Checklist of lichens of Alberta (Canada)
31 December 2018

 

  1. Acarospora glaucocarpa (Wahlenb.) Körb. - Bird (1973: 395 First record), John (1989: 108 as Acarospora cervina var. glaucocarpa), Thomson & Ahti (1994: 142), Thomson (1997: 25)
  2. Acarospora fuscata (Schrad.) Arnold - John (1989: 108)
  3. Acarospora schleicheri (Ach.) A. Massal. - Thomson (1997: 33)
  4. Acarospora strigata (Nyl.) Jatta - Bird (1973: 396)
  5. Acarospora veronensis A. Massal. - Bird (1973: 396)

  6. Acolium inquinans (Sm.) A. Massal. - Bird (1973: 401 as Cyphelium inquinans First record), Thomson (1997: 212 as Cyphelium inquinans)

  7. Adelolecia pilati (Hepp) Hertel & Hafellner - Thomson & Ahti (1994: 142)

  8. Alectoria ochroleuca (Hoffm.) A. Massal. - Thomson (1984: 37), Thomson & Ahti (1994: 142)
  9. Alectoria sarmentosa (Ach.) Ach. - Bird (1973: 398), Achuff & La Roi (1977: 143)
  10. Alectoria vexillifera (Nyl.) Stizenb. - Thomson (1984: 38)

  11. Allantoparmelia alpicola (Th. Fr.) Essl. - Thomson (1984: 299 as Parmelia alpicola)

  12. Allocetraria madreporiformis (Ach.) Kärnefelt & A. Thell - Thomson (1984: 206 as Dactylina madreporiformis)

  13. Amandinea punctata (Hoffm.) Coppins & Scheid. - Bird (1973: 399 as Buellia punctata), Thomson (1997: 138 as Buellia punctata)

  14. Amundsenia approximata (Lynge) Søchting, Arup & Frödén - Thomson (1997: 151 as Caloplaca approximata)

  15. Arctoparmelia centrifuga (L.) Hale - John (1989: 108)
  16. Arctoparmelia incurva (Pers.) Hale - John (1989: 108)
  17. Arctoparmelia subcentrifuga (Oxner) Hale - John (1989: 108)

  18. Arthonia patellulata Nyl. - Bird (1973: 401 First record)

  19. Arthrorhaphis alpina (Schaer.) R. Sant. - John (1989: 108)

  20. Aspicilia anseris (Lynge) J. W. Thomson - Thomson (1997: 61)
  21. Aspicilia candida (Anzi) Hue - Thomson (1997: 67)
  22. Aspicilia cinerea (L.) Körb. - John (1989: 108), Thomson (1997: 68)
  23. Aspicilia rolleana Hue - Bird (1973: 396 as Lecanora rolleana First record)
  24. Aspicilia subradians (Nyl.) Hue - Thomson (1997: 94)
  25. Aspicilia supertegens Arnold - Thomson (1997: 95)

  26. Athallia holocarpa (Hoffm.) Wade - Bird (1973: 400 as Caloplaca holocarpa), Douglas et al. (1981: 1457 as Caloplaca holocarpa), John (1989: 108 as Caloplaca holocarpa), Thomson (1997: 164 as Caloplaca holocarpa)

  27. Bacidia bagliettoana (A. Massal. & De Not.) Jatta - Bird (1973: 393 First record)

  28. Baeomyces rufus (Huds.) Rebent. - Thomson (1984: 52)

  29. Bellemerea alpina (Sommerf.) Clauz. & Roux - John (1989: 108), Thomson (1997: 115)
  30. Bellemerea cinereorufescens (Ach.) Clauz. & Roux - John (1989: 108), Thomson (1997: 116)

  31. Biatora globulosa (Flörke) Th. Fr. - Bird (1973: 393 as Catillaria globulosa First record)
  32. Biatora vernalis (L.) Fr. - Bird (1973: 394 as Lecidea vernalis), Douglas et al. (1981: 1458 as Lecidea vernalis), Thomson (1997: 389 as Lecidea vernalis)

  33. Biatorella hemisphaerica Anzi - Thomson (1997: 119)

  34. Bilimbia lobulata (Sommerf.) Hafellner & Coppins - Bird (1973: 394 as Toninia lobulata First record), Thomson (1997: 617 as Toninia lobulata)
  35. Bilimbia sabuletorum (Schreb.) Arnold - Thomson (1997: 422 as Mycobilimbia sabuletorum)

  36. Blennothallia crispa (Huds.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 183 as Collema crispum)

  37. Brodoa oroarctica (Krog) Goward - Thomson (1984: 239 as Hypogymnia oroarctica), John (1989: 108)

  38. Bryobilimbia hypnorum (Lib.) Fryday, Printzen & S. Ekman - Thomson (1997: 351 as Lecidea hypnorum)

  39. Bryonora castanea (Hepp) Poelt - Thomson (1997: 122)

  40. Bryoplaca jungermanniae (Vahl) Søchting, Frödén & Arup - Bird (1973: 400 as Caloplaca jungermanniae), Thomson (1997: 166 as Caloplaca jungermanniae)
  41. Bryoplaca sinapisperma (DC.) Søchting, Frödén & Arup - Bird (1973: 400 as Blastenia sinapisperma), Thomson (1997: 171 as Caloplaca sinapisperma)
  42. Bryoplaca tetraspora (Nyl.) Søchting, Frödén & Arup - John (1989: 108 as Caloplaca tetraspora), Thomson (1997: 172 as Caloplaca tetraspora)

  43. Bryoria capillaris (Ach.) Brodo & D. Hawksw. - Thomson (1984: 55)
  44. Bryoria chalybeiformis (L.) Brodo & D. Hawksw. - Bird (1973: 398 as Alectoria chalybeiformis), Thomson (1984: 56)
  45. Bryoria fremontii (Tuck.) Brodo & D. Hawksw. - Bird (1973: 398 as Alectoria fremontii), Spribille (2002: 20 as Bryoria tortuosa)
  46. Bryoria furcellata (Fr.) Brodo & D. Hawksw. - Douglas et al. (1981: 1457)
  47. Bryoria fuscescens (Gyeln.) Brodo & D. Hawksw. - Douglas et al. (1981: 1457), Addison (1984: 299), Thomson (1984: 57)
  48. Bryoria glabra (Mot.) Brodo & D. Hawksw. - Bird (1973: 398 as Alectoria glabra), Thomson (1984: 58)
  49. Bryoria implexa (Hoffm.) Brodo & D. Hawksw. - Bird (1973: 398 as Alectoria implexa)
  50. Bryoria lanestris (Ach.) Brodo & D. Hawksw. - Douglas et al. (1981: 1457), Thomson (1984: 59)
  51. Bryoria nadvornikiana (Gyel.) Brodo & D. Hawksw. - Thomson (1984: 61)
  52. Bryoria pseudofuscescens (Gyelnik) Brodo & D. Hawksw. - Achuff & La Roi (1977: 143 as Alectoria pseudofuscescens)
  53. Bryoria simplicior (Vain.) Brodo & D. Hawksw. - Thomson (1984: 65)
  54. Bryoria vrangiana (Gyeln.) Brodo & D. Hawksw. - Thomson (1984: 69)

  55. Buellia disciformis (Fr.) Mudd - Bird (1973: 399), Thomson (1997: 129)
  56. Buellia dispersa A. Massal. - Bird (1973: 399 as Buellia retrovertens First record)
  57. Buellia elegans Poelt - Thomson (1997: 130)
  58. Buellia epigaea (Hoffm.) Tuck. - Bird (1973: 399)
  59. Buellia erubescens Arnold - Bird (1973: 399 as Buellia zahlbruckneri First record), Douglas et al. (1981: 1457 as Buellia zahlbruckneri), Thomson (1997: 131)
  60. Buellia lacteoidea B. de Lesd. - John (1989: 108)
  61. Buellia vilis Th. Fr. - Thomson (1997: 141)

