Checklist of lichens of Montana (USA)
Preliminary version 1 January 2017

  1. Absconditella lignicola Vězda & Pišút - McCune et al. (2014: 15)

  2. Acarospora americana H. Magn. - Knudsen et al. (2011: ), McCune et al. (2014: 15)
  3. Acarospora badiofusca (Nyl.) Th. Fr. - McCune et al. (2014: 15 First record)
  4. Acarospora complanata H. Magn. - McCune et al. (2014: 15)
  5. Acarospora elevata H. Magn. - McCune et al. (2014: 16 First record)
  6. Acarospora fuscata (Nyl.) Arnold - McCune (1982: 16), Thomson (1997: 24), McCune et al. (2014: 16)
  7. Acarospora fuscescens H. Magn. - McCune et al. (2014: 16 First record)
  8. Acarospora glaucocarpa (Wahlenb. ex Ach.) Körb. - DeBolt & McCune (1993: ), Eversman et al. (1999: ), Salix & Eversman (2005: ), McCune et al. (2014: 16)
  9. Acarospora moenium (Vain.) Räsänen - McCune et al. (2014: 16 First record)
  10. Acarospora nevadensis H. Magn. - McCune et al. (2014: 16 First record)
  11. Acarospora obnubila H. Magn. - McCune et al. (2014: 16 First record)
  12. Acarospora oligospora (Nyl.) Arnold - McCune et al. (2014: 16 First record)
  13. Acarospora oreophila K. Knudsen - McCune et al. (2014: 16 First record)
  14. Acarospora peliscypha Th. Fr. - McCune et al. (2014: 17 First record)
  15. Acarospora rosulata (Th. Fr.) H. Magn. - McCune et al. (2014: 17 First record)
  16. Acarospora schleicheri (Ach.) A. Massal. - Hanna (1958), Looman (1964), DeBolt & McCune (1993), Thomson (1997: 33), McCune (1998), Damm (2001), McCune & Rosentreter (2007), McCune et al. (2014: 17)
  17. Acarospora sinopica (Wahlenb.) Körb. - McCune et al. (2014: 17 First record)
  18. Acarospora stapfiana (Müll. Arg.) Hue - Eversman et al. (1999: ), McCune et al. (2014: 16)
  19. Acarospora strigata (Nyl.) Jatta - Schubloom (1995: ), Eversman et al. (1999: ), Eversman & Schanz (1996: ), Salix & Eversman (2005), McCune et al. (2014: 17)
  20. Acarospora thamnina (Tuck.) Herre - Fink (1935), McCune (1998), McCune et al. (2014: 16)
  21. Acarospora veronensis A. Massal. - DeBolt & McCune (1993: ), Thomson (1997: 35), Eversman et al. (1999: ), Salix & Eversman (2005), McCune et al. (2014: 18)

  22. Adelolecia pilati (Hepp) Hertel & Hafellner - McCune et al. (2014: 18 First record)

  23. Agonimia tristicula (Nyl.) Zahlbr. - McCune et al. (2014: 18 First record)

  24. Ahtiana sphaerosporella (Müll. Arg.) Goward - Goward (1985, Lesica et al. (1991: ), DeBolt & McCune (1993: ), McCune (1998), McCune et al. (2014: 18)

  25. Alectoria imshaugii Brodo & D. Hawksw. - Brodo & Hawksworth (1977), Kärnefelt (1980), McCune & Antos (1982), McCune (1982: 16), McCune (1984: ), Lesica et al. (1991:), DeBolt & McCune (1993: ), Schubloom (1995), Hauck & Spribille (2002: xx), Hauck & Spribille (2005: 551), McCune et al. (2014: 19)
  26. Alectoria nigricans (Ach.) Nyl. - Imshaug (1957), Thomson (1984: 35), DeBolt & McCune (1993),
  27. Alectoria sarmentosa (Ach.) Ach. - Harris & Harris (1904: as Alectoria ochroleuca var. sarmentosa), Jones (1910: as Alectoria ochroleuca var. sarmentosa), Howe (1911), Fink (1935), Habeck (1963), Motyka (1964: ), Hawksworth (1972), Brodo & Hawksworth (1977), Eversman (1979), McCune (1982: 16), McCune & Antos (1982), McCune (1984), Lesica et al. (1991), DeBolt & McCune (1993), Schubloom (1995), McCune (1998:), Hauck & Spribille (2002), Hauck & Spribille (2005: 551), McCune et al. (2014: 19)
  28. Alectoria vexillifera (Nyl.) Stizenb. - McCune (1984), McCune (1998), DeBolt & McCune (1993: as Alectoria sarmentosa subsp. vexillifera), McCune et al. (2014: 19)

  29. Allantoparmelia alpicola (Th. Fr.) Essl. - Thomson (1984: 299 as Parmelia alpicola), McCune (1984), DeBolt & McCune (1993), McCune (1998), McCune et al. (2014: 20)

  30. Allocetraria madreporiformis (Ach.) Kärnefelt & A. Thell - McCune et al. (2014: 20)

  31. Amandinea punctata (Hoffm.) Coppins & Scheid. - McCune (1982: 17 as Buellia punctata), Eversman (1982: 211 as Buellia punctata), Thomson (1997: 138 as Buellia punctata), McCune (1998), Eversman et al. (1999), Hauck & Spribille (2002), Hauck & Spribille (2005: 551), McCune et al. (2014: 20 as Buellia punctata)

    Anaptychia elbursiana (Szatala) Poelt - McCune et al. (2014: 20)
    Anaptychia ulotrichoides (Vain.) Vain. - McCune et al. (2014: 20)

    Anzina carneonivea (Anzi) Scheid. - McCune et al. (2014: 20)

    Arctomia delicatula Th. Fr. - McCune et al. (2014: 20)

    Arctoparmelia centrifuga (L.) Hale - McCune et al. (2014: 20)
    Arctoparmelia subcentrifuga (Oxner) Hale - McCune et al. (2014: 21)

    Arthonia apatetica (A. Massal.) Th. Fr. - McCune et al. (2014: 21)
    Arthonia glebosa Tuck. - , McCune et al. (2014: 21)
    Arthonia lapidicola (Taylor) Branth & Rostrup - McCune et al. (2014: 21)
    Arthonia mediella Nyl. - McCune et al. (2014: 21)
    Arthonia muscigena Th. Fr. - McCune et al. (2014: 21)

  32. Arthonia patellulata Nyl. - Thomson (1997: 47), McCune et al. (2014: 21)

    Arthrorhaphis citrinella (Ach.) Poelt - McCune et al. (2014: 21)

    Aspicilia americana B. de Lesd. - McCune et al. (2014: 22)
    Aspicilia aquatica Körb. - McCune et al. (2014: 22)
    Aspicilia arctica (Lynge) Oxner - McCune et al. (2014: 22)

