arctopeltis thuleana), Hansen (2006: 36 as Arctopeltis thuleana)
- Myxobilimbia lobulata (Sommerf.) Hafellner - Alstrup et al. (2000: 12 as Mycobilimbia lobulata), Hansen (2002: 9), Hansen (2002: 115 as Mycobilimbia lobulata), Hansen (2005: 41)
- Nephroma arcticum (L.) Torss. - Hansen (1978: 11), Hansen (1978b: 15), Thomson (1984: 277), Hansen (2002: 9)
- Nephroma bellum (Spreng.) Tuck. - Hansen (1978: 11), Thomson (1984: 278)
- Nephroma expallidum (Nyl.) Nyl. - Hansen (1978: 11), Thomson (1984: 279), Hansen (2008: 299), Hansen (2008: 405)
- Nephroma isidiosum (Nyl.) Gyeln. - Thomson (1984: 281)
- Nephroma laevigatum Ach. - Hansen (1978b: 15),
- Nephroma parile (Ach.) Ach. - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Thomson (1984: 282), Hansen (2002: 9)
- Nephroma resupinatum (L.) Ach. - Thomson (1984: 283)
- Nephromopsis cucullata (Bellardi) Divakar, A. Crespo & Lumbsch - Hansen (1978: 9 as Cetraria cucullata), Hansen (1978b: 13 as Cetraria cucullata), Hansen (1983: 177 as Cetraria cucullata), Hansen (1978: 57 as Cetraria cucullata), Thomson (1984: 76 as Cetraria cucullata), Hansen (1999: 8 as Flavocetraria cucullata), Alstrup et al. (2000: 9 as Flavocetraria cucullata), Hansen (2002: 112 as Flavocetraria cucullata), Hansen (2005: 40 as Flavocetraria cucullata), Hansen (2008: 298 as Flavocetraria cucullata), Hansen (2008: 403 as Flavocetraria cucullata)
- Nodobryoria subdivergens (Å. E. Dahl) Common & Brodo - Thomson (1984: 67 as Bryoria subdivergens)
- Obryzum corniculatum (Hoffm.) Wallr. - Alstrup et al. (2000: 11 as Leptogium corniculatum)
- Ochrolechia alboflavescens (Wulfen) Zahlbr. - Hansen (1978: 11)
- Ochrolechia androgyna (Hoffm.) Arnold - Thomson (1997: 430), Hansen (2002: 115)
- Ochrolechia frigida (Sw.) Lynge - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Hansen (1983: 177), Thomson (1997: 431), Hansen (1999: 8), Alstrup et al. (2000: 12), Hansen (2002: 9), Hansen (2002: 115), Hansen (2005: 41), Hansen (2008: 299), Hansen (2008: 405)
- Ochrolechia geminipara (Th. Fr.) Vain. - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57)
- Ochrolechia grimmiae Lynge - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Hansen (1984: 309), Hansen (1986: 183), Thomson (1997: 432), Hansen (2002: 9), Hansen (2005: 41)
- Ochrolechia inaequatula (Nyl.) Zahlbr. - Thomson (1997: 434), Hansen (2005: 41)
- Ochrolechia lapuünsis (Räsänen) Räsänen - Hansen (1978b: 15), Hansen (1978: 57), Hansen (2002: 9), Hansen (2002: 115), Hansen (2005: 41), Hansen (2008: 405)
- Ochrolechia upsaliensis (L.) A. Massal. - Hansen (1978: 11), Thomson (1997: 436), Alstrup et al. (2000: 12), Hansen (2002: 115), Hansen (2008: 405)
- Ophioparma lapponica (Räsänen) Hafellner & R. W. Rogers - Thomson (1997: 440)
- Ophioparma ventosa (L.) Norman - Hansen (1978: 10 as Haematomma ventosum), Hansen (1978b: 14 as Haematomma ventosum), Hansen (1978: 57 as Haematomma ventosum), Hansen (2002: 9), Hansen (2002: 116), Hansen (2005: 41), Hansen (2008: 405)
- Orphniospora moriopsis (A. Massal.) D. Hawksw. - Körber (1874: 81 as Orphniospora groenlandica Protologue), Hansen (1978: 9 as Buellia atrata), Hansen (1978b: 13 as Buellia atrata), Hansen (1978: 57 as Buellia atrata), Hansen (1983: 177 as Orphniospora atrata), Thomson (1997: 441), Hansen (1999: 8), Hansen (2002: 9), Hansen (2002: 116), Hansen (2004: 15), Hansen (2005: 41)
- Oxneriaria mashiginensis (Zahlbr.) S. Y. Kondr. & Lokös - Thomson (1997: 80 as Aspicilia mashiginensis), Alstrup et al. (2000: 5 as Aspicilia bennettii), Hansen (2002: 108 as Aspicilia mashiginensis)
- Oxneriaria nikrapensis (Darb.) S. Y. Kondr. & Lokös - Alstrup et al. (2000: 5 as Aspicilia nikrapensis)
- Oxneriaria supertegens (Arnold) S. Y. Kondr. & Lokös - Hansen (2003: 150 as Aspicilia supertegens)
- Megaspora verrucosa (Ach.) B. Abbott & A. Nordin - Thomson (1997: 443 as Pachyospora verrucosa)
- Pachypeltis castellana (Räsänen) Søchting, Frödén & Arup - Hansen, Poelt & Søchting (1987: 21 as Caloplaca castellana), Hansen (1999: 8 as Caloplaca castellana), Alstrup et al. (2000: 7 as Caloplaca castellana on Rhizocarpon geminatum, Placynthium asperellum, Placynthium nigrum), Hansen (2002: 7 as Caloplaca castellana), Hansen (2002: 109 as Caloplaca castellana), Hansen (2005: 40 as Caloplaca castellana), Hansen (2006: 37 as Caloplaca castellana), Hansen (2008: 401 as Caloplaca castellana)
- Pachypeltis invadens (Lynge) Søchting, Frödén & Arup - Thomson (1997: 165 as Caloplaca invadens)
- Pannaria hookeri (Borr. ex Sm.) Nyl. - Hansen (1978b: 15), Hansen (1978: 57), Thomson (1984: 293), Alstrup et al. (2000: 12), Hansen (2002: 9), Hansen (2002: 116)
- Pannaria pezizoides (Web.) Trev. - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Thomson (1984: 294), Alstrup et al. (2000: 12), Hansen (2002: 9), Hansen (2002: 116)
- Parmelia fraudans (Nyl.) Nyl. - Thomson (1984: 302)
- Parmelia omphalodes (L.) Ach. - Alstrup (1977: 116), Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Thomson (1984: 308), Hansen (2002: 116), Hansen (2005: 41)
- Parmelia saxatilis (L.) Ach. - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Hansen (1983: 177), Thomson (1984: 310), Hansen (2002: 9), Hansen (2002: 116), Hansen (2005: 41), Hansen (2008: 299)
- Parmelia sulcata Taylor - Alstrup (1977: 116), Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Hansen (1983: 177), Thomson (1984: 318), Hansen (2002: 9), Hansen (2002: 116), Hansen (2005: 41)
- Parmeliella arctophila (Th. Fr.) Malme - Thomson (1984: 320)
- Parmeliella praetermissa (Nyl.) James - Thomson (1984: 320)
- Parmeliella triptophylla (Ach.) Müll. - Thomson (1984: 321), Alstrup et al. (2000: 12), Hansen (2002: 116), Hansen (2005: 41), Hansen (2008: 299)