  62. Calicium pinicola (Tibell) M. Prieto & Wedin - Spribille (2002: 21 as Cyphelium pinicola)
  63. Calicium salicinum Pers. - Bird (1973: 401 First record), Douglas et al. (1981: 1457)
  64. Calicium tigillare (Ach.) Pers. - Bird (1973: 401 as Cyphelium tigillare), Thomson (1997: 214 as Cyphelium tigillare)
  65. Calicium trabinellum (Ach.) Ach. - Thomson (1997: 145)
  66. Calicium viride Pers. - Bird (1973: 401 First record), Thomson (1997: 146)

  67. Callome multipartita (Sm.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 188 as Collema multipartitum)

  68. Caloplaca cerina (Ehrh.) Th. Fr. var. cerina - Bird (1973: 400), Douglas et al. (1981: 1457), John (1989: 108), Thomson (1997: 154)
  69. Caloplaca cerina (Ehrh.) Th. Fr. var. chloroleuca (Sm.) Th. Fr. - Bird (1973: 400 as Caloplaca stillicidiorum), John (1989: 108 as Caloplaca stillicidiorum), Thomson (1997: 172 as Caloplaca stillicidiorum)
  70. Caloplaca epithallina Lynge - John (1989: 108)
  71. Caloplaca fraudans (Th. Fr.) Oliv. - Douglas et al. (1981: 1457), Thomson (1997: 162)
  72. Caloplaca saxicola (Hoffm.) Nordin - Thomson (1997: 169)
  73. Caloplaca tornoensis H. Magn. - Thomson (1997: 175)

  74. Calvitimela armeniaca (DC. in Lam. & DC.) Hafellner - Thomson (1997: 60 as Tephromela armeniaca)

  75. Candelaria concolor (Dicks.) B. Stein - Bird (1973: 396)

  76. Candelariella aurella (Hoffm.) Zahlbr. - Bird (1973: 397), Thomson (1997: 182)
  77. Candelariella canadensis H. Magn. - Westberg (2010: 121)
  78. Candelariella citrina B. de Lesd. - Thomson (1997: 187 as Candelariella terrigena)
  79. Candelariella efflorescens R.C. Harris & W.R. Buck - Thomson (1997: 184)
  80. Candelariella vitellina (Hoffm.) Müll. Arg. f. vitellina - Bird (1973: 397), Douglas et al. (1981: 1457), John (1989: 108), Thomson (1997: 189)

  81. Catapyrenium cinereum (Pers.) Körb. - Thomson (1984: 211 as Dermatocarpon cinereum), Thomson (1984: 215 as Dermatocarpon hepaticum)

  82. Catillaria glauconigrans (Tuck.) Hasse - Bird (1973: 393)

  83. Cetraria aculeata (Schreb.) Fr. - Thomson (1984: 198 as Cornicularia aculeata)
  84. Cetraria ericetorum Opiz - Bird (1973: 397), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1457), Thomson (1984: 79)
  85. Cetraria islandica (L.) Ach. - Thomson (1984: 84)

  86. Cetrariella commixta (Nyl.) A. Thell & Kärnefelt - Bird (1973: 397 as Cetraria commixta), Thomson (1984: 75 as Cetraria commixta)

  87. Chaenotheca chrysocephala (Turner ex Ach.) Th. Fr. - Douglas et al. (1981: 1457), Thomson (1997: 205)
  88. Chaenotheca furfuracea (L.) Tibell - Douglas et al. (1981: 1458 as Coniocybe furfuracea), Thomson (1997: 210 as Coniocybe furfuracea)

  89. Circinaria caesiocinerea (Nyl. ex Malbr.) A. Nordin, S. Savić & Tibell - John (1989: 108 as Aspicilia caesiocinerea), Thomson (1997: 65 as Aspicilia caesiocinerea)
  90. Circinaria hispida (Mereschk.) A. Nordin, Savic & Tibell - Bird (1973: 396 as Agrestia hispida)

  91. Cladonia amaurocraea (Flörke) Schaer. - Douglas et al. (1981: 1457), Thomson (1984: 107)
  92. Cladonia arbuscula (Wallr.) Rabenh. - Bird (1973: 394 as Cladina arbuscula), Achuff & La Roi (1977: 143 as Cladina arbuscula), Douglas et al. (1981: 1457 as Cladina arbuscula), Thomson (1984: 110)
  93. Cladonia bacillaris (Ach.) Nyl. - Bird (1973: 394)
  94. Cladonia bacilliformis (Nyl.) Sarnth. - Thomson (1984: 112)
  95. Cladonia bellidiflora (Ach.) Schaer. - Douglas et al. (1981: 1457)
  96. Cladonia botrytes (K. G. Hagen) Willd. - Bird (1973: 394), Douglas et al. (1981: 1457), Thomson (1984: 114)
  97. Cladonia cariosa (Ach.) Spreng. - Bird (1973: 394), Douglas et al. (1981: 1457), Thomson (1984: 116)
  98. Cladonia carneola (Fr.) Fr. - Thomson (1984: 117)
  99. Cladonia cenotea (Ach.) Schaer. - Bird (1973: 394), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1457), Thomson (1984: 118)
  100. Cladonia chlorophaea (Flörke ex Sommerf.) Spreng. - Bird (1973: 394), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1457), Thomson (1984: 119)
  101. Cladonia coccifera (L.) Willd. - Bird (1973: 395), Douglas et al. (1981: 1458), Thomson (1984: 121)
  102. Cladonia coniocraea (Flörke) Spreng. - Bird (1973: 395), Douglas et al. (1981: 1458), Thomson (1984: 122)
  103. Cladonia cornuta (L.) Hoffm. - Bird (1973: 395), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1458), Thomson (1984: 124)
  104. Cladonia crispata (Ach.) Flot. - Douglas et al. (1981: 1458), Thomson (1984: 125)
  105. Cladonia cristatella Tuck. - Bird (1973: 395), Douglas et al. (1981: 1458)
  106. Cladonia cryptochlorophaea Asahina - Thomson (1984: 126)
  107. Cladonia cyanipes (Sommerf.) Nyl. - Thomson (1984: 127)
  108. Cladonia deformis (L.) Hoffm. - Bird (1973: 395), Douglas et al. (1981: 1458), Thomson (1984: 129)
  109. Cladonia digitata (L.) Hoffm. - Thomson (1984: 131)
  110. Cladonia ecmocyna Leight. - Bird (1973: 395), Thomson (1984: 132)
  111. Cladonia fimbriata (L.) Fr. - Bird (1973: 395), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1458), Thomson (1984: 133)
  112. Cladonia furcata (Huds.) Schrad. - Bird (1973: 395), Douglas et al. (1981: 1458)
  113. Cladonia glauca Flörke - Thomson (1984: 135)
  114. Cladonia gracilis (L.) Willd. subsp. gracilis - Achuff & La Roi (1977: 143), Douglas et al. (1981: 1458), Thomson (1984: 137)
  115. Cladonia gracilis (L.) Willd. subsp. turbinata (Ach.) Ahti - Thomson (1984: 136)
  116. Cladonia grayi G. Merr. ex Sandst. - Thomson (1984: 138)
  117. Cladonia macilenta Hoffm. - Thomson (1984: 111 as Cladonia bacillaris)
  118. Cladonia macrophylla (Schaer.) Stenham. - Douglas et al. (1981: 1458), Thomson (1984: 141)
  119. Cladonia macrophyllodes Nyl. - Bird (1973: 395), Thomson (1984: 143)
  120. Cladonia mitis Sandst. - Bird (1973: 394 as Cladina mitis), Achuff & La Roi (1977: 143 as Cladina mitis), Douglas et al. (1981: 1457 as Cladina mitis), Thomson (1984: 148)
  121. Cladonia multiformis Merr. - Bird (1973: 395), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1458), Thomson (1984: 149)
  122. Cladonia phyllophora Ehrh. ex Hoffm. - Bird (1973: 395), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1458), Thomson (1984: 153), John (1989: 108)
  123. Cladonia pleurota (Flörke) Schaer. - Bird (1973: 395), Thomson (1984: 154)
  124. Cladonia pocillum (Ach.) Rich. - Bird (1973: 395), Thomson (1984: 156)
  125. Cladonia pyxidata (L.) Hoffm. - Bird (1973: 395), Douglas et al. (1981: 1458), Thomson (1984: 158), John (1989: 108)
  126. Cladonia ramulosa (Flörke) Th. Fr. - Douglas et al. (1981: 1458 as Cladonia pityrea)
  127. Cladonia rangiferina (L.) Wigg. - Bird (1973: 394 as Cladina rangiferina), Douglas et al. (1981: 1457 as Cladina rangiferina), Thomson (1984: 159)
  128. Cladonia scabriuscula (Del. in Duby) Nyl. - Bird (1973: 395 First record), Thomson (1984: 160)
  129. Cladonia squamosa (Scop.) Hoffm. - Thomson (1984: 161)
  130. Cladonia stellaris (Opiz) Pouzar & Vezda - Achuff & La Roi (1977: 143 as Cladina alpestris), Douglas et al. (1981: 1457 as Cladina stellaris), Thomson (1984: 163), Thomson (1984: 104 as Cladonia aberrans)
  131. Cladonia straminea (Sommerf.) Flörke - Thomson (1984: 147 erroneously as Cladonia metacorallifera fide Timdal & Tønsberg 2012 kontrollieren)
  132. Cladonia stricta (Nyl.) Nyl. - Thomson (1984: 164)
  133. Cladonia subfurcata (Nyl.) Arnold - Thomson (1984: 166)
  134. Cladonia subulata (L.) Wigg. - Bird (1973: 395), Douglas et al. (1981: 1458), Thomson (1984: 168)
  135. Cladonia sulphurina (Michx.) Fr. - Bird (1973: 395 as Cladonia gonecha), Douglas et al. (1981: 1458), Thomson (1984: 169)
  136. Cladonia symphycarpa (Ach.) Fr. - Thomson (1984: 170)
  137. Cladonia turgida Ehrh. ex Hoffm. - Thomson (1984: 172)
  138. Cladonia uncialis (L.) Wigg. - Bird (1973: 395), Douglas et al. (1981: 1458), Thomson (1984: 173)
  139. Cladonia verticillata (Hoffm.) Schaer. - Bird (1973: 395), Douglas et al. (1981: 1458), Thomson (1984: 174)