  33. Aspicilia candida (Anzi) Hue - Thomson (1997: 67), McCune et al. (2014: 22)
    x
  34. Aspicilia cinerea (L.) Körb. - McCune (1982: 16), Thomson (1997: 68), McCune et al. (2014: 22)
    x
  35. Aspicilia cingulata (Zahlbr.) Oxner - Thomson (1997: 70), McCune et al. (2014: 22)
    Aspicilia confusa Owe-Larsson & A. Nordin - McCune et al. (2014: 22)
    Aspicilia cyanescens Owe-Larsson & A. Nordin - McCune et al. (2014: 23)
    Aspicilia filiformis Rosentreter - McCune et al. (2014: 23)
    Aspicilia intermutans (Wahlenb.) Th. Fr. - McCune et al. (2014: 23)
    Aspicilia knudsenii Owe-Larsson & A. Nordin - McCune et al. (2014: 23)
    Aspicilia laevata (Ach.) Arnold - McCune et al. (2014: 23)
    x
  36. Aspicilia lesleyana Darbish. - Thomson (1997: 79), McCune et al. (2014: 23)
    Aspicilia mansourii Sohrabi - McCune et al. (2014: 23)
    Aspicilia reptans (Looman) Wetmore - McCune et al. (2014: 24)
    Aspicilia subplicigera (H. Magn.) Oxner - McCune et al. (2014: 24)
    x
  37. Aspicilia subradians (Nyl.) Hue - Thomson (1997: 94), McCune et al. (2014: 24)
    x
  38. Aspicilia supertegens Arnold - Thomson (1997: 95), McCune et al. (2014: 24)

    Bacidia akompsa (Tuck.) Fink - McCune et al. (2014: 24)
    Bacidia auerswaldii (Hepp ex Stizenb.) Mig. - McCune et al. (2014: 24)
    Bacidia bagliettoana (A. Massal. & De Not.) Jatta - McCune et al. (2014: 24)
    Bacidia circumspecta (Nyl. ex Vain.) Malme - McCune et al. (2014: 24)
    Bacidia idahoensis H. Magn. -
    x

  39. Bacidia idahoensis H. Magn. - McCune (1982: 16), McCune et al. (2014: 24)
    Bacidia subincompta (Nyl.) Arnold - McCune et al. (2014: 25)
    Bacidia vermifera (Nyl.) Th. Fr. - McCune et al. (2014: 25)

    Bacidina contecta S. Ekman & T. Sprib. - McCune et al. (2014: 25)
    Bacidina egenula (Nyl.) Vezda - McCune et al. (2014: 26 First record)
    Bacidina inundata (Fr.) Vezda - McCune et al. (2014: 26 First record)
    Bacidina ramea S. Ekman - McCune et al. (2014: 26 First record)

    Baeomyces rufus (Huds.) Rebent. - McCune et al. (2014: 26)

  40. Bellemerea alpina (Sommerf.) Clauz. & Roux - McCune (1982: 16 as Aspicilia alpina), Thomson (1997: 115), McCune et al. (2014: 26)
  41. Bellemerea cinereorufescens (Ach.) Clauz. & Roux - Thomson (1997: 116), McCune et al. (2014: 26)
    Bellemeria diamarta (Ach.) Hafellner & Cl. Roux - Brodo et al. (1987: xx), McCune et al. (2014: 26)
    Biatora aurolepra T. Sprib. & Tønsberg - Spribille et al. (2009: xx First record), McCune et al. (2014: 26)
    Biatora beckhausii (Körb.) Tuck. - McCune et al. (2014: 26)
    x
  42. Biatora chrysantha (Zahlbr.) Printzen in V. Wirth - Hauck & Spribille (2005: 551)
    Biatora fallax Hepp - Printzen & Tønsberg (1999: xx First record), McCune et al. (2014: 26)
    x
  43. Biatora flavopunctata (Tønsberg) Hinter. & Printzen - Printzen & Tønsberg (1999: xx), Hauck & Spribille (2005: 551), Obermayer (2011: xx), McCune et al. (2014: 26 First record)
    Biatora globulosa (Flörke) Fr. - McCune et al. (2014: 26 First record)
    Biatora rufidula (Graewe in Hellb.) S. Ekman & Printzen - Printzen & Tønsberg (1999: xx First record), Hauck & Spribille (2002: xx), McCune et al. (2014: 26)
    Biatora subduplex (Nyl.) Printzen - Printzen & Tønsberg (1999: xx), McCune et al. (2014: 26 First record)
    x
  44. Biatora toensbergii Holien & Printzen - Hauck & Spribille (2005: 551) not mentioned for Montana by McCune et al. 2014
    Biatora vacciniicola (Tønberg) Printzen - Printzen & Tønsberg (1999), McCune et al. (2014: 27)

    Biatoridium delitescens (Arnold) Hafellner - Ekman (1996: 67), McCune et al. (2014: 27)

    Bilimbia lobulata (Sommerf.) Hafellner & Coppins - McCune et al. (2014: 27)

    Bilimbia microcarpa (Th. Fr.) Th. Fr. - McCune et al. (2014: 28)
    Bilimbia sabuletorum (Schreber) Arnold - McCune et al. (2014: 28)

    Brianaria bauschiana (Körb.) S. Ekman & M. Svensson - McCune et al. (2014: 28 First record)
    Brigantiaea praetermissa Hafellner & St. Clair - McCune et al. (2014: 28)
    Brodoa oroarctica (Krog) Goward - McCune et al. (2014: 28)
    Bryobilimbia hypnorum (Lib.) Fryday, Printzen & S. Ekman - McCune et al. (2014: 28)
    x

  45. Bryonora castanea (Hepp) Poelt - Thomson (1997: 122), McCune et al. (2014: 28)
    Bryonora pruinosa (Th. Fr.) Holtan-Hartwig - McCune et al. (2014: 28)
    x
  46. Bryoria capillaris (Ach.) Brodo & D. Hawksw. - McCune (1982: 16), Thomson (1984: 55), Hauck & Spribille (2005: 551), McCune et al. (2014: 29)
    x
  47. Bryoria fremontii (Gyeln.) Brodo & D. Hawksw. - McCune (1982: 16), Spribille (2002: 20 as Bryoria tortuosa), Hauck & Spribille (2005: 551), McCune et al. (2014: 29)
    x
  48. Bryoria friabilis Brodo & D. Hawksw. - McCune (1982: 16), McCune et al. (2014: 29)
    x
  49. Bryoria fuscescens (Gyeln.) Brodo & D. Hawksw. - McCune (1982: 16), McCune (1982: 16 as Bryoria lanestris), Eversman (1982: 211), Thomson (1984: 57), Thomson (1984: 59 as Bryoria lanestris), Hauck & Spribille (2005: 551), McCune et al. (2014: 29)
    x
  50. Bryoria glabra (Mot.) Brodo & D. Hawksw. - Thomson (1984: 58), Hauck & Spribille (2005: 551), McCune et al. (2014: 29)
    Bryoria implexa (Hoffm.) Brodo & D. Hawksw. - McCune et al. (2014: 29)
    Bryoria lanestris (Ach.) Brodo & D. Hawksw. - McCune et al. (2014: 30)
    x
  51. Bryoria nadvornikiana (Gyeln.) Brodo & D. Hawksw. - Thomson (1984: 61), McCune et al. (2014: 30)
    x
  52. Bryoria pseudofuscenscens (Gyeln.) Brodo & D. Hawksw. - McCune (1982: 17), Thomson (1984: 63), McCune et al. (2014: 30)
    x
  53. Bryoria simplicior (Vain.) Brodo & D. Hawksw. - Thomson (1984: 65), McCune et al. (2014: 30)
    x
  54. Bryoria trichodes (Michx.) Brodo & D. Hawksw. subsp. trichodes - Thomson (1984: 68)
    x
  55. Bryoria vrangiana (Gyeln.) Brodo & D. Hawksw.- Thomson (1984: 69)

