Checklist of lichens of Saskatchewan (Canada)
Version 31 December 2018

 

  1. Acarospora americana H. Magn. - Freebury (2014: 106)
  2. Acarospora badiofusca (Nyl.) Th. Fr. - Thomson (1997: 21), Freebury (2014: 106)
  3. Acarospora chrysops (Tuck.) H. Magn. - Looman (1962: 299)
  4. Acarospora fuscata (Nyl.) Arnold - Thomson (1997: 24)
  5. Acarospora glaucocarpa (Wahlenb.) Körb. - Thomson (1997: 25), Freebury (2014: 106)
  6. Acarospora molybdina (Wahlenb. in Ach.) A. Massal. - Thomson (1997: 28)
  7. Acarospora rosulata (Th. Fr.) H. Magn. - Freebury (2014: 106 First record for Canada)
  8. Acarospora schleicheri (Ach.) A. Massal. - Looman (1962: 299), Thomson (1997: 33), Freebury (2014: 106)
  9. Acarospora stapfiana (Müll. Arg.) Hue - Freebury (2014: 106 on Caloplaca trachyphylla First record)
  10. Acarospora strigata (Nyl.) Jatta - Looman (1962: 299), Freebury (2014: 106)
  11. Acarospora veronensis A. Massal. - Looman (1962: 299), Freebury (2014: 107)

  12. Agonimia vouauxii (B. de Lesd.) M. Brand & Diederich - Freebury (2014: 107 First record for North America)

  13. Amandinea punctata (Hoffm.) Coppins & Scheid. - Looman (1962: 303), Thomson (1997: 138 as Buellia punctata), Freebury (2014: 107)

  14. Arctoparmelia centrifuga (L.) Hale - Argus (1964: 149 as Parmelia centrifuga), Thomson (1984: 476 as Xanthoparmelia centrifuga)
  15. Arctoparmelia separata (Th. Fr.) Hale - Thomson (1984: 479 as Xanthoparmelia separata)

  16. Arthonia glebosa Tuck. - Freebury (2014: 107 First record)
  17. Arthonia patellulata Nyl. - Thomson (1997: 47), Freebury (2014: 107)

  18. Aspicilia aliena (Zahlbr.) Oxner - Thomson (1997: 58), Freebury (2014: 107)
  19. Aspicilia cinerea (L.) Körb. - Thomson (1997: 68) - Freebury (2014: 107)
  20. Aspicilia determinata (H. Magn.) N. S. Golubk. - Freebury (2014: 107)
  21. Aspicilia reptans (Looman) Wetmore - Looman (1962: 301 as Lecanora reptans Type in Experimental Farm)
  22. Aspicilia subradians (Nyl.) Hue - Thomson (1997: 94)
  23. Aspicilia supertegens Arnold - Thomson (1997: 95)

  24. Athallia holocarpa (Hoffm.) Arup, Frödén & Søchting - Thomson (1997: 164 as Caloplaca holocarpa), Freebury (2014: 108 as Caloplaca holocarpa)
  25. Athallia pyracea (Ach.) Arup, Frödén & Søchting - Freebury (2014: 108 as Caloplaca pyracea)

  26. Bacidia bagliettoana (A. Massal. & de Not. in A. Massal.) Jatta - Looman (1962: 297 as Bacidia muscorum), Thomson (1997: 99), Freebury (2014: 107)
  27. Bacidia circumspecta (Nyl. ex Vain.) Malme - Freebury (2014: 107)
  28. Bacidia igniarii (Nyl.) Oxner - Thomson (1997: 103)

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

  30. Biatora vernalis (L.) Ach. - Looman (1962: 298 as Lecidea vernalis)

  31. Bilimbia sabuletorum (Schreb.) Arnold - Looman (1962: 297 as Bacidia sabuletorum), Thomson (1997: 422 as Mycobilimbia sabuletorum), Freebury (2014: 107)

  32. Blennothallia crispa (Huds.) Otálora, P. M. Jørg. & Wedin - Freebury (2014: 107 First record)

  33. Bryoplaca jungermanniae (Vahl) Søchting, Frödén & Arup - Looman (1962: 303 as Caloplaca jungermanniae)
  34. Bryoplaca sinapisperma (Lam. & DC.) Søchting, Frödén & Arup - Looman (1962: 303 as Blastenia sinapisperma)

  35. Bryoria capillaris (Ach.) Brodo & D. Hawksw. - Thomson (1984: 54)
  36. Bryoria chalybeiformis (L.) Brodo & D. Hawksw. - Thomson (1984: 56)
  37. Bryoria fuscescens (Gyeln.) Brodo & D. Hawksw. - Looman (1962: 302 as Alectoria jubata), Thomson (1984: 57), Freebury (2014: 107)
  38. Bryoria lanestris (Ach.) Brodo & D. Hawksw. - Thomson (1984: 59)
  39. Bryoria nadvornikiana (Gyel.) Brodo & D. Hawksw. - Thomson (1984: 61)
  40. Bryoria simplicior (Vain.) Brodo & D. Hawksw. - Thomson (1984: 65)
  41. Bryoria trichodes (Michx.) Brodo & D. Hawksw. subsp. trichodes - Thomson (1984: 68)