- Parmeliopsis ambigua (Wulf.) Nyl. - Alstrup (1977: 116), Hansen (1978: 11), Hansen (1978b: 15), Thomson (1984: 325)
- Parmeliopsis hyperopta (Ach.) Arn. - Hansen (1978: 11), Hansen (1978b: 15), Thomson (1984: 326)
- Peltigera aphthosa (L.) Willd. - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Thomson (1984: 329), Alstrup et al. (2000: 12), Hansen (2002: 116)
- Peltigera britannica (Gyeln.) Holtan-Hartwig & Tønsberg - Alstrup et al. (2000: 12)
- Peltigera canina (L.) Willd. - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Hansen (2002: 9)
- Peltigera canina (L.) Willd. f. sorediata Schaer. - Thomson (1984: 332)
- Peltigera collina (Ach.) Schrad. - Hansen (1978: 11), Thomson (1984: 334)
- Peltigera didactyla (With.) J. R. Laundon - Hansen (1978: 11 as Peltigera spuria), Hansen (1978b: 15 as Peltigera spuria), Hansen (1978: 57 as Peltigera spuria), Alstrup et al. (2000: 12), Hansen (2002: 9), Hansen (2002: 116), Hansen (2005: 41), Hansen (2008: 299), Hansen (2008: 405)
- Peltigera lepidophora (Nyl.) Vain. - Hansen (1978b: 15), Hansen (1978: 57), Thomson (1984: 338), Alstrup et al. (2000: 12), Hansen (2002: 9), Hansen (2002: 116), Hansen (2005: 41), Hansen (2008: 405)
- Peltigera leucophlebia (Nyl.) Gyeln. - Hansen (1983: 177), Thomson (1984: 330 as Peltigera aphthosa var. leucophlebia), Alstrup et al. (2000: 12), Hansen (2002: 116), Hansen (2005: 41), Hansen (2008: 30), Hansen (2008: 299), Hansen (2008: 405)
- Peltigera malacea (Ach.) Funck. - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Thomson (1984: 339), Hansen (2002: 19), Hansen (2002: 116), Hansen (2005: 41)
- Peltigera membranacea (Ach.) Nyl. - Thomson (1984: 340), Hansen (2006: 3)
- Peltigera occidentalis (Dahl.) Krist. - Thomson (1984: 341), Hansen (2004: 87)
- Peltigera polydactyla (Neck.) Hoffm. - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Thomson (1984: 343)
- Peltigera rufescens (Weiss) Humb. - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Hansen (1983: 177), Thomson (1984: 333 as Peltigera canina var. rufescens), Alstrup et al. (2000: 12), Hansen (2002: 10), Hansen (2002: 116), Hansen (2005: 41), Hansen (2008: 30), Hansen (2008: 299), Hansen (2008: 406)
- Peltigera scabrosa Th. Fr. - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Hansen (1983: 177), Thomson (1984: 344), Alstrup et al. (2000: 12), Hansen (2002: 10), Hansen (2005: 41)
- Peltigera venosa (L.) Hoffm. - Hansen (1978: 11), Hansen (1978b: 15), Hansen (1978: 57), Thomson (1984: 345), Alstrup et al. (2000: 12), Hansen (2002: 116), Hansen (2008: 299)
- Peridiothelia fuliguncta (Norman) D. Hawksw. - Hansen (2003: 152)
- Pertusaria atra Lynge - Poelt (1985: 94), Thomson (1997: 448)
- Pertusaria bryontha (Ach.) Nyl. - Hansen (1978: 11), Thomson (1997: 449)
- Pertusaria carneopallida (Nyl.) Anzi ex Nyl. - Thomson (1997: 451)
- Pertusaria chiodectonoides Bagl. ex A. Massal. - Alstrup et al. (2000: 12)
- Pertusaria coriacea (Th. Fr.) Th. Fr. - Thomson (1997: 452), Alstrup et al. (2000: 12), Hansen (2002: 10), Hansen (2002: 117), Hansen (2005: 41), Hansen (2008: 406)
- Pertusaria geminipara (Th. Fr.) C. Knight ex Brodo - Thomson (1997: 455), Hansen (2002: 10), Hansen (2002: 117), Hansen (2005: 41), Hansen (2008: 300)
- Pertusaria glomerata (Ach.) Schaer. - Poelt (1985: 94), Alstrup et al. (2000: 13)
- Pertusaria octomela (Norman) Erichsen - Thomson (1997: 457), Hansen (2004: 87)
- Pertusaria oculata (Dicks.) Th. Fr. - Hansen (1978: 11), Hansen (1978b: 16), Hansen (1978: 57), Thomson (1997: 458), Hansen (1999: 8), Alstrup et al. (2000: 13), Hansen (2002: 10), Hansen (2002: 117), Hansen (2005: 41), Hansen (2008: 406)
- Pertusaria sommerfeltii (Sommerf.) Flörke - Thomson (1997: 461), Hansen (2004: 3)
- Pertusaria trochiscea Norman - Hansen (2004: 3)
- Phaeocalicium compressulum (Nyl. ex Vain.) A. F. W. Schmidt - Thomson (1997: 465)
- Phaeophyscia constipata (Nyl.) Moberg - Thomson (1984: 347, Moberg & Hansen (1986: 4 ), Alstrup et al. (2000: 13), Hansen (2005: 41)
- Phaeophyscia endococcina (Körb.) Moberg - Thomson (1984: 348, Moberg & Hansen (1986:5), Hansen (2005: 41)
- Phaeophyscia kairamoi (Vain.) Moberg - Moberg & Hansen (1986: 6), Alstrup et al. (2000: 13)
- Phaeophyscia nigricans (Flörke) Moberg - Moberg & Hansen (1986: 7)
- Phaeophyscia orbicularis (Neck.) Moberg - Hansen (1978: 12 as Physcia orbicularis), Moberg & Hansen (1986: 7)
- Phaeophyscia sciastra (Ach.) Moberg - Hansen (1978: 12), Hansen (1978b: 16 as Physcia sciastra), Hansen (1978: 57), Thomson (1984: 349), Moberg & Hansen (1986: 8), Alstrup et al. (2000: 13), Hansen (2002: 10), Hansen (2002: 117), Hansen (2005: 41), Hansen (2008: 30)
- Phaeorrhiza nimbosa (Fr.) H. Mayrhofer & Poelt - Hansen (1978b: 16 as Rinodina nimbosa), Hansen (1978: 57 as Rinodina nimbosa), Thomson (1997: 467), Alstrup et al. (2000: 13), Hansen (2002: 117)
- Phaeorrhiza sareptana (Tomin) H. Mayrhofer & Poelt var. sareptana - Thomson (1997: 468), Alstrup et al. (2000: 13)
- Phaeorrhiza sareptana (Tomin) H. Mayrhofer & Poelt var. sphaerocarpa (Th. Fr.) H. Mayrhofer & Poelt - Hansen (2002: 117)
- Phylliscum demangeonii (Moug. & Mont in Mont.) Nyl. - Hansen (1984: 311), Hansen (1986: 183), Thomson (1997: 469), Hansen (1999: 8), Hansen (2002: 10)
- Physcia aipolia (Humb.) Fürnr. - Alstrup (1977: 116), Hansen (1978: 12), Hansen (1978b: 16), Thomson (1984: 353), Moberg & Hansen (1986: 8)
- Physcia caesia (Hoffm.) Fürnr. - Alstrup (1977: 116), Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Thomson (1984: 354), Moberg & Hansen (1986: 9), Alstrup et al. (2000: 13), Hansen (2002: 10), Hansen (2002: 117), Hansen (2004: 15), Hansen (2005: 41), Hansen (2008: 30), Hansen (2008: 300), Hansen (2008: 406)