    x

  56. Buellia disciformis (Fr.) Muss. - Thomson (1997: 129)
    x
  57. Buellia elegans Poelt - Thomson (1997: 130)
    x
  58. Buellia griseovirens (Turner & Borrer ex Sm.) Almb. - Hauck & Spribille (2005: 551)
    x
  59. Buellia dispersa xxx - McCune (1982: 17 as Buellia retrovertens)

    x

  60. Calicium adaequatum Nyl. - McCune (1982: 17)
  61. Calicium corynellum (Ach.) Ach. - Kolb & Spribille (2001: 91)
  62. Calicium glaucellum - Hauck & Spribille (2005: 551)
  63. Calicium viride Pers. - McCune (1982: 17), Thomson (1997: 146), Hauck & Spribille (2005: 551)

  64. Caloplaca ammiospila (Ach.) Oliv. - Thomson (1997: 151)
  65. Caloplaca crenularia (With.) J. R. Laundon - Thomson (1997: 157)
  66. Caloplaca diphyodes (Nyl.) Jatta - Anderson (1967: 339)
  67. Caloplaca fraudans (Th. Fr.) Oliv. - Thomson (1997: 162)
  68. Caloplaca furfuracea H. Magn. - Wetmore (2004: 289)
  69. Caloplaca holocarpa (Hoffm.) Wade - Thomson (1997: 164)
  70. Caloplaca jungermanniae (Vahl) Th. Fr. - Thomson (1997: 166)
  71. Caloplaca stillicidiorum (Vahl) Lynge - McCune (1982: 17), Thomson (1997: 172)
  72. Caloplaca tominii Savicz - Thomson (1997: 175)

  73. Candelariella aurella (Hoffm.) Zahlbr. - Thomson (1997: 182)
  74. Candelariella terrigena Räsänen - Thomson (1997: 187)
  75. Candelariella vitellina (Hoffm.) Müll. Arg. - McCune (1982: 17), Eversman (1982: 211), Thomson (1997: 189)

  76. Carbonea vorticosa (Flörke) Hertel - Thomson (1997: 193)

  77. Catillaria glauconigrans (Tuck.) Hasse - Thomson (1997: 197)

  78. Catinaria atropurpurea (Schaer.) Vezda & Poelt - Thomson (1997: 201)

  79. Catolechia wahlenbergii (Ach.) Körb. - Thomson (1997: 202)

    x

  80. Cetraria ericetorum Opiz subsp. ericetorum - Thomson (1984: 79)
    x
  81. Cetraria ericetorum Opiz subsp. reticulatum (Räsänen) Kärnefelt - McCune (1982: 17)
  82. Cetraria hepatizon (Ach.) Vain. - Thomson (1984: 82)
  83. Cetraria idahoensis Essl. - Esslinger (1971: 366), McCune (1982: 17)
  84. Cetraria islandica (L.) Ach. - Thomson (1984: 84)
  85. Cetraria merrillii Du Rietz - McCune (1982: 17)
  86. Cetraria orbata (Nyl.) Fink - McCune (1982: 17)
  87. Cetraria platyphylla Tuck. - McCune (1982: 17)
  88. Cetraria sepincola (Ehrh.) Ach. - McCune (1982: 17)

  89. Cetrariella commixta(Nyl.) A. Thell & Kärnefelt - Thomson (1984: 75 as Cetraria commixta)

  90. Chaenotheca chrysocephala (Turner ex Ach.) Th. Fr. - Thomson (1997: 205), Hauck & Spribille (2005: 551)
  91. Chaenotheca subroscida - Hauck & Spribille (2005: 551)
  92. Chaenotheca trichialis - Hauck & Spribille (2005: 551)

  93. Chaenothecopsis nana - Hauck & Spribille (2005: 551)

  94. Circinaria caesiocinerea (Nyl. ex Malbr.) Arnold - McCune (1982: 16 as Aspicilia caesiocinerea), Thomson (1997: 65 as Aspicilia caesiocinerea)

  95. Cladonia arbuscula (Wallr.) Hale & W. Culb. - McCune (1982: 17)
  96. Cladonia bacillaris (Ach.) Nyl. - McCune (1982: 17), Thomson (1984: 111)
  97. Cladonia cariosa (Ach.) Spreng. - McCune (1982: 17), Thomson (1984: 116)
  98. Cladonia carneola (Fr.) Fr. - McCune (1982: 17), Thomson (1984: 117)
  99. Cladonia cenotea (Ach.) Schaer. - McCune (1982: 17), Thomson (1984: 118)
  100. Cladonia chlorophaea ( Flörke ex. Sommerf.) Spreng. - McCune (1982: 17), Thomson (1984: 119)
  101. Cladonia coccifera (L.) Willd. - McCune (1982: 17), Thomson (1984: 121)
  102. Cladonia coniocraea (Flörke) Spreng. - McCune (1982: 17), Thomson (1984: 122), Hauck & Spribille (2005: 551)
  103. Cladonia cornuta (L.) Hoffm. - McCune (1982: 17), Thomson (1984: 124)
  104. Cladonia deformis (L.) Hoffm. - McCune (1982: 17), Thomson (1984: 129)
  105. Cladonia digitata (L.) Hoffm. - Thomson (1984: 131)
  106. Cladonia ecmocyna Leight. - McCune (1982: 17), Thomson (1984: 132)
  107. Cladonia fimbriata (L.) Fr. - McCune (1982: 17), Thomson (1984: 133), Hauck & Spribille (2005: 551)
  108. Cladonia furcata (Huds.) Schrad. - McCune (1982: 17)
  109. Cladonia gracilis (L.) Willd. ssp. turbinata (Ach.) Ahti - Thomson (1984: 136)
  110. Cladonia gracilis (L.) Willd. var. gracilis - Thomson (1984: 137)
  111. Cladonia macrophyllodes Nyl. - Thomson (1984: 143)
  112. Cladonia merochlorophaea Asah. - McCune (1982: 17)
  113. Cladonia mitis Sandst. - McCune (1982: 17), Thomson (1984: 148)
  114. Cladonia multiformis Merr. - McCune (1982: 17), Thomson (1984: 149)
  115. Cladonia norrlinii Vain. - McCune (1982: 17)
  116. Cladonia phyllophora Hoffm. - McCune (1982: 17)
  117. Cladonia pleurota (Flörke) Schaer. - McCune (1982: 17), Thomson (1984: 154)
  118. Cladonia pyxidata (L.) Hoffm. - McCune (1982: 17), Thomson (1984: 158)
  119. Cladonia rangiferina (L.) F. H. Wigg. - Thomson (1984: 159)
  120. Cladonia squamosa (Scop.) Hoffm. - McCune (1982: 17), Hauck & Spribille (2005: 551)
  121. Cladonia subulata (L.) F. H. Wigg. - McCune (1982: 17), Thomson (1984: 168)
  122. Cladonia sulphurina (Michx.) Fr. - McCune (1982: 17)
  123. Cladonia umbricola Tønsberg & Ahti - McCune (1982: 17), Hauck & Spribille (2005: 551)
  124. Cladonia verruculosa (Vain.) Ahti - McCune (1982: 17)
  125. Cladonia verticillata (Hoffm.) Schaer. - McCune (1982: 17)