  42. Buellia badia (Fr.) A. Massal. - Looman (1962: 303 as Buellia turgescens)
  43. Buellia disciformis (Fr.) Mudd - Looman (1962: 303 as Buellia parasema), Thomson (1997: 129)
  44. Buellia elegans Poelt - Thomson (1997: 130), Freebury (2014: 107)
  45. Buellia epigaea (Hoffm.) Tuck. - Looman (1962: 303)
  46. Buellia retrovertens Tuck. - Looman (1962: 303)
  47. Buellia spuria (Schaer.) Anzi - Thomson (1997: 139)
  48. Buellia zoharyi Galun - Follmann & Huneck (1977: 177)

  49. Caeruleum heppii (Nägeli ex Körb.) K. Knudsen & B. Abbott - Freebury (2014: 107)

  50. Calicium trabinellum (Ach.) Ach. - Thomson (1997: 145)

  51. Calogaya decipiens (Arnold) Arup, Frödén & Søchting - Freebury (2014: 108 as Caloplaca decipiens First record for Canada)

  52. Caloplaca atroalba (Tuck.) Zahlbr. - Looman (1962: 303), Freebury (2014: 107)
  53. Caloplaca cerina (Hedw.) Th. Fr. - Looman (1962: 303), Thomson (1997: 154), Freebury (2014: 107)
  54. Caloplaca fraudans (Th. Fr.) H. Olivier - Looman (1962: 303), Thomson (1997: 162)
  55. Caloplaca grimmiae (Nyl.) H. Olivier - Freebury (2014: 108 First record)
  56. Caloplaca lignicola Wetmore - Freebury (2014: 108 First record for Canada)
  57. Caloplaca microphyllina (Tuck.) Hasse - Freebury (2014: 108 First record)
  58. Caloplaca pratensis Wetmore - Freebury (2014: 108 First record for Canada)
  59. Caloplaca saxicola (Hoffm.) Nordin - Looman (1962: 303 as Caloplaca murorum), Thomson (1997: 169)
  60. Caloplaca sideritis (Tuck.) Zahlbr. - Looman (1962: 303)
  61. Caloplaca stillicidiorum (Vahl) Lynge - Looman (1962: 303), Thomson (1997: 172), Freebury (2014: 108)
  62. Caloplaca ulmorum (Fink) Fink - Looman (1962: 303)

  63. Candelaria concolor (Dicks.) Arnold - Looman (1962: 301), Freebury (2014: 108)

  64. Candelariella aggregata M. Westb. - Freebury (2014: 108 First record for Canada)
  65. Candelariella antennaria Räsänen - Freebury (2014: 108 First record for Canada)
  66. Candelariella aurella (Hoffm.) Zahlbr. - Looman (1962: 301), Thomson (1997: 182), Freebury (2014: 108)
  67. Candelariella citrina B. de Lesd. - Thomson (1997: 187 as Candelariella terrigena)
  68. Candelariella efflorescens R. C. Harris & W. R. Buck - Freebury (2014: 108 First record)
  69. Candelariella rosulans (Müll. Arg.) Zahlbr. - Freebury (2014: 108 First record)
  70. Candelariella vitellina (Hoffm.) Müll. Arg. - Looman (1962: 301), Argus (1964: 148), Thomson (1997: 189), Freebury (2014: 108)

  71. Catillaria chalybeia (Borrer) A. Massal. - Looman (1962: 298), Thomson (1997: 196)
  72. Catillaria glauconigrans (Tuck.) Hasse - Thomson (1997: 197)

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

  74. Cetraria aculeata (Schreb.) Fr. - Looman (1962: 302 as Cornicularia aculeata), Thomson (1984: 198 as Cornicularia aculeata), Freebury (2014: 108)
  75. Cetraria arenaria Kärnefelt - Freebury (2014: 108)
  76. Cetraria ericetorum Opiz - Looman (1962: 302 as Cetraria crispa), Thomson (1984: 79)
  77. Cetraria islandica (L.) Ach. - Looman (1962: 302), Thomson (1984: 84)

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

  79. Chaenotheca chrysocephala (Turner ex Ach.) Th. Fr. - Thomson (1997: 205)

  80. Circinaria arida Owe-Larss., A. Nordin & Tibell - Freebury (2014: 108)
  81. Circinaria caesiocinerea (Nyl. ex Malbr.) A. Nordin, S. Savić & Tibell - Looman (1962: 300 as Lecanora caesiocinerea), Looman (1962: 300 as Lecanora cinerea), Thomson (1997: 65 as Aspicilia caesiocinerea)
  82. Circinaria contorta (Hoffm.) A. Nordin, S. Savić & Tibell - Freebury (2014: 109)
  83. Circinaria hispida (Mereschk.) A. Nordin, S. Savić & Tibell - Thomson (1960: 249 as Agrestia cyphellata Type), Looman (1962: 302 as Agrestia cyphellata), Freebury (2014: 109)