  140. Collema flaccidum (Ach.) Ach. - Bird (1966: 3), Thomson (1984: 186)
  141. Collema nigrescens (Huds.) DC. - Bird (1973: 392 First record)

  142. Dactylina arctica (Hook. f.) Nyl. - Thomson (1984: 203)
  143. Dactylina beringica C. D. Bird & J. W. Thomson - Thomson (1984: 204)
  144. Dactylina ramulosa (Hook. f.) Tuck. - Thomson (1984: 207)

  145. Dermatocarpon luridum (With.) J. R. Laundon - Thomson (1984: 213 as Dermatocarpon fluviatile)
  146. Dermatocarpon intestiniforme (Körb.) Hasse - Thomson (1984: 216)
  147. Dermatocarpon miniatum (L.) W. Mann - Bird (1973: 401), Thomson (1984: 219)
  148. Dermatocarpon moulinsii (Mont.) Zahlbr. - Douglas et al. (1981: 1458)

  149. Dimelaena oreina (Ach.) Norman - John (1989: 108), Thomson (1997: 216)

  150. Diploschistes muscorum (Scop.) R. Sant. - Thomson (1997: 218)
  151. Diploschistes scruposus (Schreb.) Norman - John (1989: 108), Thomson (1997: 218)

  152. Enchylium bachmanianum (Fink) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 179 as Collema bachmanianum)
  153. Enchylium limosum (Ach.) Otálora, P. M. Jørg. & Wedin - Bird (1966: 3 as Collema limosum)
  154. Enchylium polycarpon (Hoffm.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 191 as Collema polycarpon)
  155. Enchylium tenax (Sw.) Gray - Bird (1966: 3 as Collema tenax), Bird (1973: 392 as Collema tenax), Thomson (1984: 192 as Collema tenax)

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

  157. Ephebe lanata (L.) Vain. - Bird (1966: 3)

  158. Esslingeriana idahoensis (Essl.) Hale & M. J. Lai - Spribille (2002: 21)

  159. Evernia divaricata (L.) Ach. - Bird (1973: 398), Thomson (1984: 228 alpine variant)
  160. Evernia mesomorpha Nyl. - Bird (1973: 398), Douglas et al. (1981: 1458), Addison (1984: 299), Thomson (1984: 229)

  161. Farnoldia hypocrita (A. Massal.) Fröberg - Thomson (1997: 353 as Lecidea hypocrita)
  162. Farnoldia jurana (Schaer.) Hertel - Thomson (1997: 225)
  163. Farnoldia micropsis (A. Massal.) Hertel - Thomson (1997: 226)

  164. Flavocetraria nivalis (L.) Kärnefelt & A. Thell - Bird (1973: 397 as Cetraria nivalis), Achuff & La Roi (1977: 143 as Cetraria nivalis), Douglas et al. (1981: 1457 as Cetraria nivalis), Thomson (1984: 92 as Cetraria nivalis)

  165. Flavoplaca citrina (Hoffm.) Arup, Frödén & Søchting - Thomson (1997: 155 as Caloplaca citrina)

  166. Flavopunctelia flaventior (Stirt.) Hale - Bird (1973: 397 as Parmelia flaventior), Douglas et al. (1981: 1458 as Parmelia flaventior)

  167. Fulgidea oligospora (Timdal) Bendiksby & Timdal - Spribille (2002: 21 as Hypocenomyce oligospora)

  168. Fuscopannaria praetermissa (Nyl.) P. M. Jørg. - Bird (1966: 4), Thomson (1984: 320 as Parmelia praetermissa)

  169. Gowardia nigricans (Ach.) Nyl. - Thomson & Ahti (1994: 142 as Alectoria nigricans)

  170. Gyalidea asteriscus (Anzi) Aptroot & Lücking - Bird (1973: 393 as Solorinella asteriscus First record)

  171. Gyalolechia bracteata (Hoffm.) A. Massal. - Bird (1973: 400 as Fulgensia bracteata), Thomson (1997: 228 as Fulgensia bracteata)
  172. Gyalolechia flavovirescens (Wulf.) Søchting, Frödén & Arup - Thomson (1997: 161 as Caloplaca flavovirescens)
  173. Gyalolechia flavorubescens (Hudson) Søchting, Frödén & Arup - Bird (1973: 400 as Caloplaca aurantiaca)
  174. Gyalolechia fulgens (Sw.) Søchting, Frödén & Arup - Bird (1973: 400 as Fulgensia fulgens), Thomson (1997: 229 as Fulgensia fulgens)

  175. Henrica theleodes (Sommerf.) Savic, Tibell & Nav.-Ros. - Thomson (1997: 484 as Polyblastia theleodes)

  176. Heterodermia speciosa (Wulfen) Trevis. - Bird (1973: 399 as Anaptychia speciosa First record), Achuff & La Roi (1977: 143 as Anaptychia speciosa), Douglas et al. (1981: 1458 as Heterodermia tremulans)

  177. Hypocenomyce scalaris (Ach. ex Lilj.) M. Choisy - Bird (1973: 394 as Lecidea scalaris First record), Thomson (1997: 248), Douglas et al. (1981: 1458 as Lecidea scalaris)

  178. Hypogymnia austerodes (Nyl.) Räsänen - Bird (1973: 397), Douglas et al. (1981: 1458), Thomson (1984: 237 First record), John (1989: 108)
  179. Hypogymnia bitteri (Lynge) Ahti - Bird (1973: 397), Thomson (1984: 238)
  180. Hypogymnia occidentalis L. H. Pike - Spribille (2002: 21)
  181. Hypogymnia physodes (L.) Nyl. - Bird (1973: 397), Douglas et al. (1981: 1458), Addison (1984: 299), Thomson (1984: 241)
  182. Hypogymnia subobscura (Vain.) Poelt - Thomson (1984: 424)
  183. Hypogymnia tubulosa (Schaer.) Hav. - Bird (1973: 397), Achuff & La Roi (1977: 143)