- Physcia dubia (Hoffm.) Lettau - Alstrup (1977: 116), Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Hansen (1983: 177), Thomson (1984: 355), Moberg & Hansen (1986: 10), Alstrup et al. (2000: 13), Hansen (2002: 10), Hansen (2002: 117), Hansen (2005: 41), Hansen (2008: 406)
- Physcia magnusonii Frey - Moberg & Hansen (1986: 11)
- Physcia phaea (Tuck.) J. W. Thomson - Thomson (1984: 356), Moberg & Hansen (1986: 12), Hansen (2002: 10)
- Physcia subobscura Nyl. - Hansen (1978: 12), Thomson (1984: 357)
- Physcia tenella (Scop.) DC. - Alstrup (1977: 116), Moberg & Hansen (1986: 12), Hansen (2005: 42)
- Physconia detersa (Nyl.) Poelt - Thomson (1984: 359), Moberg & Hansen (1986: 13), Hansen (1999: 8)
- Physconia enteroxantha (Nyl.) Poelt - Moberg & Hansen (1986: 14)
- Physconia muscigena (Ach.) Poelt - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Hansen (1983: 177), Thomson (1984: 360), Moberg & Hansen (1986: 14), Alstrup et al. (2000: 13), Hansen (2002: 10), Hansen (2002: 117), Hansen (2005: 42), Hansen (2008: 30), Hansen (2008: 300), Hansen (2008: 406)
- Physconia perisidiosa (Erichs.) Moberg - Moberg & Hansen (1986: 15)
- Pilophorus cereolus (Ach.) Th. Fr. - Alstrup (1976: 97), Thomson (1984: 362)
- Pilophorus dovrensis (Nyl.) Timdal, Hertel & Rambold - Hansen (2002: 10)
- Pilophorus robustus Th. Fr. - Alstrup (1976: 97), Thomson (1984: 363)
- Placidiopsis minor R. C. Harris - Alstrup (1991: 89)
- Placidiopsis pseudocinerea Breuss - Alstrup et al. (2000: 13), Hansen (2008: 406)
- Placidium lachneum (Ach.) xxx - Hansen (1982: 13 as Catapyrenium lachneum), Thomson (1984: 217 as Dermatocarpon lachneum), Alstrup et al. (2000: 8 as Catapyrenium lachneum), Hansen (2002: 110 as Catapyrenium lachneum), Hansen (2005: 42), Hansen (2006: 37 as Catapyrenium lachneum)
- Placidium rufescens (Ach.) xxx - Hansen (1978: 10 as Dermatocarpon rufescens), Hansen (1978b: 14 as Dermatocarpon rufescens), Hansen (1978: 57 as Dermatocarpon rufescens)
- Placidium squamulosum (Ach.) Breuss - Alstrup et al. (2000: 8 as Catapyrenium squamulosum)
- Placopsis gelida (L.) Lindsay - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Thomson (1997: 472), Hansen (2002: 10)
- Placynthiella oligotropha (J.R. Laundon) Coppins & P. James - Daniels et al. (1985: 55 as Lecidea oligotropha), Thomson (1997: 474)
- Placynthiella uliginosa (Schrad.) Coppins & P. James - Thomson (1997: 475), Alstrup et al. (2000: 13)
- Placynthium asperellum (Ach.) Trevis. - Hansen (1978b: 16), Hansen (1978: 57), Alstrup et al. (2000: 13), Hansen (2002: 10), Hansen (2002: 117), Hansen (2005: 42), Hansen (2008: 406)
- Placynthium aspratile (Ach.) Henssen - Thomson (1984: 365)
- Placynthium filiforme (Garov.) M. Choisy - Alstrup et al. (2000: 13)
- Placynthium nigrum (Huds.) Gray - Alstrup et al. (2000: 13)
- Placynthium pannariellum (Nyl.) H. Magn. - Thomson (1984: 367), Alstrup et al. (2000: 13)
- Placynthium subradiatum (Nyl.) Arnold - Alstrup et al. (2000: 13)
- Placynthium tantaleum (Hepp) Hue - Hansen (2006: 2)
- Platismatia glauca (L.) W. L. Culb. & C. F. Culb. - Thomson (1984: 368)
- Pleopsidium chlorophanum (Wahlenb.) Zopf - Magnusson (1929: xx as Acarospora chlorophana), Hansen (1978: 9 as Acarospora chlorophana), Hansen (1978: 13 as Acarospora chlorophana), Hansen (1978: 57 as Acarospora chlorophana), Hansen (1983: 177 as Acarospora chlorophana), Thomson (1997: 22 as Acarospora chlorophana), Alstrup et al. (2000: 13), Hansen (2002: 117), Hansen (2005: 42), Hansen (2008: 30), Hansen (2008: 406)
- Pleopsidium flavum (Bellardi) Körb. - Magnusson (1935: 222 as Acarospora oxytona), Thomson (1997: 29 as Acarospora oxytona)
- Polyblastia bryophila Lönnr. - Thomson (1997: 477), Hansen (2002: 118)
- Polyblastia cupularis A. Massal. - Thomson (1997: 478), Alstrup et al. (2000: 13), Hansen (2002: 10)
- Polyblastia fuscoargillacea Anzi - Alstrup et al. (2000: 13)
- Polyblastia gothica Th. Fr. - Thomson (1997: 480)
- Polyblastia hyperborea Th. Fr. - Thomson (1997: 481)
- Polyblastia melaspora (Taylor) Zahlbr. - Thomson (1997: 480)
- Polyblastia peminosa (Nyl.) Zahlbr. - Alstrup et al. (2000: 13)
- Polyblastia schisticola Servit - Alstrup et al. (2000: 13 confirmed as accepted species in contrary to Santesson 1993)
- Polyblastia sendtneri Kremp. - Hansen (1986: 183), Alstrup et al. (2000: 13)
- Polyblastia septentrionalis Lynge - Thomson (1997: 482)
- Polyblastia terrestris Th. Fr. - Thomson (1997: 483), Hansen (2002: 118)
- Polyblastia theleodes (Sommerf.) Th. Fr. - Hansen (1978: 12), Thomson (1997: 484), Alstrup et al. (2000: 13)
- Polycauliona polycarpa (Hoffm.) Frödén, Arup & Søchting - Alstrup (1977: 116 as Xanthoria polycarpa)
- Polychidium muscicola (Sw.) Gray - Thomson (1984: 370), Hansen (2002: 10), Hansen (2005: 42), Hansen (2008: 406)
- Polysporina cyclocarpa (Anzi) Vezda - Kantvilas & Seppelt (2006: 109)
- Polysporina ferruginea (Lettau) M. Steiner ex Kantvilas - Alstrup et al. (2000: 13)
- Polysporina simplex (Borrer ex Hook.) Vezda - Hansen & Graff-Petersen (1986: 76), Thomson (1997: 486), Alstrup et al. (2000: 14), Hansen (2002: 10)
- Porocyphus coccodes Flot. ex Körb. - Hansen (2002: 10)
- Porocyphus dispersus Å.E. Dahl - Thomson (1997: 489)
- Porpidia cinereoatra (Ach.) Hertel & Knoph - Hansen (2004: 3)
- Porpidia contraponenda (Arnold) Knoph & Hertel - Alstrup et al. (2000: 13)
- Porpidia crustulata (Ach.) Hertel & Knoph - Hansen (2006: 3)