  126. Collema curtispora Degel. - McCune (1982: 17)
  127. Collema furfuraceum (Arnold) Du Rietz - McCune (1982: 17)
  128. Collema tenax (Sw.) Ach. - McCune (1982: 17)
  129. Collema tuniforme (Ach.) Ach. - Thomson (1984: 192)

  130. Coniocybe furfuracea (L.) Ach. - McCune (1982: 17), Thomson (1997: 210)

  131. Cornicularia aculeata (Schreb.) Ach. - Thomson (1984: 198)

  132. Cyphelium inquinans (Sm. in Sm. & Sow.) Trevisan - McCune (1982: 17), Thomson (1997: 212), Hauck & Spribille (2005: 551)
  133. Cyphelium tigillare - Eversman (1982: 211)

  134. Cystocoleus ebeneus (Dill.) Thwaites - Anderson (1967: 339)

  135. Dactylina madreporiformis (Ach.) Tuck.- Thomson (1984: 206)
  136. Dactylina ramulosa (Hook.) Tuck. - Thomson (1984: 207)

  137. Dermatocarpon americanum Vain. - Heidmarsson (2003: 466)
  138. Dermatocarpon cinereum (Pers.) Th. Fr. - Thomson (1984: 211)
  139. Dermatocarpon fluviatile (Web.) Th. Fr. - Thomson (1984: 213)
  140. Dermatocarpon hepaticum (Ach.) Th. Fr. - Thomson (1984: 215)
  141. Dermatocarpon intestiniforme (Körb.) Hasse - Thomson (1984: 216)
  142. Dermatocarpon miniatum (L.) Mann. - McCune (1982: 17), Thomson (1984: 219)
  143. Dermatocarpon moulinsii (Mont.) Zahlbr. - McCune (1982: 17)
  144. Dermatocarpon reticulatum H. Magn. - McCune (1982: 17)

  145. Dimelaena oreina (Ach.) Norm. - McCune (1982: 17)

  146. Dimerella diluta (Pers.) Trev. - McCune (1982: 17)
  147. Dimerella pineti - Hauck & Spribille (2005: 551)

  148. Diploschistes muscorum (Scop.) R. Sant. - Thomson (1997: 218)
  149. Diploschistes scruposus (Schreber) Norman - McCune (1982: 18), Thomson (1997: 218)

    x

  150. Diplotomma nivalis (Bagl. & Carest.) Hertel ex Hafellner - Thomson (1997: 134 as Buellia nivalis)
    x
  151. Diplotomma penichrum (Tuck.) Hasse - McCune (1982: 17 as Buellia penichra), Hauck & Spribille (2005: 551 as Buellia penichra)

  152. Endocarpon tortuosum Herre- Thomson (1984: 222)

  153. Euopsis granatina (Sommerf.) Nyl. - Thomson (1997: 223)

  154. Evernia divaricata (L.) Ach. - Thomson (1984: 228 Alpine variant)
  155. Evernia mesomorpha - Eversman (1982: 211)

  156. Farnoldia micropsis (A. Massal.) Hertel - Thomson (1997: 226)

  157. Flavocetraria nivalis (L.) Ach. - Thomson (1984: 92 as Cetraria nivalis)

    x

  158. Fulgensia bracteata (Hoffm.) Räsänen - Thomson (1997: 228)

    x

  159. Fuscopannaria cheiroloba (Müll. Arg.) P. M. Jørg. - Müller Argau (2000: 679 Type ), Jørgensen (2001: xxx ), Jørgensen et al. (2010: 2)

  160. Gallowayella tibellii (S. Y. Kondr. & Kärnefelt) S. Y. Kondr., Fedorenko, S. Stenroos, Kärnefelt, Elix, J.S. Hur & A. Thell - Kondratyuk & Kärnefelt (2003: 125 as Xanthoria tibellii Type in KRAM-L), xx (2012: xx)

  161. Gyalolechia fulgens (Sw.) Søchting, Frödén & Arup - Thomson (1997: 229 as Fulgensia fulgens)

  162. Heppia lutosa (Ach.) Nyl. - Thomson (1997: 244)

  163. Hypogymnia austerodes Nyl. - McCune (1982: 18), Thomson (1984: 237), Hauck & Spribille (2005: 551)
  164. Hypogymnia bitteri (Lynge) Ahti - Eversman (1982: 211), Thomson (1984: 238)
  165. Hypogymnia imshaugii Krog - McCune (1982: 18), Hauck & Spribille (2005: 551)
  166. Hypogymnia metaphysodes (Asah.) Rass. - McCune (1982: 18), Hauck & Spribille (2005: 551)
  167. Hypogymnia occicentalis Pike - McCune (1982: 18), Hauck & Spribille (2005: 551)
  168. Hypogymnia oroacrctica Krog - Thomson (1984: 239)
  169. Hypogymnia physodes (L.) Nyl. - McCune (1982: 18), Eversman (1982: 211), Thomson (1984: 241), Hauck & Spribille (2005: 551)
  170. Hypogymnia rugosa (Merr.) Pike - McCune (1982: 18), Hauck & Spribille (2005: 551)
  171. Hypogymnia tubulosa (Schaer.) Hav. - McCune (1982: 18), Hauck & Spribille (2005: 551)
  172. Hypogymnia vittata (Ach.) Gas. - Thomson (1984: 243)