  184. Icmadophila ericetorum (L.) Zahlbr. - Bird (1973: 396), Thomson (1997: 249), Douglas et al. (1981: 1458)

  185. Imshaugia aleurites (Ach.) S. L. F. Mey. - Bird (1973: 398 as Parmeliopsis aleurites), Douglas et al. (1981: 1459 as Parmeliopsis aleurites), Thomson (1984: 323 as Parmeliopsis aleurites)

  186. Kaernefeltia merrillii (Du Rietz) A. Thell & Goward - Bird (1973: 397 as Cetraria merrillii)

  187. Lasallia pensylvanica (Hoffm.) Llano - John (1989: 108)

  188. Lathagrium auriforme (With.) Otálora, P. M. Jørg. & Wedin - Bird (1973: 392 as Collema auriculatum First record)
  189. Lathagrium cristatum (L.) Otálora, P. M. Jørg. & Wedin - Bird (1966: 3 as Collema cristatum), Thomson (1984: 184 as Collema cristatum)
  190. Lathagrium fuscovirens (Ach.) Otálora, P. M. Jørg. & Wedin - Bird (1966: 3 as Collema tuniforme), Thomson (1984: 193 as Collema tuniforme)
  191. Lathagrium undulatum (Laur. ex Flot.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 194 as Collema undulatum)

  192. Lecanora allophana (Ach.) Nyl. - Bird (1973: 396), Thomson (1997: 264)
  193. Lecanora argopholis (Ach.) Ach. - Thomson (1997: 267)
  194. Lecanora cadubriae (A. Massal.) Hedl. - Bird (1973: 396), Thomson (1997: 270)
  195. Lecanora cenisia Ach. - John (1989: 108), Thomson (1997: 272)
  196. Lecanora chlarotera Nyl. - Bird (1973: 396 as Lecanora rugosella), Thomson (1997: 273), Thomson (1997: 301 as Lecanora rugosella)
  197. Lecanora circumborealis Brodo & Vitik. - Bird (1973: 396 as Lecanora coilocarpa), Thomson (1997: 274)
  198. Lecanora epibryon (Ach.) Ach. - Bird (1973: 396), Thomson (1997: 279), Douglas et al. (1981: 1458)
  199. Lecanora expallens Ach. - Thomson (1997: 280)
  200. Lecanora frustulosa (Dicks.) Ach. - John (1989: 108)
  201. Lecanora fuscescens (Sommerf.) Nyl. - Bird (1973: 393 as Lecidea fuscescens), Thomson (1997: 283)
  202. Lecanora hypoptoides (Nyl.) Nyl. - Douglas et al. (1981: 1458)
  203. Lecanora impudens Degel. - Bird (1973: 396), Thomson (1997: 287)
  204. Lecanora intricata (Ach.) Ach. - John (1989: 108), Thomson (1997: 288)
  205. Lecanora marginata (Schaer.) Hertel & Rambold- Thomson (1997: 291)
  206. Lecanora polytropa (Ehrh.) Rabenh. - John (1989: 108 as Lecanora polytropa), Thomson (1997: 299 as Lecanora polytropa), Douglas et al. (1981: 1458 as Lecanora polytropa)
  207. Lecanora pulicaris (Pers.) Ach. - Thomson (1997: 301), Douglas et al. (1981: 1458)
  208. Lecanora rupicola (L.) Zahlbr. - Bird (1973: 396), John (1989: 108), Thomson (1997: 303)
  209. Lecanora subintricata (Nyl.) Th. Fr. - Thomson (1997: 307)
  210. Lecanora subrugosa Nyl. - Thomson (1997: 308)
  211. Lecanora symmicta (Ach.) Ach. - Bird (1973: 394 as Lecidea symmicta), Thomson (1997: 309)
  212. Lecanora varia (Hoffm.) Ach. - Bird (1973: 396), Thomson (1997: 311)

  213. Lecidea atrobrunnea (DC.) Schaer. - Bird (1973: 393), John (1989: 108), Thomson (1997: 327)
  214. Lecidea auriculata Th. Fr. - John (1989: 108), Thomson (1997: 329)
  215. Lecidea confluens (Weber) Ach. - John (1989: 108), Thomson (1997: 339)
  216. Lecidea laboriosa Müll. Arg. - Thomson (1997: 358 as Lecidea leptoboloides)
  217. Lecidea lapicida (Ach.) Ach. var. lapicida - Bird (1973: 393 First record), John (1989: 108)
  218. Lecidea leucothallina Arnold - Thomson (1997: 360)
  219. Lecidea lithophila (Ach.) Ach. - John (1989: 108), Thomson (1997: 362)
  220. Lecidea paupercula Th. Fr. - John (1989: 108), Thomson (1997: 369)
  221. Lecidea plana (J. Lahm) Nyl. - John (1989: 108)
  222. Lecidea tessellata Flörke - John (1989: 108), Thomson (1997: 384 as Lecidea tessellata)
  223. Lecidea umbonata (Hepp.) Mudd - Thomson (1997: 389)

  224. Lecidella carpathica Körb. - John (1989: 108), Thomson (1997: 395)
  225. Lecidella elaeochroma (Ach.) M. Choisy - Thomson (1997: 396), Thomson (1997: 398 as Lecidella euphorea)
  226. Lecidella euphorea (Flörke) Hertel - Bird (1973: 393 as Lecidea glomerulosa), Douglas et al. (1981: 1458 as Lecidella glomerulosa)
  227. Lecidella patavina (A. Massal.) Knoph & Leuckert - Thomson (1997: 401 as Lecidella spitsbergensis)
  228. Lecidella stigmatea (Ach.) Hertel & Leuckert - Bird (1973: 394 as Lecidea stigmatea), John (1989: 108), Thomson (1997: 402)
  229. Lecidella wulfenii (Hepp) Körb. - Thomson (1997: 403)

  230. Lecidoma demissum (Rutstr.) Gotth. Schneid. & Hertel - Thomson (1997: 405)

  231. Lempholemma radiatum (Sommerf.) Henssen - Thomson (1997: 407)

  232. Lepraria membranacea (Dicks.) Vain. - Bird (1973: 401)
  233. Lepraria neglecta (Nyl.) Lettau - Bird (1973: 401 First record), John (1989: 108)
  234. Lepraria subalbicans (I.M. Lamb) Lendemer & B.P. Hodk. - Thomson (1984: 250 as Leprocaulon subalbicans), John (1989: 108 as Leprocaulon subalbicans)

  235. Leptogium furfuraceum (Harm.) Sierk. - Bird (1973: 392 First record)
  236. Leptogium hirsutum Sierk - Bird (1966: 3)
  237. Leptogium saturninum (Dicks.) Nyl. - Bird (1966: 3), Bird (1973: 392), Douglas et al. (1981: 1458), Thomson (1984: 262)

  238. Letharia columbiana (Nutt.) J. W. Thomson - Bird (1973: 398)
  239. Letharia vulpina (L.) Hue - Bird (1973: 398)

  240. Lobaria hallii (Tuck.) Zahlbr. - Thomson (1984: 266)
  241. Lobaria linita (Ach.) Rabenh. - Bird (1973: 393), Thomson (1984: 269)
  242. Lobaria pulmonaria (L.) Hoffm. - Achuff & La Roi (1977: 143), Douglas et al. (1981: 1458)

  243. Lobothallia alphoplaca (Wahlenb. in Ach.) Hafellner- Thomson (1997: 59 as Aspicilia alphoplaca)

  244. Lopadium pezizoideum (Ach.) Körb. - Thomson (1997: 411)

  245. Megaspora verrucosa (Ach.) Hafellner & V. Wirth - Thomson (1997: 443 as Pachyospora verrucosa)

  246. Melanelia hepatizon (Ach.) A. Thell - Bird (1973: 397 as Cetraria hepatizon), Thomson (1984: 82 as Cetraria hepatizon), John (1989: 108 as Cetraria hepatizon)
  247. Melanelia stygia (L.) Essl. - Thomson (1984: 315 as Parmelia stygia var. conturbata), John (1989: 108)