- Porpidia flavicunda (Ach.) Gowan - Hansen (1986: 177 as Huilia flavocaerulescens), Thomson (1997: 491), Thomson (1997: 492 Porpidia flavocoerulescens), Hansen (1999: 8), Alstrup et al. (2000: 13), Hansen (2002: 10 as Porpidia flavocoerulescens), Hansen (2002: 118 as Porpidia flavocoerulescens), Hansen (2005: 42 as Porpidia flavocaerulescens)
- Porpidia macrocarpa (DC.) Hertel & A.J. Schwab - Hansen (1978: 11 as Lecidea macrocarpa), Hansen (1978b: 15 as Lecidea macrocarpa), Hansen (2002: 10)
- Porpidia melinodes (Körb.) Gowan & Ahti - Hansen (1999: 8), Alstrup et al. (2000: 13), Hansen (2002: 10), Hansen (2008: 406)
- Porpidia speirea (Ach.) Kremp. - Hansen (2002: 118)
- Porpidia thomsonii Gowan - Hansen (2002: 10)
- Protoblastenia calva (Dicks.) Zahlbr. - Thomson (1997: 502), Hansen (2002: 118)
- Protoblastenia rupestris (Scop.) J. Steiner - Hansen (1978b: 16), Hansen (1978: 57), Thomson (1997: 503), Hansen (2008: 300), Hansen (2008: 406)
- Protoblastenia terricola (Anzi) Lynge - Thomson (1997: 503), Hansen (2002: 118)
- Protomicarea alpestris (Sommerf.) McCune - Thomson (1997: 324 as Lecidea alpestris)
- Protomicarea limosa (Ach.) Hafellner - Hansen (1978: 11 as Lecidea limosa), Thomson (1997: 361 as Lecidea limosa)
- Protopannaria pezizoides (Weber) P. M. Jørg. & S. Ekman - Hansen (2005: 42), Hansen (2008: 406)
- Protoparmelia badia (Hoffm.) Hafellner - Hansen (1978: 57 as Lecanora badia), Hansen (1978: 10 as Lecanora badia), Hansen (1978b: 14 as Lecanora badia), Thomson (1997: 269 as Lecanora badia), Hansen (2002: 118), Hansen (2002: 10), Hansen (2004: 15), Hansen (2005: 42), Hansen (2008: 406)
- Protoparmeliopsis muralis (Schreb.) M. Choisy - Hansen (1978: 10 as Lecanora muralis), Thomson (1997: 295 as Lecanora muralis), Hansen (1999: 8 as Lecanora muralis), Alstrup et al. (2000: 10 as Lecanora muralis)
- Protothelenella sphinctrinoidella (Nyl.) H. Mayrhofer & Poelt - Thomson (1997: 504)
- Protothelenella sphinctrinoides (Nyl.) H. Mayrhofer & Poelt - Thomson (1997: 505)
- Pseudephebe minuscula (Arnold) Brodo & D. Hawksw. - Hansen (1978: 9 as Alectoria minuscula), Hansen (1978b: 13 as Alectoria minuscula), Hansen (1978: 57 as Alectoria minuscula), Hansen (1983: 177), Thomson (1984: 373), Hansen & Graff-Petersen (1986: 76), Hansen (1999: 8), Hansen (2002: 10), Hansen (2002: 118), Hansen (2004: 15), Hansen (2005: 42), Hansen (2008: 30), Hansen (2008: 300), Hansen (2008: 407)
- Pseudephebe pubescens (L.) M. Choisy - Hansen (1978: 9 as Alectoria pubescens), Hansen (1978b: 13 as Alectoria pubescens), Hansen (1978: 57), Hansen (1983: 177), Thomson (1984: 374), Hansen (1999: 8), Hansen (2002: 10), Hansen (2002: 118), Hansen (2005: 42), Hansen (2008: 407)
- Pseudosagedia guentheri (Flot.) Hafellner & Kalb - Hansen (2006: 3)
- Psora decipiens (Hedw.) Hoffm. - Hansen (1978: 57 as Lecidea decipiens), Hansen (1978: 10 as Lecidea decipiens), Hansen (1978b: 15 as Lecidea decipiens), Thomson (1997: 507), Hansen (2002: 118), Hansen (2008: 300), Hansen (2008: 407)
- Psora globifera (Ach.) A. Massal. - Thomson (1997: 508)
- Psora rubiformis (Wahlenb. ex Ach.) Hook. - Hansen (1978: 11 as Lecidea rubiformis), Hansen (1978b: 15 as Lecidea rubiformis), Hansen (1978: 57 as Lecidea rubiformis), Thomson (1997: 511), Hansen (2002: 10), Hansen (2002: 118), Hansen (2005: 42), Hansen (2008: 407)
- Psora vallesiaca (Schaer.) Timdal - Hansen (2002: 118)
- Psorinia conglomerata (Ach.) Gotth. Schneid. - Thomson (1997: 513)
- Psoroma hypnorum (Vahl) Gray - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Thomson (1984: 375), Hansen (2002: 10), Hansen (2002: 118)
- Psoroma tenue Henssen var. tenue - Hansen (2008: 407)
- Psoroma tenue Henssen var. boreale Henssen - Hansen (2005: 42), Hansen (2008: 30)
- Psorotichia schaereri (A. Massal.) Arnold - Hansen (2004: 4)
- Psorula rufonigra (Tuck.) Gotth. Schneid. - Thomson (1997: 515), Hansen (2004: 88)
- Pycnothelia papillaria (Ehrh.) L. M. Dufour - Thomson (1984: 377)
- Pyrenopsidium iivaarense (Vain.) Forssell - Thomson (1997: 518)
- Pyrenopsis furfurea (Nyl.) Th. Fr. - Hansen (2002: 10)
- Pyrenopsis grumulifera Nyl. - Hansen (2004: 88)
- Pyrenopsis macrocarpa Å. E. Dahl - Thomson (1997: 517)
- Pyrenopsis myriospora Å. E. Dahl - Thomson (1997: 517)
- Racodium rupestre Pers. - Hansen (2004: 4)
- Ramboldia cinnabarina (Sommerf.) Kalb, Lumbsch & Elix - Thomson (1997: 336 as Lecidea cinnabarina)
- Rhexophiale rhexoblephara (Nyl.) Almq. - Thomson (1997: 575 as Sagiolechia rhexoblephara)
- Rhizocarpon alaxensis J. W. Thomson - Thomson (1997: 522)
- Rhizocarpon alpicola (Wahlenb.) Rabenh. - Thomson (1997: 522)
- Rhizocarpon anseris Lynge - Hansen (2002: 118)
- Rhizocarpon arctogenum Gelting - Thomson (1997: 523)
- Rhizocarpon badioatrum (Flörke ex Spreng.) Th. Fr. - Hansen (1978: 12), Thomson (1997: 524), Hansen (2002: 10)
- Rhizocarpon bolanderi (Tuck.) Herre - Thomson (1997: 526), Hansen (2002: 10), Hansen (2005: 42)
- Rhizocarpon bryonthae Poelt - Poelt (1985: 94 Protologue) Type in Graz, Austria GZU
- Rhizocarpon chionophilum Th. Fr. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57)
- Rhizocarpon cinereovirens (Müll. Arg.) Vain. - Thomson (1997: 528)
- Rhizocarpon cleptophilum Alstrup & E. S. Hansen - Alstrup & Hansen (2001: 46 Protologue) Type
- Rhizocarpon concentricum (Davies) Beltr. - Thomson (1997: 529)
- Rhizocarpon copelandii (Körb.) Th. Fr. - Hansen (1978: 12), Hansen (1983: 178), Thomson (1997: 531), Hansen (2002: 10), Hansen (2002: 119)
- Rhizocarpon disporum (Nägeli ex Hepp) Müll. Arg. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Hansen (1983: 178), Hansen (2002: 10), Hansen (2002: 119), Hansen (2005: 42)
- Rhizocarpon distinctum Th. Fr. - Hansen (1978: 12), Thomson (1997: 532)
- Rhizocarpon eupetraeoides (Nyl.) Blomb. & Forssell - Thomson (1997: 532), Hansen (2005: 42)