  173. Icmadophila ericetorum (L.) Zahlbr. - McCune (1982: 18), Thomson (1997: 249)

    x

  174. Ionaspis lacustris (With.) Lutzoni - Thomson (1997: 245 as Hymenelia lacustris)

    x

  175. Japewia subaurifera Muhr & Tønsberg - Hauck & Spribille (2005: 551)

  176. Lecania syringea (Ach.) Th. Fr. - McCune (1982: 18)

  177. Lecanora argopholis (Ach.) Ach. - Thomson (1997: 267)
  178. Lecanora badia (Hoffm.) Ach. - Thomson (1997: 269)
  179. Lecanora boligera - Hauck & Spribille (2005: 551)
  180. Lecanora cadubriae (A. Massal.) Hedl. - McCune (1982: 18), Thomson (1997: 271), Hauck & Spribille (2005: 551)
  181. Lecanora carpinea Tuck. - McCune (1982: 18)
  182. Lecanora cenisia Ach. . - Thomson (1997: 272)
  183. Lecanora circumborealis Brodo & Vitik. - Thomson (1997: 274), Hauck & Spribille (2005: 551)
  184. Lecanora coilocarpa (Ach.) Nyl. - McCune (1982: 18)
  185. Lecanora epibryon (Ach.) Ach. - Thomson (1997: 279)
  186. Lecanora fuscescens (Sommerf.) Nyl. - Thomson (1997: 283), Hauck & Spribille (2005: 551)
  187. Lecanora fuliginosa Brodo - Thomson (1997: 281)
  188. Lecanora hagenii (Ach.) Ach. - McCune (1982: 18), Thomson (1997:286)
  189. Lecanora intricata (Ach.) Ach.- Thomson (1997: 288)
    x
  190. Lecanora laxa (Sliwa & Wetmore) Printzen - Hauck & Spribille (2005: 551)
    x
  191. Lecanora marginata (Schaer.) Hertel & Rambold- Thomson (1997: 291)
    x
  192. Lecanora muralis (Schreb.) Rabenh. - McCune (1982: 18), Thomson (1997: 295)
    x
  193. Lecanora albellula xxx - Eversman (1982: 211 as Lecanora piniperda), Thomson (1997: 299 as Lecanora piniperda)
    x
  194. Lecanora polytropa (Ehrh. in Hoffm.) Rabenh. - McCune (1982: 18), Thomson (1997: 299)
  195. Lecanora pulicaris - McCune (1982: 18), Thomson (1997: 301)
  196. Lecanora rugosella Zahlbr. - McCune (1982: 18), Thomson (1997: 301)
  197. Lecanora rupicola (L.) Zahlbr. - McCune (1982: 18), Thomson (1997: 303)
  198. Lecanora symmicta (Ach.) Ach. - Thomson (1997: 309), Hauck & Spribille (2005: 551)
  199. Lecanora varia (Hoffm.) Ach. - McCune (1982: 18), Thomson (1997: 311)

  200. Lecidea atrobrunnea (Ramond ex Lam. & DC.) Schaer. - McCune (1982: 18), Thomson (1997: 327)
  201. Lecidea amaurospoda - Hauck & Spribille (2005: 551)
  202. Lecidea auriculata Th. Fr. - McCune (1982: 18), Thomson (1997: 329)
  203. Lecidea berengeriana (A. Massal.) Th. Fr. - McCune (1982: 18), Thomson (1997: 331)
  204. Lecidea cinnabarina Sommerf. - McCune (1982: 18), Thomson (1997: 336)
  205. Lecidea dolodes Nyl. - McCune (1982: 18)
  206. Lecidea granulosa (Ehrh.) Ach. - McCune (1982: 18)
  207. Lecidea hypopta - Hauck & Spribille (2005: 551)
  208. Lecidea insularis Nyl. - McCune (1982: 18)
  209. Lecidea lapicida (Ach.) Ach. - Thomson (1997: 357)
  210. Lecidea leprarioides - Hauck & Spribille (2005: 551)
  211. Lecidea leucophaea (Flörke ex Rabenh.) Nyl. - Thomson (1997: 359)
  212. Lecidea leucothallina Arnold - Thomson (1997: 360)
  213. Lecidea marginata Schaer. - McCune (1982: 18)
  214. Lecidea nylanderi - Hauck & Spribille (2005: 551)
  215. Lecidea pantherina (Hoffm.) Th. Fr. - McCune (1982: 18)
  216. Lecidea paupercula Th. Fr. - Thomson (1997: 369)
  217. Lecidea tessellata Flörke - Thomson (1997: 384)
  218. Lecidea umbonata (Hepp.) Mudd - Thomson (1997: 389)

    x

  219. Lecidella carpathica Körb. - McCune (1982: 18)
    x
  220. Lecidella elaeochroma (Ach.) M. Choisy - Thomson (1997: 396), Hauck & Spribille (2005: 551)
    x
  221. Lecidella euphorea (Flörke) Hertel - Thomson (1997: 398)
  222. Lecidella glomerulosa (DC.) Choisy - McCune (1982: 18)
  223. Lecidella stigmatea (Ach.) Hert. & Leuckert - McCune (1982: 18)

  224. Lecidoma demissum (Rutstr.) Schneider & Hertel - Thomson (1997: 405)

  225. Lepraria finkii (B. de Lesd. in Hue) R. C. Harris - McCune (1982: 18)
  226. Lepraria jackii - Hauck & Spribille (2005: 551)

  227. Leprocaulon subalbicans (J. M. Lamb) J. M. Lamb & Ward - Thomson (1984: 250)

  228. Leptogium lichenoides (L.) Zahlbr. - McCune (1982: 18), Thomson (1984: 257)
  229. Leptogium minutissiumum (Dicks.) Fr.- Thomson (1984: 258)
  230. Leptogium saturninum (Dicks.) Nyl. - McCune (1982: 18), Thomson (1984: 262)

  231. Letharia columbiana (Nutt.) Thoms. - McCune (1982: 18)
  232. Letharia vulpina (L.) Hue - McCune (1982: 18), Eversman (1982: 211), Hauck & Spribille (2005: 551)

  233. Lichenostigma semiimmersa Hafellner - Hafellner (1999: 514)

  234. Lobaria hallii (Tuck.) Zahlbr. - McCune (1982: 18), Thomson (1984: 266)
  235. Lobaria linita (Ach.) Rabenh. - Thomson (1984: 269)
  236. Lobaria pulmonaria (L.) Hoffm. - McCune (1982: 18)

  237. Lobothallia alphoplaca (Wahlenb. in Ach.) xxx - Thomson (1997: 59 as Aspicilia alphoplaca)
  238. Lobothallia melanaspis (Ach.) xxx - Thomson (1997: 82 as Aspicilia melanaspis)