  248. Melanelixia albertana (Ahti) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Bird (1973: 397 as Parmelia albertana), Douglas et al. (1981: 1458 as Parmelia albertana)
  249. Melanelixia subaurifera (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Bird (1973: 397 as Parmelia subaurifera First record), Douglas et al. (1981: 1459 as Parmelia subaurifera), Thomson (1984: 316 as Parmelia subaurifera)

  250. Melanohalea elegantula (Zahlbr.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Thomson (1984: 300 as Parmelia elegantula)
  251. Melanohalea exasperatula (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Bird (1973: 397 as Parmelia exasperatula), Achuff & La Roi (1977: 143 as Parmelia exasperatula), Thomson (1984: 300 as Parmelia exasperatula)
  252. Melanohalea infumata (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Bird (1973: 397 as Parmelia infumata), Thomson (1984: 304 as Parmelia infumata)
  253. Melanohalea olivacea (L.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Thomson (1984: 306 as Parmelia olivacea)
  254. Melanohalea olivaceoides (Krog) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Thomson (1984: 307 as Parmelia olivaceoides)
  255. Melanohalea septentrionalis (Lynge) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Bird (1973: 397 as Parmelia septentrionalis), Achuff & La Roi (1977: 143 as Parmelia septentrionalis), Douglas et al. (1981: 1458 as Parmelia septentrionalis), Thomson (1984: 311 as Parmelia septentrionalis)
  256. Melanohalea subolivacea (Nyl. ex Hasse) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Bird (1973: 398 as Parmelia subolivacea)
  257. Melanohalea trabeculata (Ahti) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Douglas et al. (1981: 1458 as Parmelia trabeculata)

  258. Micarea melaena (Nyl.) Hedl. - Bird (1973: 401 First record), Thomson (1997: 419)

  259. Montanelia disjuncta (Erichsen) Divakar, A. Crespo, Wedin & Essl. - Thomson (1984: 299 as Parmelia disjuncta), John (1989: 108 as Melanelia granulosa)
  260. Montanelia panniformis (Nyl.) Divakar, A. Crespo, Wedin & Essl. - John (1989: 108 as Melanelia panniformis)
  261. Montanelia sorediata (Ach.) Divakar, A. Crespo, Wedin & Essl. - Thomson (1984: 312 as Parmelia sorediosa), John (1989: 108 as Melanelia sorediata)
  262. Montanelia tominii (Oxner) Divakar, A. Crespo, Wedin & Essl. - Thomson (1984: 317 as Parmelia substygia)

  263. Mycobilimbia berengeriana (A. Massal.) Hafellner & V. Wirth - Thomson (1997: 331 as Lecidea berengeriana)
  264. Mycobilimbia pilularis (Hepp ex Körb.) Hafellner & Türk - Bird (1973: 393 as Bacidia sphaeroides), Thomson (1997: 110 as Bacidia sphaeroides), Douglas et al. (1981: 1457 as Bacidia sphaeroides)
  265. Mycobilimbia tetramera (De Not.) Vitik., Ahti, Kuusinen, Lommi & T. Ulvinen ex Hafellner & Türk - Bird (1973: 393 as Bacidia obscurata First record), Thomson (1997: 422 as Mycobilimbia obscurata), Douglas et al. (1981: 1457 as Bacidia obscurata)

  266. Mycoblastus affinis (Schaer.) T. Schauer - Bird (1973: 394 First record)
  267. Mycoblastus sanguinarius (L.) Norman - Thomson (1997: 426)

  268. Myriolecis hagenii (Ach.) Ach. - Bird (1973: 396 as Lecanora hagenii), Thomson (1997: 286 as Lecanora hagenii)
  269. Myriolecis zosterae (Ach.) Sliwa, Zhao Xin & Lumbsch - Thomson (1997: 312 as Lecanora zosterae)

  270. Myriospora smaragdula (Wahlenb.) K. Knudsen & B. Abbott - Thomson & Ahti (1994: 142 as Acarospora smaragdula)

  271. Nephroma arcticum (L.) Torss. - Bird (1966: 4), Bird (1973: 393), Thomson (1984: 277)
  272. Nephroma expallidum (Nyl.) Nyl. - Bird (1966: 4), Bird (1973: 393), Thomson (1984: 279)
  273. Nephroma parile (Ach.) Ach. - Bird (1966: 4), Thomson (1984: 282)
  274. Nephroma resupinatum (L.) Ach. - Bird (1966: 4), Achuff & La Roi (1977: 143)

  275. Nephromopsis cucullata (Bellardi) Divakar, A. Crespo & Lumbsch - Bird (1973: 397 as Cetraria cucullata), Thomson (1984: 76 as Cetraria cucullata)

  276. Ochrolechia androgyna (Hoffm.) Arnold - Bird (1973: 396), John (1989: 108), Thomson (1997: 430)
  277. Ochrolechia arborea (Kreyer) Almb. - Douglas et al. (1981: 1458 mit den Autoren (Ljubitz.) Almb.)
  278. Ochrolechia bryophaga (Erichsen) K. Schmitz & Lumbsch - Thomson (1997: 450 as Pertusaria bryophaga)
  279. Ochrolechia inaequatula (Nyl.) Zahlbr. - Thomson (1997: 434)
  280. Ochrolechia upsaliensis (L.) A. Massal. - Thomson (1997: 436)

  281. Ophioparma lapponica (Räsänen) Hafellner & R.W. Rogers - John (1989: 108 as Haematomma lapponicum), Thomson (1997: 440)

  282. Orphniospora moriopsis (A. Massal.) D. Hawksw. - John (1989: 108)

  283. Pannaria conoplea (Ach.) Bory - Bird (1966: 4 as Pannaria pityrea), Douglas et al. (1981: 1458 as Pannaria pityrea), Thomson (1984: 292)

  284. Parmelia hygrophila Goward & Ahti - Spribille (2002: 21)
  285. Parmelia omphalodes (L.) Ach. - Thomson (1984: 308), John (1989: 108)
  286. Parmelia saxatilis (L.) Ach. - Thomson (1984: 310), John (1989: 108)
  287. Parmelia sulcata Taylor - Bird (1973: 398), Douglas et al. (1981: 1459), Addison (1984: 299), Thomson (1984: 318)

  288. Parmeliopsis ambigua (Wulfen) Nyl. - Bird (1973: 398), Douglas et al. (1981: 1459), Thomson (1984: 325)
  289. Parmeliopsis hyperopta (Ach.) Vain. - Bird (1973: 398), Douglas et al. (1981: 1459), Thomson (1984: 326)

  290. Parvoplaca tiroliensis (Zahlbr.) Arup, Søchting & Frödén - Thomson (1997: 173 as Caloplaca tiroliensis)

  291. Peltigera aphthosa (L.) Willd. - Bird (1966: 4), Bird (1973: 392), Douglas et al. (1981: 1459), Thomson (1984: 329)
  292. Peltigera canina (L.) Willd. - Bird (1966: 5), Bird (1973: 392), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1459), Thomson (1984: 332)
  293. Peltigera collina (Ach.) Schrad. - Bird (1966: 5 as Peltigera scutata), Thomson (1984: 335)
  294. Peltigera didactyla (With.) J. R. Laundon - Bird (1966: 5 as Peltigera canina var. spuria), Bird (1973: 392 as Peltigera spuria), Douglas et al. (1981: 1459 as Peltigera spuria)
  295. Peltigera horizontalis (Huds.) Baumg. - Bird (1973: 392), Thomson (1984: 337)
  296. Peltigera leucophlebia (Nyl.) Gyeln. - Bird (1966: 4 as Peltigera aphthosa var. variolosa), Bird (1973: 392), Thomson (1984: 330 as Peltigera aphthosa var. leucophlebia)
  297. Peltigera malacea (Ach.) Funck - Bird (1966: 5), Bird (1973: 392), Douglas et al. (1981: 1459), Thomson (1984: 338)
  298. Peltigera membranacea (Ach.) Nyl. - Thomson (1984: 341)
  299. Peltigera polydactylon (Neck.) Hoffm. - Bird (1966: 5), Bird (1973: 392), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1459), Thomson (1984: 343)
  300. Peltigera praetextata (Flörke ex Sommerf.) Vain. - Bird (1973: 392 First record)
  301. Peltigera rufescens (Weiss) Humb. - Bird (1966: 5 as Peltigera canina var. rufescens), Bird (1973: 392), Douglas et al. (1981: 1459), Thomson (1984: 333 as Peltigera canina var. rufescens)
  302. Peltigera scabrosa Th. Fr. - Douglas et al. (1981: 1459), Thomson (1984: 344)
  303. Peltigera venosa (L.) Hoffm. - Bird (1966: 5), Bird (1973: 392), Thomson (1984: 345)