- Rhizocarpon eupetraeum (Nyl.) Arnold - Hansen (1978: 12), Thomson (1997: 533)
- Rhizocarpon expallescens Th. Fr. - Thomson (1997: 535)
- Rhizocarpon ferax H. Magn. - Thomson (1997: 535), Hansen (2006: 3)
- Rhizocarpon geminatum Körb. - Thomson (1997: 537), Hansen (1999: 8), Hansen (2002: 10), Hansen (2002: 119), Hansen (2005: 42), Hansen (2008: 407)
- Rhizocarpon geographicum (L.) DC. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Hansen (1983: 178), Thomson (1997: 538), Hansen (2002: 11), Hansen (2002: 119), Hansen (2004: 15), Hansen (2005: 42), Hansen (2008: 300), Hansen (2008: 407)
- Rhizocarpon grande (Flörke ex Flot.) Arnold - Hansen (1978: 12), Thomson (1997: 539), Hansen (1999: 8), Hansen (2002: 11), Hansen (2002: 119), Hansen (2005: 42)
- Rhizocarpon groenlandicum Lynge - Lynge (1932: 23 Protologue) Type
- Rhizocarpon hochstetteri (Körb.) Vain. - Hansen (1978: 12), Thomson (1997: 540)
- Rhizocarpon inarense (Vain.) Vain. - Thomson (1997: 541), Hansen (1999: 8), Hansen (2002: 11), Hansen (2002: 119), Hansen (2004: 15), Hansen (2005: 42)
- Rhizocarpon intermediellum Räsänen - Thomson (1997: 542), Hansen (2002: 119)
- Rhizocarpon jemtlandicum Malme - Hansen (1978: 12), Thomson (1997: 542), Hansen (2002: 11), Hansen (2005: 42), Hansen (2008: 31), Hansen (2008: 407)
- Rhizocarpon macrosporum Räsänen - Thomson (1997: 543)
- Rhizocarpon microsporum Lynge - Thomson (1997: 545)
- Rhizocarpon narssaqense Alstrup - Alstrup (xx: xx Protologue) Type
- Rhizocarpon norvegicum Räsänen - Thomson (1997: 544), Hansen (2002: 11)
- Rhizocarpon obscuratum (Ach.) A. Massal. - Lynge (1932: 17), Hansen (1978: 12), Thomson (1997: 545)
- Rhizocarpon petraeum (Wulfen) A. Massal. - Hansen (2004: 88)
- Rhizocarpon polycarpum (Hepp) Th. Fr. - Hansen (1978: 12), Thomson (1997: 546)
- Rhizocarpon praebadium (Nyl.) Zahlbr. - Thomson (1997: 546), Hansen (1999: 8), Hansen (2002: 119), Hansen (2005: 42)
- Rhizocarpon pusillum Runemark - Hansen (1984: 311), Thomson (1997: 547), Hansen (2002: 119), Hansen (2005: 42), Hansen (2008: 407)
- Rhizocarpon riparium Räsänen - Thomson (1997: 548)
- Rhizocarpon rittokense (Hellb.) Th. Fr. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Thomson (1997: 549), Hansen (2002: 11)
- Rhizocarpon subareolatum E. S. Hansen - Hansen (2007: 358 Protologue) Type in C
- Rhizocarpon subtile Runemark - Thomson (1997: 550)
- Rhizocarpon superficiale (Schaer.) Malme - Hansen (1978: 12 as Rhizocarpon crystalligenum), Hansen (1983: 178), Thomson (1997: 551), Hansen (2002: 11), Hansen (2002: 119), Hansen (2005: 42), Hansen (2008: 407)
- Rhizoplaca chrysoleuca (Sm.) Zopf - Hansen (1978: 10 as Lecanora rubina), Thomson (1997: 554)
- Rhizoplaca melanophthalma (Ramond) Leuck. & Poelt or (DC.) Leuckert - Hansen (1978: 10 as Lecanora melanophthalma), Hansen (1978b: 14 as Lecanora melanophthalma), Hansen (1978: 57 as Lecanora melanophthalma), Hansen (1983: 178), Thomson (1997: 555), Hansen (2002: 11), Hansen (2002: 119), Hansen (2005: 42), Hansen (2008: 31), Hansen (2008: 407)
- Rinodina archaea (Ach.) Arnold - Hansen (2002: 119), Hansen (2008: 407)
- Rinodina arnoldii Mayrh. & Poelt - Thomson (1997: 559)
- Rinodina balanina (Wahlenb.) Vain. - Thomson (1997: 560)
- Rinodina bischoffii (Hepp.) A. Massal. - Hansen & Graff-Petersen (1986: 76), Thomson (1997: 561)
- Rinodina cacuminum (Th. Fr.) Malme - Hansen (1984: 311), Thomson (1997: 561), Hansen (2002: 120)
- Rinodina calcigena (Th. Fr.) Lynge - Thomson (1997: 562)
- Rinodina castanomela (Nyl.) Arnold - Hansen (1984: 312)
- Rinodina conradii Körb. - Daniels et al. (1985: 56), Thomson (1997: 563)
- Rinodina diskoensis Sheard - Thomson (1997: 563)
- Rinodina endophragmia J.M. Lamb - Thomson (1997: 564)
- Rinodina granulans Vain. - Hansen (2004: 4)
- Rinodina lecideoides (Nyl.) Vain. - Alstrup (1977: 116
- Rinodina lyngei Sheard - Thomson (1997: 565)
- Rinodina milvina (Wahlenb. in Ach.) Th. Fr. - Hansen (1978: 12), Thomson (1997: 565)
- Rinodina mniaraea (Ach.) Körb. - Thomson (1997: 567), Hansen (2002: 120), Hansen (2008: 300), Hansen (2008: 408)
- Rinodina mucronatula H. Magn. - Hansen (1986: 184)
- Rinodina notabilis (Lynge) Sheard - Thomson (1997: 134 as Buellia notabilis)
- Rinodina ochracea Lynge - Lynge (1937: 187 Protologue), Thomson (1997: 569) Type
- Rinodina olivaceobrunnea C. W. Dodge & G. E. Baker - Magnusson (1947: 309 as Rinodina arctica Protologue), Hansen (2008: 408) Type in Uppsala, Finland UPS
- Rinodina parasitica H. Mayrhofer & Poelt - Hansen (2003: 152)
- Rinodina pyrina (Ach.) Arnold. - Alstrup (1977: 116)
- Rinodina rinodinoides (Anzi) H. Mayrhofer & Scheid. - Hansen (2003: 152)
- Rinodina roscida (Sommerf.) Arnold - Thomson (1997: 569), Hansen (2002: 120), Hansen (2008: 408)
- Rinodina soredicola Degel. - Hansen (1986: 184)
- Rinodina subobscura H. Magn. - Alstrup (1977: 116)
- Rinodina turfacea (Wahlenb.) Körb. - Hansen (1978b: 16), Hansen (1978: 57), Alstrup (1977: 116), Hansen (1978: 12), Hansen (1983: 178), Poelt (1985: 94), Thomson (1997: 571), Hansen (2002: 11), Hansen (2002: 120), Hansen (2005: 42), Hansen (2008: 31), Hansen (2008: 408)
- Ropalospora lugubris (Sommerf.) Poelt - Thomson (1997: 571)
- Rufoplaca arenaria (Pers.) Müll. Arg. - Hansen, Poelt & Søchting (1987: 19 as Caloplaca arenaria), Hansen (2002: 7 as Caloplaca arenaria)
- Rusavskia elegans (Link) S.Y. Kondr. & Kärnefelt var. elegans - Hansen (1978: 12 as Xanthoria elegans var. elegans), Hansen (1978b: 16 as Xanthoria elegans var. elegans), Hansen (1978: 57 as Xanthoria elegans var. elegans), Hansen (1983: 178 as Xanthoria elegans var. elegans as Xanthoria elegans var. elegans), Thomson (1984: 484 as Xanthoria elegans var. elegans), Hansen (1999: 8 as Xanthoria elegans var. elegans), Hansen (2002: 12 as Xanthoria elegans var. elegans), Hansen (2002: 122 as Xanthoria elegans var. elegans), Hansen (2004: 15), Hansen (2005: 43), Hansen (2008: 301), Hansen (2008: 409)