  239. Lopadium pezizoideum (Ach.) Körb. - McCune (1982: 18)

  240. Massalongia carnosa (Dicks.) Körb. - McCune (1982: 18), Thomson (1984: 274)

    x

  241. Melanelixia subaurifera (Nyl.) O. Blanco et al. - McCune (1982: 18 as Melanelia subaurifera)
    x
  242. Melanohalea elegantula (Zahlbr.) O. Blanco et al. - McCune (1982: 18 as Melanelia elegantula)
    x
  243. Melanohalea exasperatula (Nyl.) O. Blanco et al. - Eversman (1982: 211 as Melanelia exasperatula)
    x
  244. Melanohalea multispora (A. Schneid.) O. Blanco et al. - McCune (1982: 18 as Melanelia multispora)
    x
  245. Melanohalea subelegantula (Essl.) O. Blanco et al. - McCune (1982: 18 as Melanelia subelegantula)
    x
  246. Melanohalea subolivacea (Nyl.) O. Blanco et al. - McCune (1982: 18 as Melanelia subolivacea), Eversman (1982: 211 as Melanelia subolivacea)

    x

  247. Montanelia sorediata (Ach.) Divakar, A. Crespo, Wedin & Essl. - McCune (1982: 18 as Melanelia sorediosa)

    x

  248. Mycobilimbia pilularis (Dicks.) Zahlbr. - McCune (1982: 16 as Bacidia sphaeroides)

    x

  249. Mycobilimbia sabuletorum (Schreb.) Hafellner - McCune (1982: 16 as Bacidia sabuletorum), Thomson (1997: 422)
    x
  250. Mycobilimbia tetramera xxx - McCune (1982: 16 as Bacidia obscurata)

    x

  251. Mycoblastus sanguinarius (L.) Norman - McCune (1982: 18), Thomson (1997: 426), Hauck & Spribille (2005: 551)
    x
  252. Japewia tornoënsis (Nyl.) R. Anders - McCune (1982: 18 as Mycoblastus tornoensis)

    x

  253. Nephroma bellum (Spreng.) Tuck. - McCune (1982: 18), Thomson (1984: 278)
    x
  254. Nephroma helveticum Ach. var. helveticum - McCune (1982: 19), Thomson (1984: 280)
    x
  255. Nephroma parile (Ach.) Ach. - McCune (1982: 19), Thomson (1984: 282)
    x
  256. Nephroma resupinatum (L.) Ach. - McCune (1982: 19), Thomson (1984: 283)

    x

  257. Nodobryoria abbreviata (Müll. Arg.) xxx - McCune (1982: 16 as Bryoria abbreviata), Hauck & Spribille (2005: 551)
    x
  258. Nodobryoria oregana (Tuck.) Common & Brodo - Howe (1911: as Alectoria oregana), McCune (1982: 16 as Bryoria oregana), Hauck & Spribille (2005: 551)
    x
  259. Nodobryoria subdivergens (Dahl) Brodo & D. Hawksw. - Thomson (1984: 66 as Bryoria subdivergens)

    x

  260. Ochrolechia gowardii Brodo - Hauck & Spribille (2005: 551)
    x
  261. Ochrolechia juvenalis Brodo - Hauck & Spribille (2005: 551)
    x
  262. Ochrolechia upsaliensis (L.) A. Massal. - McCune (1982: 19), Thomson (1997: 436)

  263. Omphalodiscus krascheninnikovii (Sav.) Schol. - Thomson (1984: 289)
  264. Omphalodiscus virginis (Schaer.) Schol. - Thomson (1984: 290)

  265. Pachyospora verrucosa (Ach.) A. Massal. - McCune (1982: 19), Thomson (1997: 443)

  266. Pannaria praetermissa Nyl. - McCune (1982: 19)

  267. Parmelia disjuncta Erichs. - Thomson (1984: 299 as Parmelia disjuncta)
  268. Parmelia elegantula (Zahlbr.) Szat. - Thomson (1984: 300 as Parmelia elegantula)
  269. Parmelia exasperatula Nyl. - Thomson (1984: 300 as Parmelia exasperatula)
  270. Parmelia hygrophila - , Hauck & Spribille (2005: 552)
  271. Parmelia omphalodes (L.) Ach. - Thomson (1984: 308)
  272. Parmelia panniformis (Nyl.) Vain. - Thomson (1984: 309)
  273. Parmelia saxatilis (L.) Ach. - McCune (1982: 19), Thomson (1984: 310)
  274. Parmelia skultii Hale - McCune (2007: 76)
  275. Parmelia soredica - Eversman (1982: 211)
  276. Parmelia sorediosa Almb. - Thomson (1984: 312)
  277. Parmelia sphaerosporella Müll. Arg. - McCune (1982: 19 as Parmelia sphaerosporella)
  278. Parmelia stygia var. contrubata (Arn.) Dalla Torre & Sarnth. - Thomson (1984: 315 as Parmelia stygia var. contrubata)
  279. Parmelia subaurifera Nyl. - Thomson (1984: 316 as Parmelia subaurifera)
  280. Parmelia sulcata Tayl. - McCune (1982: 19), Eversman (1982: 211), Thomson (1984: 318), Hauck & Spribille (2005: 552)

  281. Parmeliella praetermissa (Nyl.) James - Thomson (1984: 320)

  282. Parmeliopsis aleurites (Ach.) Nyl. - McCune (1982: 19)
  283. Parmeliopsis ambigua (Wulf.) Nyl. - McCune (1982: 19), Eversman (1982: 211), Thomson (1984: 325), Hauck & Spribille (2005: 552)
  284. Parmeliopsis hyperopta (Ach.) Arnold - McCune (1982: 19), Thomson (1984: 326), Hauck & Spribille (2005: 552)
  285. Parmeliopsis placorodia - Eversman (1982: 211)

  286. Peltigera aphthosa (L.) Willd. - McCune (1982: 19), Thomson (1984: 329)
  287. Peltigera aphthosa var. leucophlebia Nyl. - Thomson (1984: 330)
  288. Peltigera canina (L.) Willd. - McCune (1982: 19)
  289. Peltigera canina (L.) Willd. f. sorediata Schaer. - Thomson (1984: 332)
  290. Peltigera canina (L.) Willd. var. rufescesns (Weis.) Mudd - Thomson (1984: 333)
  291. Peltigera collina (Ach.) Schrad. - McCune (1982: 19), Thomson (1984: 334)
  292. Peltigera elisabethae Gyeln. - McCune (1982: 19)
  293. Peltigera horizontalis (Huds.) Baumg. - Thomson (1984: 337)
  294. Peltigera lepidophora (Nyl.) Vain. - Thomson (1984: 338)
  295. Peltigera leucophlebia (Nyl.) Gyeln. - McCune (1982: 19)
  296. Peltigera malacea (Ach.) Funck. - McCune (1982: 19), Thomson (1984: 339)
  297. Peltigera membranacea (Ach.) Nyl. - Thomson (1984: 340)
  298. Peltigera polydactyla (Neck.) Hoffm. - Thomson (1984: 343)
  299. Peltigera praetextata (Somm.) Zopf - McCune (1982: 19)
  300. Peltigera rufescens (Weis) Humb. - McCune (1982: 19)
  301. Peltigera scabrosa Th. Fr. - Thomson (1984: 344)
  302. Peltigera spuria (Ach.) DC. - McCune (1982: 19)
  303. Peltigera venosa (L.) Baumg. - McCune (1982: 19), Thomson (1984: 345)