  304. Pertusaria dactylina (Ach.) Nyl. - Thomson (1997: 453)
  305. Pertusaria geminipara (Th. Fr.) C. Knight ex Brodo - Bird (1973: 396 as Ochrolechia geminipara), Thomson (1997: 455)
  306. Pertusaria panyrga (Ach.) A. Massal. - Thomson (1997: 459)

  307. Phaeophyscia constipata (Norrl. & Nyl.) Moberg - Bird (1973: 400 as Physcia constipata), Douglas et al. (1981: 1459 as Physcia constipata), Thomson (1984: 347)
  308. Phaeophyscia endococcina (Körb.) Moberg - Thomson (1984: 348), John (1989: 108)
  309. Phaeophyscia hispidula (Ach.) Essl. - Douglas et al. (1981: 1459 as Physcia setosa),
  310. Phaeophyscia orbicularis (Neck.) Poetsch - Bird (1973: 400 as Physcia orbicularis), Douglas et al. (1981: 1459 as Physcia orbicularis)
  311. Phaeophyscia sciastra (Ach.) Moberg - Thomson (1984: 349)

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

  314. Phylliscum demangeonii (Moug. & Mont.) Nyl. - John (1989: 108)

  315. Physcia adscendens (Fr.) Oliv. - Bird (1973: 400), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1459), Thomson (1984: 352)
  316. Physcia aipolia (Ehrh. ex Humb.) Fürnr. - Bird (1973: 400), Douglas et al. (1981: 1459), Thomson (1984: 353)
  317. Physcia caesia (Hoffm.) Hampe ex Fürnr. - Thomson (1984: 354), John (1989: 108)
  318. Physcia ciliata (Hoffm.) Moberg - Bird (1973: 400), Douglas et al. (1981: 1459)
  319. Physcia dubia (Hoffm.) Lettau - Thomson (1984: 355)
  320. Physcia millegrana Degel. - Bird (1973: 400 First record), Douglas et al. (1981: 1459)
  321. Physcia phaea (Tuck.) J. W. Thomson - Thomson (1984: 356), John (1989: 108)

  322. Physcia sciastra (Ach.) Moberg - John (1989: 108)
  323. Physcia stellaris (L.) Nyl. - Bird (1973: 400)

  324. Physconia detersa (Nyl.) Poelt - Douglas et al. (1981: 1459), Thomson (1984: 359)
  325. Physconia muscigena (Ach.) Poelt - Bird (1973: 400 as Physcia muscigena), Thomson (1984: 360), John (1989: 108)

  326. Placidium squamulosum (Ach.) Breuss - Bird (1973: 401 as Dermatocarpon hepaticum)

  327. Placynthium asperellum (Ach.) Trevis. - Thomson (1984: 365 as Placynthium aspratile)
  328. Placynthium nigrum (Huds.) Gray - Thomson (1984: 366)

  329. Platismatia glauca (L.) C. F. Culb. & W. L. Culb. - Bird (1973: 398), Thomson (1984: 368)

  330. Pleopsidium chlorophanum (Wahlenb.) Zopf - Thomson (1997: 22 as Acarospora chlorophana)

  331. Polyblastia cupularis A. Massal. - Thomson (1997: 478)

  332. Polycauliona candelaria (L.) Frödén, Arup, & Søchting - Thomson (1984: 483 as Xanthoria candelaria), John (1989: 109 as Xanthoria candelaria)
  333. Polycauliona polycarpa (Hoffm.) Frödén, Arup, & Søchting - Bird (1973: 400 as Xanthoria polycarpa), Douglas et al. (1981: 1459 as Xanthoria polycarpa), Thomson (1984: 487 as Xanthoria polycarpa)

  334. Polychidium muscicola (Sw.) Gray - Thomson (1984: 370), John (1989: 108)

  335. Porpidia crustulata (Ach.) Hertel & Knoph - John (1989: 108)
  336. Porpidia flavocaerulescens (Hornem.) Hertel & A. J. Schwab - John (1989: 108), Thomson (1997: 491 as Porpidia flavicunda)
  337. Porpidia macrocarpa (DC.) Hertel & A. J. Schwab - Bird (1973: 394 as Lecidea macrocarpa)
  338. Porpidia thomsonii Gowan - John (1989: 108), Thomson (1997: 498)

  339. Protoblastenia rupestris (Scop.) Steiner - Bird (1973: 400 First record), Thomson (1997: 503)

  340. Protopannaria pezizoides (Web.) Trev. - Bird (1966: 4 as Pannaria pezizoides), Bird (1973: 392 as Pannaria pezizoides), Thomson (1984: 294 as Pannaria pezizoides)

  341. Protoparmelia badia (Hoffm.) Hafellner - Bird (1973: 396 as Lecanora badia First record), John (1989: 108), Thomson (1997: 269 as Lecanora badia)

  342. Protoparmeliopsis muralis (Schreb.) M. Choisy - Thomson (1997: 295 as Lecanora muralis)

  343. Pseudephebe minuscula (Nyl. ex Arnold) Brodo & D. Hawksw. - Bird (1973: 398 as Alectoria minuscula), Thomson (1984: 373), John (1989: 108)
  344. Pseudephebe pubescens (L.) M. Choisy - Bird (1973: 398 as Alectoria pubescens), Thomson (1984: 374), John (1989: 108)

  345. Psora decipiens (Hedwig) Hoffm. - Bird (1973: 393 as Lecidea decipiens), Thomson (1997: 507)
  346. Psora globifera (Ach.) A. Massal. - Thomson (1997: 508)
  347. Psora himalayana (Bab.) Timdal - Thomson (1997: 507)
  348. Psora nipponica (Zahlbr.) Gotth. Schneider - Douglas et al. (1981: 1458 as Lecidea rubiformis), Thomson (1997: 510)
  349. Psora rubiformis (Wahlenb. ex Ach.) Hook. - Bird (1973: 394 as Lecidea rubiformis)

  350. Psoroma hypnorum (Vahl) Gray - Bird (1966: 4), Bird (1973: 392), Thomson (1984: 376)

  351. Psorula rufonigra (Tuck.) Gotth. Schneider - Thomson (1997: 515)

  352. Ramboldia cinnabarina (Sommerf.) Kalb, Lumbsch & Elix - Thomson (1997: 336 as Lecidea cinnabarina)

  353. Ramalina dilacerata (Hoffm.) Hoffm. - Bird (1973: 399 as Ramalina minuscula), Achuff & La Roi (1977: 143 as Ramalina minuscula), Douglas et al. (1981: 1459)
  354. Ramalina farinacea (L.) Ach. - Douglas et al. (1981: 1459)
  355. Ramalina fastigiata (Pers.) Ach. - Bird (1973: 399), Douglas et al. (1981: 1459), Addison (1984: 299),
  356. Ramalina intermedia (Del. ex Nyl.) Nyl. - Thomson (1984: 379)
  357. Ramalina obtusata (Arnold) Bitt. - Thomson (1984: 380)
  358. Ramalina pollinaria (Westr.) Ach. - Douglas et al. (1981: 1459), Addison (1984: 299), Thomson (1984: 381)
  359. Ramalina roesleri (Hochst. ex Schaer.) Hue - Bird (1973: 399 First record), Thomson (1984: 233 as Fistulariella roesleri)
  360. Ramalina thrausta (Ach.) Nyl. - Bird (1973: 399 First record), Douglas et al. (1981: 1459), Thomson (1984: 382)