- Sagedia mastrucata (Wahlenb.) A. Nordin, Savic & Tibell - Alstrup et al. (2000: 5 as Aspicilia mastrucata), Hansen (2002: 7 as Aspicilia mastrucata), Hansen (2002: 108 as Aspicilia mastrucata), Hansen (2005: 39 as Aspicilia mastrucata)
- Sarcogyne clavus (DC. in Lam. & DC.) Kremp. - Thomson (1997: 577)
- Sarcogyne groenlandica H. Magn. - Thomson (1997: 577)
- Sarcogyne lapponica (Ach. ex Schaer.) K. Knudsen & Kocourk. - Magnusson (1935: 222 as Acarospora lapponica), Alstrup et al. (2000: 13 on Lecidea plana)
- Sarcogyne regularis Körb. - Thomson (1997: 579), Hansen (2008: 31)
- Sarcogyne rugosa Lynge - Lynge (1937: xx Protologue) Type
- Schadonia alpina Körb. - Thomson (1997: 580)
- Schadonia fecunda (Th. Fr.) Vezda & Poelt - Thomson (1997: 581)
- Schaereria cinereorufa (Schaer.) Th. Fr. - Thomson (1997: 582), Hansen (2004: 88)
- Schaereria endocyanea (Stirt.) Hertel & Gotth. Schneid. - Thomson (1997: 583)
- Schaereria fuscocinerea (Nyl.) Clauzade & Cl. Roux - Thomson (1997: 584 as Schaereria tenebrosa), Hansen (2004: 4)
- Scoliciosporum umbrinum (Ach.) Arnold - Thomson (1997: 585)
- Scytinium lichenoides (L.) Zahlbr. - Hansen (1978: 11 as Leptogium lichenoides), Thomson (1984: 257 as Leptogium lichenoides), Alstrup et al. (2000: 11 as Leptogium lichenoides), Hansen (2002: 114 as Leptogium lichenoides), Hansen (2008: 298 as Leptogium lichenoides), Hansen (2008: 29 as Leptogium lichenoides)
- Servitia inconspicuum (Lynge) M. S. Christ. & Alstrup - Lynge (1940: 17 as Dermatocarpon inconspicuum Protologue) Type in Oslo, Norway O
- Silobia scabrida (Hedl. ex. H. Magn.) M. Westb. & Wedin - Magnusson (1935: 225 as Acarospora scabrida), Thomson (1997: 32 as Acarospora scabrida), Alstrup et al. (2000: 5 as Acarospora scabrida), Alstrup et al. (2009: 5 as Acarospora scabrida)
- Silobia smaragdula (Wahlenb. in Ach.) M. Westb. & Wedin - Magnusson (1935: 223 as Acarospora fusca), Magnusson (1935: 223 as Acarospora smaragdula), Magnusson (1935: 224 as Acarospora scyphulifera), Hansen (1978: 9 as Acarospora smaragdula), Hansen (1978b: 13 as Acarospora smaragdula), Hansen (1978: 57 as Acarospora smaragdula), Thomson (1997: 34 as Acarospora smaragdula), Alstrup et al. (2000: 5 as Acarospora smaragdula), Hansen (2002: 6 as Acarospora smaragdula), Hansen (2002: 107 as Acarospora smaragdula), Hansen (2008: 400 as Acarospora smaragdula), Alstrup et al. (2009: 5 as Acarospora fusca), Alstrup et al. (2009: 5 as Acarospora smaragdula)
- Siphula ceratites (Wahlenb.) Fr. - Thomson (1984: 384)
- Solorina bispora Nyl. - Hansen (1978b: 16), Hansen (1978: 57), Hansen (1983: 178), Thomson (1984: 386), Hansen (2002: 120), Hansen (2005: 42), Hansen (2008: 31), Hansen (2008: 408)
- Solorina crocea (L.) Ach. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Thomson (1984: 387), Hansen (2002: 11), Hansen (2002: 120), Hansen (2005: 42), Hansen (2008: 300), Hansen (2008: 408)
- Solorina octospora (Arn.) Arn. - Thomson (1984: 389), Hansen (2008: 408)
- Solorina saccata (L.) Ach. - Thomson (1984: 390), Hansen (2002: 120), Hansen (2008: 300), Hansen (2008: 31)
- Solorina spongiosa (Sm.) Anzi - Thomson (1984: 391), Hansen (2005: 42), Hansen (2008: 31)
- Sphaerophorus fragilis (L.) Pers. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Hansen (1982: 12), Hansen (1983: 178), Thomson (1984: 393), Hansen (2002: 11), Hansen (2005: 42), Hansen (2008: 301), Hansen (2008: 408)
- Sphaerophorus globosus (Huds.) Vain. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Hansen (1982: 12), Hansen (1983: 178), Thomson (1984: 394), Hansen (2002: 11), Hansen (2002: 120), Hansen (2005: 42), Hansen (2008: 408)
- Spilonema revertens Nyl. - Hansen (2002: 11)
- Sporastatia polyspora (Nyl.) Grummann - Thomson (1997: 588), Hansen (2005: 42)
- Sporastatia testudinea (Ach.) A. Massal. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1983: 178), Thomson (1997: 589), Hansen (1999: 8), Hansen (2002: 11), Hansen (2002: 120), Hansen (2004: 15), Hansen (2005: 42), Hansen (2008: 408)
- Sporodictyon cruentum (Körb.) Körb. - Thomson (1997: 477 as Polyblastia cruenta)
- Squamarina lentigera (Weber) Poelt - Hansen (1983: 492)
- Staurothele arctica Lynge - Lynge (1937: 17 Protologue), Thomson (1997: 591) Type in Oslo, Norway O
- Staurothele areolata (Ach.) Lettau - Thomson (1997: 592), Hansen (2002: 11)
- Staurothele drummondii (Tuck.) Tuck. - Thomson (1997: 595)
- Staurothele fissa (Taylor) Zwackh - Thomson (1997: 596), Hansen (2002: 120), Hansen (2003: 152)
- Staurothele fuscocuprea (Nyl.) Zschacke - Hansen (1982: 13)
- Staurothele perradiata Lynge - Hansen (1982: 13)
- Stereocaulon alpinum Laurer - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Thomson (1984: 400), Hansen (1999: 8), Hansen (2002: 11), Hansen (2002: 120), Hansen (2005: 42), Hansen (2008: 31), Hansen (2008: 301), Hansen (2008: 408)
- Stereocaulon arcticum Lynge - Hansen (1978b: 16), Hansen (1978: 57), Thomson (1984: 402), Hansen (2005: 42)
- Stereocaulon arenarium (Savicz) I. M. Lamb - Hansen (1978: 12), Hansen (1978b: 16), Thomson (1984: 403), Hansen (2002: 11), Hansen (2002: 120), Hansen (2005: 42)
- Stereocaulon botryosum Ach. em. Frey - Thomson (1984: 405), Hansen (1999: 8), Hansen (2002: 11), Hansen (2002: 120), Hansen (2005: 42)
- Stereocaulon condensatum Hoff. - Thomson (1984: 407)
- Stereocaulon cumulatum (Sommerf.) Timdal - Timdal (2002: 11)