  304. Pertusaria amara (Ach.) Nyl. - McCune (1982: 19)
  305. Pertusaria ophthalmiza (Nyl.) Nyl. - McCune (1982: 19), Hauck & Spribille (2005: 552)
  306. Pertusaria stenhammari Hellb. - McCune (1982: 19), Hauck & Spribille (2005: 552)

  307. Phaeocalicium compressulum (Nyl. ex Vainio) Schmidt - McCune (1982: 19), Thomson (1997: 465)

  308. Phaeophyscia constipata (Norrl. & Nyl.) - McCune (1982: 19), Thomson (1984: 347)
  309. Phaeophyscia decolor (Kashi.) Essl. - McCune (1982: 19)
  310. Phaeophyscia endococcinea (Körb.) Moberg - Thomson (1984: 348)
  311. Phaeophyscia sciastra (Ach.) Moberg - McCune (1982: 19), Thomson (1984: 349)

  312. Phaeorrhiza nimbosa (Fr.) Mayrh. & Poelt - Thomson (1997: 467)
  313. Phaeorrhiza sareptana (Tomin) Mayrh. & Poelt - Thomson (1997: 468)

  314. Physcia adscendens (Fr.) Oliv. - McCune (1982: 19), Eversman (1982: 211), Thomson (1984: 352)
  315. Physcia aipolia (Humb.) Fürnrohr. - McCune (1982: 19), Thomson (1984: 353)
  316. Physcia caesia (Hoffm.) Fürnrohr. - McCune (1982: 19), Thomson (1984: 354)
  317. Physcia dubia (Hoffm.) Lettau - McCune (1982: 19), Thomson (1984: 355)
  318. Physcia phaea (Tuck.) Thoms. - McCune (1982: 19)
  319. Physcia semipinnata (Gmel.) Moberg - McCune (1982: 19)
  320. Physcia stellaris (L.) Nyl. - McCune (1982: 19), Eversman (1982: 211)

  321. Physconia detersa (Nyl.) Poelt - Thomson (1984: 359)
  322. Physconia muscigena (Ach.) Poelt - McCune (1982: 19), Thomson (1984: 360)

  323. Placynthiella oligotropha (J. R. Laundon) Coppins & James - Thomson (1997: 474)
  324. Placynthiella uliginosa (Schrad.) Coppins & James - Thomson (1997: 475)

  325. Platismatia glauca (L.) W.L. Culb. & C.F. Culb. - McCune (1982: 19), Eversman (1982: 211), Thomson (1984: 368), Hauck & Spribille (2005: 552)
  326. Platismatia wheeleri Goward, Altermann & Björk - Lumbsch et al. (2011: 99 Type in Vancouver, British Columbia, Canada UBC)

  327. Pleopsidium chlorophanum (Wahlenb. ex Ach.) Zopf - McCune (1982: 16 as Acarospora chlorophana), Thomson (1997: 22 as Acarospora chlorophana)

  328. Polycauliona candelaria (L.) Frödén, Arup & Søchting - McCune (1982: 20 as Xanthoria candelaria), Thomson (1984: 483 as Xanthoria candelaria)
  329. Polycauliona polycarpa (Hoffm.) Frödén, Arup & Søchting - McCune (1982: 20 as Xanthoria polycarpa), Eversman (1982: 211 as Xanthoria polycarpa), Thomson (1984: 487 as Xanthoria polycarpa)

  330. Polychidium muscicola (Sw.) S. Gray - McCune (1982: 19)

  331. Polysporina simplex (Davis) Vezda - Thomson (1997: 486)

  332. Popidia pseudomelinodes Schwab - Thomson (1997: 495)

  333. Protoblastenia rupestris (Scop.) Steiner - Thomson (1997: 503)

    x

  334. Pseudephebe minuscula (Nyl. ex Arnold) Brodo & D. Hawksw. - Imshaug (1957: as Alecotria minuscula), Thomson (1984: 373)
    x
  335. Pseudephebe pubescens (L.) M. Choisy - Imshaug (1957: as Alectoria pubescens), Bamberg & Major (1968: as Alectoria pubescens), McCune (1977: as Alectoria pubescens), Thomson (1984: 374)

    x

  336. Psora decipiens (Hedwig) Hoffm. - Thomson (1997: 507)
  337. Psora globifera (Ach.) A. Massal. - Thomson (1997: 508)
  338. Psora himalayana (Bab.) Timdal - Thomson (1997: 507)
  339. Psora nipponica (Zahlbr.) Schneider - McCune (1982: 19), Thomson (1997: 510)
  340. Psora rubiformis (Ach.) Hook. - McCune (1982: 19)

  341. Psoroma hypnorum (Vahl) Gray - McCune (1982: 19), Thomson (1984: 375)

    x

  342. Pycnora sorophora (Vain.) P. James & Poelt - Hauck & Spribille (2005: 551 as Hypocenomyce sorophora)

  343. Pyrrhospora gowardiana Spribille & Hauck - Spribille & Hauck (2003: 560 Type in Ottawa, Ontario CANL)

  344. Ramalina obtusata (Arnold) Bitt. - McCune (1982: 19)
  345. Ramalina pollinaria (Westr.) Ach. - McCune (1982: 19),
  346. Ramalina thrausta (Ach.) Nyl. - McCune (1982: 19), Thomson (1984: 382)

  347. Ramboldia cinnabarina (Sommerf.) Kalb, Lumbsch & Elix - Hauck & Spribille (2005: 552 as Pyrrhospora cinnabarina)

  348. Rhizocarpon bolanderi (Tuck.) Herre - Thomson (1997: 526)
  349. Rhizocarpon concentricum (Davis) Beltram. - Thomson (1997: 529)
  350. Rhizocarpon disporum (Naeg. ex Hepp) Müll. Arg. - McCune (1982: 19)
  351. Rhizocarpon geminatum Körb. - McCune (1982: 19), Thomson (1997: 537)
  352. Rhizocarpon geographicum (L.) DC. - Thomson (1997: 538)
  353. Rhizocarpon grande (Flörke ex Flot.) Arnold - McCune (1982: 19), Thomson (1997: 539)
  354. Rhizocarpon intermediellum Räsänen - Thomson (1997: 542)
  355. Rhizocarpon macrosporum Räsänen - Thomson (1997: 543)
  356. Rhizocarpon polycarpum (Hepp) Th. Fr. - Thomson (1997: 546)
  357. Rhizocarpon riparium Räsänen - McCune (1982: 19), Thomson (1997: 548)
  358. Rhizocarpon superficiale (Schaerer) Vain. - Thomson (1997: 551)

  359. Rhizoplaca chrysoleuca (Sm.) Zopf - Thomson (1997: 554)
  360. Rhizoplaca melanophthalma (Ramond) Leuck. & Poelt - McCune (1982: 19), Thomson (1997: 555)
  361. Rhizoplaca peltata (Ramond) Leuckert & Poelt - Thomson (1997: 555)