  361. Rhizocarpon alpicola (Anzi) Rabenh. - John (1989: 108)
  362. Rhizocarpon badioatrum (Flörke ex Spreng.) Th. Fr. - John (1989: 108), Thomson (1997: 524)
  363. Rhizocarpon bolanderi (Tuck.) Herre - John (1989: 108), Thomson (1997: 526)
  364. Rhizocarpon chioneum (Norman) - Thomson (1997: 527)
  365. Rhizocarpon disporum (Nägeli ex Hepp) Müll. Arg. - Douglas et al. (1981: 1459), John (1989: 108)
  366. Rhizocarpon eupetraeoides (Nyl.) Blomb. & Forss. - John (1989: 108)
  367. Rhizocarpon eupetraeum (Nyl.) Arnold - John (1989: 108)
  368. Rhizocarpon geminatum Körb. - John (1989: 108), Thomson (1997: 537)
  369. Rhizocarpon geographicum (L.) DC. - Bird (1973: 394), John (1989: 108), Thomson (1997: 538)
  370. Rhizocarpon grande (Flörke ex Flot.) Arnold - Bird (1973: 394 First record), John (1989: 108), Thomson (1997: 539)
  371. Rhizocarpon intermediellum Räsänen - Thomson (1997: 542)
  372. Rhizocarpon macrosporum Räsänen - John (1989: 108), Thomson (1997: 543)
  373. Rhizocarpon polycarpum (Hepp) Th. Fr. - John (1989: 108), Thomson (1997: 546)
  374. Rhizocarpon pusillum Runem. - Thomson (1997: 547)
  375. Rhizocarpon riparium Räsänen - John (1989: 108), Thomson (1997: 548)
  376. Rhizocarpon superficiale (Schaer.) Vain. - John (1989: 108), Thomson (1997: 551)

  377. Rhizoplaca chrysoleuca (Sm.) Zopf - Thomson (1997: 554), Douglas et al. (1981: 1458), John (1989: 108)
  378. Rhizoplaca melanophthalma (Ram.) Leuckert & Poelt - John (1989: 108), Thomson (1997: 555)

  379. Rinodina albertana Sheard - Sheard (2010: 36 Protologue) Type in Edmonton, Alberta, Canada PMAE
  380. Rinodina archaea (Ach.) Vain. - Bird (1973: 399), Thomson (1997: 560), Douglas et al. (1981: 1459)
  381. Rinodina aurantiaca Sheard - Sheard & Mayrhofer (2002: 653)
  382. Rinodina bischoffii (Hepp) A. Massal. - Bird (1973: 399)
  383. Rinodina boulderensis Sheard - Sheard & Mayrhofer (2002: 656)
  384. Rinodina calcigena (Th. Fr.) Lynge - Thomson (1997: 562)
  385. Rinodina exigua (Ach.) Gray - Douglas et al. (1981: 1459)
  386. Rinodina mniaraea (Ach.) Körb. - Bird (1973: 399), Thomson (1997: 567)
  387. Rinodina pyrina (Ach.) Ach. - Bird (1973: 399)
  388. Rinodina terrestris Tomin - Thomson (1997: 568 as Rinodina mucronatula)
  389. Rinodina turfacea (Wahlenb.) Körb. - Bird (1973: 399), John (1989: 108), Thomson (1997: 571)

  390. Romjularia lurida (Ach.) Timdal - Thomson (1997: 509 as Psora lurida)

  391. Rostania ceranisca (Nyl.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 182 as Collema ceraniscum)

  392. Rusavskia elegans (Link) S. Y. Kondr. & Kärnefelt - Bird (1973: 400 as Xanthoria elegans), Douglas et al. (1981: 1459 as Xanthoria elegans), Thomson (1984: 484 as Xanthoria elegans), John (1989: 109 as Xanthoria elegans)
  393. Rusavskia sorediata (Vain.) S. Y. Kondr. & Kärnefelt - Thomson (1984: 487 as Xanthoria sorediata)

  394. Sarcogyne regularis Körb. - Bird (1973: 396 First record), Thomson (1997: 579)

  395. Schaereria cinereorufa (Schaer.) Th. Fr. - John (1989: 109)
  396. Schaereria fuscocinerea (Nyl.) Clauzade & Cl. Roux - John (1989: 109 as Schaereria tenebrosa)

  397. Scytinium callopismum (A. Massal.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 180 as Collema callopismum)
  398. Scytinium lichenoides (L.) Otálora, P. M. Jørg. & Wedin - Bird (1966: 3 as Leptogium lichenoides), Bird (1973: 392 as Leptogium lichenoides), Thomson (1984: 257 as Leptogium lichenoides)
  399. Scytinium gelatinosum (With.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 263 as Leptogium sinuatum)
  400. Scytinium tenuissimum (Dicks.) Otálora, P. M. Jørg. & Wedin - Bird (1966: 3 as Leptogium tenuissimum), Thomson (1984: 264 as Leptogium tenuissimum)
  401. Scytinium teretiusculum (Wallr.) Otálora, P. M. Jørg. & Wedin - Bird (1966: 3 as Leptogium teretiusculum)

  402. Solorina bispora Nyl. - Thomson (1984: 386)
  403. Solorina crocea (L.) Ach. - Bird (1973: 393), Thomson (1984: 387)
  404. Solorina octospora (Arnold) Arnold - Thomson (1984: 389)
  405. Solorina saccata (L.) Ach. - Bird (1973: 393), Douglas et al. (1981: 1459), Thomson (1984: 390)
  406. Solorina spongiosa (Ach.) Anzi - Thomson (1984: 391)

  407. Spilonema revertens Nyl. - John (1989: 109)

  408. Sporastatia polyspora (Nyl.) Grummann - John (1989: 109)
  409. Sporastatia testudinea (Ach.) A. Massal. - John (1989: 109), Thomson (1997: 589)

  410. Staurothele areolata (Ach.) Lettau - Thomson (1997: 592)
  411. Staurothele drummondii (Tuck.) Tuck. - John (1989: 109 as Staurothele clopima), Thomson (1997: 595)
  412. Staurothele fissa (Tayler) Zwackh - Thomson (1997: 596)

  413. Stereocaulon alpinum Laurer - Bird (1973: 394), Douglas et al. (1981: 1459), Thomson (1984: 400)
  414. Stereocaulon botryosum Ach. em. Frey - Thomson (1984: 405)
  415. Stereocaulon paschale (L.) Hoffm. - Douglas et al. (1981: 1459), Thomson (1984: 418)
  416. Stereocaulon rivulorum H. Magn. - Thomson (1984: 421)
  417. Stereocaulon saxatile H. Magn. - Thomson (1984: 423)
  418. Stereocaulon tomentosum Fr. - Bird (1973: 394), Achuff & La Roi (1977: 143), Thomson (1984: 428)

  419. Tephromela atra (Huds.) Hafellner - Thomson (1997: 633)

  420. Tetramelas geophilus (Flörke ex Sommerf.) Norman - Thomson (1997: 133 as Buellia geophila)
  421. Tetramelas papillatus (Sommerf.) Kalb - John (1989: 108 as Buellia papillata), Thomson (1997: 136 as Buellia papillata)
  422. Tetramelas triphragmioides (Anzi) A. Nordin & Tibell - Bird (1973: 399 as Buellia triphragmioides), Douglas et al. (1981: 1457 as Buellia triphragmioides)