- Stereocaulon glareosum (Sav.) H. Magn. - Hansen (1978: 12), Thomson (1984: 412), Hansen (2002: 11), Hansen (2002: 120), Hansen (2005: 42), Hansen (2008: 301), Hansen (2008: 409)
- Stereocaulon grande (Magn.) H. Magn. - Thomson (1984: 413)
- Stereocaulon groenlandicum (Dahl) - Thomson (1984: 414)
- Stereocaulon incrustatum Flörke - Hansen (2002: 11)
- Stereocaulon paschale (L.) Hoffm. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Thomson (1984: 418), Hansen (2002: 11)
- Stereocaulon rivulorum H. Magn. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Hansen (1983: 178), Thomson (1984: 421)
- Stereocaulon spathuliferum Vain. - Thomson (1984: 425)
- Stereocaulon tomentosum E. Fries - Thomson (1984: 428)
- Stereocaulon uliginosum J. M. Lamb - Thomson (1984: 429)
- Stereocaulon vesuvianum Pers. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Thomson (1984: 430), Hansen (2002: 11)
- Tephromela aglaea (Sommerf.) Hertel & Rambold - Thomson (1997: 600)
- Tephromela atra (Huds.) Hafellner - Thomson (1997: 633)
- Tetramelas geophilus Norman - Hansen (1983: 177 as Buellia geophila), Daniels et al. (1985: 50 as Buellia geophila), Thomson (1997: 133 as Buellia geophila), Hansen (2002: 109 as Buellia geophila)
- Tetramelas insignis (Nägeli ex Hepp) Kalb - Alstrup et al. (2000: 6 as Buellia insignis), Hansen (2006: 37 as Buellia insignis)
- Tetramelas papillatus (Sommerf.) Kalb - Thomson (1997: 136 as Buellia papillata), Alstrup et al. (2000: 6 as Buellia papillata), Hansen (2002: 7 as Buellia papillata), Hansen (2002: 109 as Buellia papillata), Hansen (2005: 40 as Buellia papillata), Hansen (2008: 401 as Buellia papillata)
- Tetramelas pulverulentus (Anzi) A. Nordin & Tibell - Alstrup et al. (2000: 6 as Buellia pulverulenta on Physconia muscigena, Physcia dubia), Hansen (2002: 109 as Buellia pulverulenta)
- Tetramelas terricolus A. Nordin - Alstrup et al. (2000: 6 as Buellia terricola)
- Thallinocarpon pulvinatum Å. E. Dahl - Dahl (1950: 42 Protologue) Type
- Thalloidima arcticum (Timdal) Timdal - Hansen (2002: 120 as Toninia arctica), Hansen (2008: 301 as Toninia arctica)
- Thamnolia subuliformis (Ehrh.) W. L. Culb. - Hansen (1983: 178), Thomson (1984: 438), Hansen (1999: 8 as Thamnolia vermicularis var. subuliformis), Hansen (2005: 42 as Thamnolia vermicularis var. subuliformis)
- Thamnolia vermicularis (Sw.) Schaer. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Thomson (1984: 438), Hansen (2002: 11), Hansen (2002: 120), Hansen (2008: 31), Hansen (2008: 409)
- Thelidium methorium (Nyl.) Hellb. - Thomson (1997: 605 as Thelidium aeneovinosum)
- Thelidium papulare (Fr.) Arnold - Hansen (1982: 13. Thomson (1997: 607)
- Thelidium pyrenophorum (Ach.) Körb. - Thomson (1997: 607)
- Thelidium velutinum (Bernh.) Körb. - Thomson (1997: 608)
- Thelignya groenlandica (Å. E. Dahl) Henssen - Dahl (1950: xx as Porocyphus groenlandicus Protologue), Thomson (1997: 489 as Porocyphus groenlandicus) Type
- Thelignya lignyota (Wahlenb.) P. M. Jørg. & Henssen - Hansen (2004: 4)
- Thelocarpon epibolum Nyl. - Thomson (1997: 609)
- Thrombium epigaeum (Pers.) Wallr. - Thomson (1997: 610)
- Toninia athallina (Hepp) Timdal - Thomson (1997: 195 as Catillaria athallina)
- Toninia caeruleonigricans (Lightf.) Th. Fr. - Hansen (1978b: 16), Hansen (1978: 57), Thomson (1997: 614)
- Toninia candida (W. A. Weber) Th. Fr. - Thomson (1997: 615)
- Toninia cumulata (Sommerf.) Th. Fr. - Thomson (1997: 616)
- Toninia fusispora (Hepp) Th. Fr. - Thomson (1997: 616)
- Toninia lobulata (Sommerf.) Lynge - Thomson (1997: 617)
- Toninia nordlandica Th. Fr. - Hansen (2004: 89)
- Toninia rosulata (Anzi) H. Olivier - Hansen (2003: 153)
- Toninia sedifolia (Scop.) Timdal - Hansen (2002: 121)
- Toninia squalescens (Nyl.) Th. Fr. - Thomson (1997: 618)
- Toninia squalida (Schleicher ex Ach.) A. Massal. - Thomson (1997: 619)
- Toninia tristis (Th. Fr.) Th. Fr. - Thomson (1997: 620)
- Toninia tristis (Th. Fr.) Th. Fr. subsp. scholanderi (Lynge) Timdal - Hansen (2002: 121)
- Toninia verrucarioides (Nyl.) Timdal - Hansen (2004: 88)
- Toniniopsis illudens (Nyl.) Kistenich, Timdal, Bendiksby & S. Ekman - Thomson (1997: 104 Bacidia illudens)
- Trapeliopsis granulosa (Hoffm.) Lumbsch - Thomson (1997: 624), Hansen (2002: 11)
- Tremolecia atrata (Ach.) Hertel - Hansen (1978: 10 as Lecidea dicksonii), Hansen (1978b: 15 as Lecidea dicksonii), Hansen (1978: 57 as Lecidea dicksonii), Thomson (1997: 627), Hansen (1999: 8), Hansen (2002: 11), Hansen (2002: 121), Hansen (2004: 15), Hansen (2005: 42), Hansen (2008: 409)
- Trimmatothelopsis scabrida (Hedl. ex H. Magn.) Cl. Roux & Nav.-Ros. - Magnusson (1935: 225 as Acarospora scabrida)
- Tuckermannopsis chlorophylla (Willd.) Hale - Alstrup (1982: 69 as Cetraria chlorophylla), Thomson (1984: 73 as Cetraria chlorophylla)
- Umbilicaria aprina Nyl. - Hansen (2003: 153)
- Umbilicaria arctica (Ach.) Nyl. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Hansen (1983: 178), Thomson (1984: 444), Hansen (2002: 11), Hansen (2002: 121), Hansen (2004: 15), Hansen (2005: 42)
- Umbilicaria cinereorufescens ( Schaer.) Frey - Hansen (1978: 12), Thomson (1984: 446)
- Umbilicaria cylindrica (L.) Del. in Duby - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Hansen (1983: 178), Thomson (1984: 448), Hansen (1999: 8)
- Umbilicaria decussata (Vill.) Zahlbr. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1983: 177 as Omphalodiscus decussatus), Thomson (1984: 288 as Omphalodiscus decussatus), Hansen (1999: 8), Hansen (2002: 121), Hansen (2005: 42), Hansen (2008: 32), Hansen (2008: 409)
- Umbilicaria deusta (L.) Baumg. - Hansen (1978b: 16), Hansen (1978: 57), Thomson (1984: 449), Hansen (2002: 11), Hansen (2008: 301)