  362. Rinodina archaea (Ach.) Arnold - McCune (1982: 19)
  363. Rinodina aurantiaca Sheard - Sheard & Mayrhofer (2002: 653)
  364. Rinodina exigua (Ach.) S. Gray - McCune (1982: 19)
  365. Rinodina milvina (Wahl. ex Ach.) Th. Fr. - McCune (1982: 19)
  366. Rinodina pyrina (Ach.) Arnold - McCune (1982: 19)
  367. Rinodina turfacea Wahl. ex Ach. - McCune (1982: 19)

    x

  368. Rusavskia elegans (Link) S. Y. Kondr. & Kärnefelt - McCune (1982: 20 as Xanthoria elegans), Thomson (1984: 484 as Xanthoria elegans)
    x
  369. Rusavskia sorediata (Vain.) S. Y. Kondr. & Kärnefelt - McCune (1982: 20 as Xanthoria sorediata)

  370. Sarcogyne regularis Körb. - Thomson (1997: 579)

  371. Solorina crocea (L.) Ach. - Thomson (1984: 387)
  372. Solorina octospora (Arn.) Arn. - Thomson (1984: 389)

  373. Sporastatia testudinea (Ach.) A. Massal. - Thomson (1997: 589)

  374. Staurothele areolata (Ach.) Lettau - Thomson (1997: 592)
  375. Staurothele drummondii (Tuck.) Tuck. - Thomson (1997: 595)
  376. Staurothele fissa (Tayler) Zwackh. - Thomson (1997: 596)

  377. Stereocaulon alpinum Laur. - McCune (1982: 20), Thomson (1984: 400)
  378. Stereocaulon glareosum (Sav.) Magn. - McCune (1982: 20), Thomson (1984: 412)
  379. Stereocaulon tomentosum E. Fries - Thomson (1984: 428)

    x

  380. Tetramelas papillatus (Somm.) Tuck. - McCune (1982: 17 as Buellia papillata)
    x
  381. Tetramelas terricolus (Flörke ex Sommerf.) Lynge - Thomson (1997: 133 erroneously as Buellia geophila)

    x

  382. Thamnolia subuliformis (Ehrh.) W. L. Culb. - Thomson (1984: 438)

    x

  383. Thrombium epigaeum (Pers.) Wallr. - McCune (1982: 20), Thomson (1997: 610)

    x

  384. Toninia aromatica (Turn.) A. Massal. - McCune (1982: 20)
  385. Toninia caeruleonigricans (Lightf.) Th. Fr. - McCune (1982: 20)
  386. Toninia candida (W. A. Weber) Th. Fr. - McCune (1982: 20), Thomson (1997 :614)

    x

  387. Trapeliopsis granulosa (Hoffm.) Lumbsch - Thomson (1997: 624)

    x

  388. Tremolecia atrata (Ach.) Hertel - Thomson (1997: 627)

    x

  389. Tuckermannopsis chlorophylla (Willd.) Hale - McCune (1982: 17 as Cetraria chlorophylla), Eversman (1982: 211 as Cetraria chlorophylla), Thomson (1984: 73 as Cetraria chlorophylla), Hauck & Spribille (2005: 552)
    x
  390. Tuckermannopsis orbata (Nyl.) M. J. Lai - Spribille (2002: 21)

    x

  391. Umbilicaria decussata (Vill.) Zahlbr. - Thomson (1984: 288 as Omphalodiscus decussatus)
    x
  392. Umbilicaria deusta (L.) Baumg. - McCune (1982: 20), Thomson (1984: 449)
    x
  393. Umbilicaria hirsuta (Sw. ex Westr.) Ach. - Thomson (1984: 452)
    x
  394. Umbilicaria hyperborea (Ach.) Hoffm. var. hyperborea - McCune (1982: 20), Thomson (1984: 453)
    x
  395. Umbilicaria phaea Tuck. - McCune (1982: 20), Thomson (1984: 455)
    x
  396. Umbilicaria polyphylla (L.) Baumg. - McCune (1982: 20), Thomson (1984: 457)
    x
  397. Umbilicaria proboscidea (L.) Schrad. - Thomson (1984: 458)
    x
  398. Umbilicaria torrefacta (Lightf.) Schrad. - McCune (1982: 20), Thomson (1984: 459)
    x
  399. Umbilicaria vellea (L.) Ach. - McCune (1982: 20), Thomson (1984: 460)

    x

  400. Usnea cavernosa Tuck. - Thomson (1984: 463)
    x
  401. Usnea fulvoreagens (Räsänen) Räsänen - Eversman (1982: 211)
    x
  402. Usnea glabrata (Ach.) Vain. - Thomson (1984: 466)
  403. Usnea hirta (L.) F. H. Wigg. - McCune (1982: 20), Eversman (1982: 211), Thomson (1984: 466)
  404. Usnea scabrata Nyl. - McCune (1982: 20)
  405. Usnea scabrata Nyl. subsp. nylanderiana Mot. - McCune (1982: 20)
  406. Usnea sorediifera (Arnold) Lynge - McCune (1982: 20)
  407. Usnea subfloridana Stirt. - Thomson (1984: 469)
  408. Usnea substerilis Mot. - Thomson (1984: 470)

    x

  409. Verrucaria margacea (Wahlenb. in Ach.) Wahlenb. - Thomson (1997: 639)
  410. Verrucaria muralis Ach. - McCune (1982: 20)
  411. Verrucaria nigrescens Pers. - Thomson (1997: 642)

    x

  412. Vulpicida canadensis (Räsänen) Räsänen - McCune (1982: 17 as Cetraria canadensis)
  413. Vulpicida pinastri (Scop.) J.-E. Mattsson & M. J. Lai - McCune (1982: 17 as Cetraria pinastri), Eversman (1982: 211), Thomson (1984: 93 as Cetraria pinastri), Hauck & Spribille (2005: 552)
    x
  414. Vulpicida tilesii (Ach.) J.-E. Mattsson & M. J. Lai - Thomson (1984: 95 as Cetraria tilesii), Glew (1994: 83)

  415. Xanthoparmelia chlorochroa (Tuck.) Hale - Thomson (1984: 477)
  416. Xanthoparmelia cumberlandia (Gyeln.) Hale - McCune (1982: 20)
  417. Xanthoparmelia mougeotii (Flot.) Hale - Anderson (1967: 341 as Parmelia mougeotii)
  418. Xanthoparmelia plittii (Gyeln.) Hale - McCune (1982: 20)
  419. Xanthoparmelia taractica (Kremp.) Hale - Thomson (1984: 480)

  420. Xanthomendoza fallax (Hepp ex Arnold) Søchting, Kärnefelt & S. Y. Kondr. - Eversman (1982: 211), Thomson (1984: 486)

  421. Xylographa vitiligo (Ach.) J. R. Laundon - Anderson (1967: 342), Thomson (1997: 647)

    x

  422. Xylopsora friesii (Ach.) Bendiksby & Timdal - McCune (1982: 18 as Hypocenomyce friesii), Thomson (1997: 247 as Hypocenomyce friesii), Hauck & Spribille (2005: 551 as Hypocenomyce friesii)