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

  424. Thrombium epigaeum (Pers.) Wallr. - Bird (1973: 401 First record), Thomson (1997: 610)

  425. Toninia candida (Weber) Th. Fr. - Bird (1973: 394 First record), Thomson (1997: 614)
  426. Toninia populorum (A. Massal.) Kistenich, Timdal, Bendiksby & S. Ekman - Bird (1973: 393 as Bacidia populorum First record)
  427. Toninia ruginosa (Tuck.) Herre subsp. ruginosa - Bird (1973: 394)
  428. Toninia sedifolia (Scop.) Timdal - Bird (1973: 394 as Toninia caeruleonigricans), Thomson (1997: 614 as Toninia coeruleonigricans auct.)
  429. Toninia tristis (Th. Fr.) Th. Fr. subsp. tristis - Thomson (1997: 620)

  430. Trapeliopsis granulosa (Hoffm.) Lumbsch - Bird (1973: 393 as Lecidea granulosa), Douglas et al. (1981: 1458 as Lecidea granulosa), Thomson (1997: 624)

  431. Tremolecia atrata (Ach.) Hertel - Bird (1973: 393 as Lecidea dicksonii First record), Thomson (1997: 627)

  432. Tuckermannopsis americana (Spreng.) Hale - Bird (1973: 397 as Cetraria halei), Douglas et al. (1981: 1457 as Cetraria halei), Addison (1984: 299 as Cetraria halei), Thomson (1984: 81 as Cetraria halei)
  433. Tuckermannopsis chlorophylla (Willd.) Hale - Bird (1973: 397 as Cetraria chlorophylla), Douglas et al. (1981: 1457 as Cetraria chlorophylla), Thomson (1984: 73 as Cetraria chlorophylla)
  434. Tuckermannopsis orbata (Nyl.) M. J. Lai - Spribille (2002: 21)
  435. Tuckermannopsis platyphylla (Tuck.) Gyeln. - Bird (1973: 397 as Cetraria platyphylla)
  436. Tuckermannopsis sepincola (Ehrh.) Hale - Thomson (1984: 94 as Cetraria sepincola)

  437. Umbilicaria americana Poelt & T. H. Nash - Poelt & Nash (1993: 425)
  438. Umbilicaria angulata Tuck. - Thomson (1984: 442)
  439. Umbilicaria cylindrica (L.) Delise ex Duby - Bird (1973: 395), John (1989: 109)
  440. Umbilicaria decussata (Vill.) Zahlbr. - Thomson (1984: 288 as Omphalodiscus decussatus)
  441. Umbilicaria deusta (L.) Baumg. - Thomson (1984: 449), John (1989: 109)
  442. Umbilicaria hirsuta (Sw. ex Westr.) Ach. - Thomson (1984: 452)
  443. Umbilicaria hyperborea (Ach.) Hoffm. - Bird (1973: 395), Thomson (1984: 452), John (1989: 109)
  444. Umbilicaria lambii Imshaug - John (1989: 109)
  445. Umbilicaria polaris (Schol.) Zahlbr. - Thomson (1984: 289 erroneously as Omphalodiscus krascheninnikovii)
  446. Umbilicaria mammulata (Ach.) Tuck. - Thomson (1984: 454)
  447. Umbilicaria muehlenbergii (Ach.) Tuck. - Douglas et al. (1981: 1457 as Actinogyra muehlenbergii), Thomson (1984: 26 as Actinogyra muehlenbergii), Thomson & Ahti (1994: 142 as Actinogyra muehlenbergii)
  448. Umbilicaria phaea Tuck. - Thomson (1984: 455), John (1989: 109)
  449. Umbilicaria polyphylla (L.) Baumg. - Thomson (1984: 457), John (1989: 109)
  450. Umbilicaria proboscidea (L.) Schrad. - Thomson (1984: 458), John (1989: 109)
  451. Umbilicaria rigida (Du Rietz) Frey - Thomson (1984: 31 as Agyrophora rigida), John (1989: 109)
  452. Umbilicaria torrefacta (Lightf.) Schrad. - Thomson (1984: 459), John (1989: 109)
  453. Umbilicaria vellea (L.) Ach. - Thomson (1984: 460), John (1989: 109), Poelt & Nash (1993: 425)
  454. Umbilicaria virginis Schaer. - Thomson (1984: 290 as Omphalodiscus virginis)

  455. Usnea alpina Motyka - Douglas et al. (1981: 1459)
  456. Usnea cavernosa Tuck. - Bird (1973: 398), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1459), Thomson (1984: 462)
  457. Usnea ceratina Ach. - Bird (1973: 398)
  458. Usnea dasopoga (Ach.) Nyl. - Bird (1973: 398), Achuff & La Roi (1977: 143), Thomson (1984: 465)
  459. Usnea glabrata (Ach.) Vain. - Bird (1973: 398 First record), Douglas et al. (1981: 1459), Addison (1984: 299 as Usnea sorediifera)
  460. Usnea glabrescens (Nyl. ex Vain.) Vain. - Bird (1973: 398 as Usnea compacta), Achuff & La Roi (1977: 143)
  461. Usnea hirta (L.) Weber ex F. H. Wigg. - Bird (1973: 398), Thomson (1984: 467)
  462. Usnea scabrata Nyl. - Bird (1973: 399 as Usnea scabrata subsp. nylanderiana), Achuff & La Roi (1977: 143 as Usnea scabiosa), Thomson (1984: 468 as Usnea scabrata subsp. nylanderiana)
  463. Usnea subfloridana Stirt. - Bird (1973: 399), Douglas et al. (1981: 1459), Addison (1984: 299), Thomson (1984: 469)
  464. Usnea substerilis Motyka - Bird (1973: 399), Douglas et al. (1981: 1459 erroneously as Usnea sorediifera), Thomson (1984: 470)

  465. Varicellaria rhodocarpa (Körb.) Th. Fr. - Bird (1973: 395 as Varicellaria kemensis First record), Thomson (1997: 629)

  466. Verrucaria muralis Ach. - John (1989: 109), Thomson (1997: 641)
  467. Verrucaria nigrescens Pers. - Thomson (1997: 642)

  468. Vulpicida pinastri (Scop.) J.-E. Mattsson & M. J. Lai - Bird (1973: 397 as Cetraria pinastri), Douglas et al. (1981: 1457 as Cetraria pinastri), Addison (1984: 299 as Cetraria pinastri), Thomson (1984: 93 as Cetraria pinastri), John (1989: 109 as Tuckermannopsis pinastri)
  469. Vulpicida tilesii (Ach.) J.-E. Mattsson & M. J. Lai - Thomson (1984: 95 as Cetraria tilesii), Glew (1994: 83)

  470. Xanthomendoza fallax (Hepp) Søchting, Kärnefelt & S. Kondr. - Bird (1973: 400 as Xanthoria fallax), Thomson (1984: 486 as Xanthoria fallax)
  471. Xanthomendoza trachyphylla (Tuck.) Frödén, Arup & Søchting - Thomson (1997: 177 as Caloplaca trachyphylla)

  472. Xanthoparmelia chlorochroa (Tuck.) Hale - Thomson (1984: 477)
  473. Xanthoparmelia coloradoensis (Gyeln.) Hale - Douglas et al. (1981: 1458 erroneously as Parmelia taractica), Thomson (1984: 480 erroneously as Xanthoparmelia taractica)
  474. Xanthoparmelia stenophylla (Ach.) Ahti & D. Hawksw. - John (1989: 109 as Xanthoparmelia somloensis)

  475. Xylographa parallela (Ach.: Fr.) Behlen & Desberger - Bird (1973: 400 as Xylographa abietina First record), Thomson (1997: 646 as Xylographa abietina)
  476. Xylographa vitiligo (Ach.) J. R. Laundon - Thomson (1997: 647)

  477. Xylopsora friesii (Ach. ex Lilj.) Bendiksby & Timdal - Bird (1973: 393 as Lecidea friesii First record), Thomson (1997: 247 as Hypocenomyce friesii)

  478. Zahlbrucknerella calcarea (Herre) Herre - Thomson (1984: 489)