- Umbilicaria havaasii Llano - Thomson (1984: 451)
- Umbilicaria hirsuta (Sw.) Ach. - Hansen (1978: 12), Hansen (1978b: 16), Thomson (1984: 452)
- Umbilicaria hyperborea (Ach.) Hoffm. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Hansen (1983: 178), Thomson (1984: 453), Hansen (1999: 8), Hansen (2002: 11), Hansen (2002: 121), Hansen (2004: 15), Hansen (2005: 42), Hansen (2008: 409)
- Umbilicaria krascheninnikovii (Savicz) Zahlbr. - Thomson (1984: 289 as Omphalodiscus krascheninnikovii), Hansen (2008: 32)
- Umbilicaria leiocarpa DC. - Thomson (1984: 29 as Agyrophora leiocarpa), Hansen (2002: 121), Hansen (2004: 4)
- Umbilicaria lyngei Schol. - Hansen (1978b: 16), Hansen (1978: 57), Hanssen (1980: 91 as Agyrophora lyngei), Hansen (1983: 177 as Agyrophora lyngei), Thomson (1984: 28 as Agyrophora lyngei), Hansen (1999: 8), Hansen (2002: 121), Hansen (2005: 42), Hansen (2008: 32), Hansen (2008: 409)
- Umbilicaria mammulata (Ach.) Tuck. - Thomson (1984: 454)
- Umbilicaria nylanderiana (Zahlbr.) H. Magn. - Hansen (2002: 121), Hansen (2004: 4)
- Umbilicaria polyphylla (L.) Baumg. - Hansen (1978: 12), Thomson (1984: 457)
- Umbilicaria proboscidea (L.) Schrad. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Hansen (1983: 178), Thomson (1984: 458), Hansen (1999: 8), Hansen (2002: 11), Hansen (2002: 121), Hansen (2005: 42)
- Umbilicaria rigida (Du Rietz) Frey - Thomson (1984: 33 as Agyrophora rigida)
- Umbilicaria scholanderi (Llano) Krog - Thomson (1984: 33 as Agyrophora scholanderi)
- Umbilicaria torrefacta (Lightf.) Schrad. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Hansen (1983: 178), Thomson (1984: 459), Hansen (1999: 8), Hansen (2002: 11), Hansen (2002: 121), Hansen (2004: 15), Hansen (2005: 42)
- Umbilicaria vellea (L.) Ach. - Hansen (1978: 12), Hansen (1978b: 16), Hansen (1978: 57), Thomson (1984: 460), Hansen (1999: 8), Hansen (2002: 121), Hansen (2005: 43), Hansen (2008: 301), Hansen (2008: 409)
- Umbilicaria virginis Schaer. - Hansen (1978b: 16), Hansen (1978: 57), Hansen (1983: 177), Thomson (1984: 290 as Omphalodiscus virginis), Hansen (2002: 11), Hansen (2002: 121), Hansen (2004: 15), Hansen (2005: 43), Hansen (2008: 32), Hansen (2008: 301), Hansen (2008: 409)
- Usnea sphacelata R. Br. - Alstrup et al. (2000: 12 as Neuropogon sphacelatus), Hansen (2005: 43), Hansen (2008: 32), Hansen (2008: 301), Hansen (2008: 409)
- Usnea sulphurea Th. Fr. - Thomson (1984: 286 as Neuropogon sulphureus)
- Varicellaria rhodocarpa (Körb.) Th. Fr. - Thomson (1997: 629)
- Verrucaria acrotella Ach. - Thomson (1997: 631), Hansen (2006: 4)
- Verrucaria aethiobola Wahlenb. - Hansen (1982: 13), Thomson (1997: 632)
- Verrucaria arctica Lynge - Thomson (1997: 633)
- Verrucaria cateleptoides (Nyl.) Nyl. - Thomson (1997: 634)
- Verrucaria ceuthocarpa Wahlenb. - Thomson (1997: 635), Hansen (1999: 8), Hansen (2002: 11), Hansen (2002: 121)
- Verrucaria degelii R. Sant. - Hansen (1986: 184)
- Verrucaria deversa Vain. - Thomson (1997: 637)
- Verrucaria erichsenii Zsch. - Hansen (1983: 493), Thomson (1997: 637)
- Verrucaria margacea (Wahlenb. in Ach.) Wahlenb. - Thomson (1997: 639)
- Verrucaria maura Wahlenb. - Thomson (1997: 640), Hansen (2002: 11)
- Verrucaria mucosa Wahlenb. - Thomson (1997: 641), Hansen (2002: 11)
- Verrucaria nigrescens Pers. - Hansen (2002: 11)
- Verrucaria praetermissa (Trevis.) Anzi - Hansen (1986: 184)
- Verrucaria rupestris Schrad. - Thomson (1997: 643)
- Verrucaria striatula Wahlenb. - Thomson (1997: 645)
- Verrucaria thalassina (Zahlbr.) Zahlbr. - Hansen (1982: 13), Thomson (1997: 645)
- Vestergrenopsis elaeina (Wahlenb.) Gyeln. - Hansen (2002: 12)
- Vestergrenopsis isidiata (Degel.) Dahl - Hansen (1978b: 16), Hansen (1978: 57), Thomson (1984: 473), Hansen (1999: 8), Hansen (2002: 12), Hansen (2002: 121)
- Vulpicida pinastri (Scop.) J.-E. Mattsson & M. J. Lai - Hansen (1978: 9 as Cetraria pinastri), Alstrup (1982: 69 as Cetraria pinastri), Thomson (1984: 93 as Cetraria pinastri)
- Vulpicida tilesii (Ach.) J.-E. Mattsson & M.-J. Lai - Hansen (1981: 97 First record), Hansen (2008: 409)
- Vulpicida tubulosus (Schaer.) J.-E. Mattsson & M. J. Lai - Hansen (1984: 301 as Cetraria tilesii), Thomson (1984: 89 as Cetraria tilesii)
- Xanthocarpia lactea (A. Massal.) A. Massal. - Hansen, Poelt & Søchting (1987: 34 as Caloplaca lactea)
- Xanthoparmelia conspersa (Ehrh. ex Ach.) Hale - Hansen (1978: 11)
- Xanthoparmelia pulla (Ach.) O. Blanco, A. Crespo, Elix, D. Hawksw. & Lumbsch - Hansen (1978: 11 as Parmelia pulla)
- Xanthoria borealis R. Sant. & Poelt - Poelt & Petutschnig (1992: 18), Hansen (2002: 12), Hansen (2002: 122), Hansen (2005: 43)
- Xanthoria candelaria (L.) Arnold - Alstrup (1977: 116 as Xanthoria candelaria), Hansen (1978: 12 as Xanthoria candelaria), Hansen (1978b: 16 as Xanthoria candelaria), Hansen (1978: 57 as Xanthoria candelaria), Hansen (1983: 178 as Xanthoria candelaria), Thomson (1984: 483 as Xanthoria candelaria), Hansen (2008: 409 as Xanthoria candelaria)
- Xanthoria elegans (Link.) Th. Fr. var. splendens (Darb.) Christ. ex Poelt - Hansen (2002: 122)
- Xanthoria fulva (Hoffm.) Poelt & Petutschnig - Hansen (2003: 153 as Xanthoria fulva)
- Xanthoria parietina (L.) Th. Fr. - Alstrup (1977: 116)
- Xanthoria sorediata (Vain.) Poelt - Hansen (1978: 12 as Xanthoria sorediata), Hansen (1978b: 16 as Xanthoria sorediata), Hansen (1978: 57 as Xanthoria sorediata), Thomson (1984: 487 as Xanthoria sorediata), Hansen (2002: 12 as Xanthoria sorediata), Hansen (2002: 122 as Xanthoria sorediata), Hansen (2005: 43 as Xanthoria sorediata)
- Xylographa abietina (Pers.) Zahlbr. - Thomson (1997: 646)
- Xylographa parallela (Ach.) Fr. - Hansen (2006: 4)