  84. Cladonia amaurocraea (Flörke) Schaer. - Looman (1962: 298), Argus (1964: 148), Thomson (1984: 107)
  85. Cladonia arbuscula (Wallr.) Rabenh. - Thomson (1984: 110)
  86. Cladonia bellidiflora (Ach.) Schaer. - Looman (1962: 298)
  87. Cladonia botrytes (K. G. Hagen) Willd. - Looman (1962: 298), Thomson (1984: 114), Freebury (2014: 109)
  88. Cladonia cariosa (Ach.) Spreng. - Looman (1962: 298), Thomson (1984: 116), Freebury (2014: 109)
  89. Cladonia carneola (Fr.) Fr. - Looman (1962: 298), Thomson (1984: 117)
  90. Cladonia cenotea (Ach.) Schaer. - Looman (1962: 298), Thomson (1984: 118)
  91. Cladonia chlorophaea (Flörke ex Sommerf.) Spreng. - Looman (1962: 298), Thomson (1984: 119), Freebury (2014: 109)
  92. Cladonia coccifera (L.) Willd. - Looman (1962: 298), Argus (1964: 148), Thomson (1984: 121)
  93. Cladonia coniocraea (Flörke) Spreng. - Looman (1962: 298), Thomson (1984: 122), Freebury (2014: 109)
  94. Cladonia cornuta (L.) Hoffm. subsp. cornuta - Looman (1962: 298), Thomson (1984: 124)
  95. Cladonia crispata (Ach.) Flot. var. crispata - Looman (1962: 299), Thomson (1984: 125)
  96. Cladonia cristatella Tuck. - Looman (1962: 299), Freebury (2014: 109)
  97. Cladonia decorticata (Flörke) Spreng. - Looman (1962: 299), Thomson (1984: 128)
  98. Cladonia deformis (L.) Hoffm. - Looman (1962: 299), Thomson (1984: 129)
  99. Cladonia fimbriata (L.) Fr. - Looman (1962: 299), Thomson (1984: 133), Freebury (2014: 109)
  100. Cladonia furcata (Huds.) Schrad. - Looman (1962: 299)
  101. Cladonia glauca Flörke - Looman (1962: 299), Thomson (1984: 135)
  102. Cladonia gracilis (L.) Willd. subsp. turbinata (Ach.) Ahti - Thomson (1984: 136), Freebury (2014: 109)
  103. Cladonia gracilis (L.) Willd. subsp. gracilis - Thomson (1984: 137)
  104. Cladonia grayi G. Merr. ex Sandst. - Looman (1962: 299)
  105. Cladonia macilenta Hoffm. - Looman (1962: 298 as Cladonia bacillaris), Thomson (1984: 111 as Cladonia bacillaris)
  106. Cladonia macrophylla (Schaer.) Stenham. - Thomson (1984: 141)
  107. Cladonia macrophyllodes Nyl. - Looman (1962: 299), Thomson (1984: 143)
  108. Cladonia maxima (Asah.) Ahti - Thomson (1984: 145)
  109. Cladonia mitis Sandst. - Looman (1962: 299), Thomson (1984: 148), Rettie et al. (1997: 251), Thomas & Gates (1999: 535), Freebury (2014: 109 as Cladonia arbuscula subsp. mitis)
  110. Cladonia multiformis Merr. - Looman (1962: 299), Thomson (1984: 149)
  111. Cladonia phyllophora Ehrh. ex Hoffm. - Looman (1962: 299 as Cladonia degenerans), Thomson (1984: 153)
  112. Cladonia pleurota (Flörke) Schaer. - Thomson (1984: 154)
  113. Cladonia pocillum (Ach.) Rich. - Thomson (1984: 156), Freebury (2014: 109)
  114. Cladonia pyxidata (L.) Hoffm. - Looman (1962: 299), Thomson (1984: 158), Freebury (2014: 109)
  115. Cladonia ramulosa (Ach.) Ahti & James - Looman (1962: 299 as Cladonia pityrea), Thomson (1984: 108 as Cladonia anomaea)
  116. Cladonia rangiferina (L.) F. H. Wigg. - Thomson (1984: 159), Rettie et al. (1997: 251)
  117. Cladonia rei Schaer. - Looman (1962: 299 as Cladonia nemoxyna), Freebury (2014: 109)
  118. Cladonia robbinsii Evans - Looman (1962: 299), Freebury (2014: 109)
  119. Cladonia scabriuscula (Del. in Duby) Nyl. - Thomson (1984: 160)
  120. Cladonia squamosa (Scop.) Hoffm. var. squamosa - Looman (1962: 299), Thomson (1984: 161)
  121. Cladonia squamosa (Scop.) Hoffm. var. subsquamosa (Nyl.) Vain. - Looman (1962: 299 as Cladonia subsquamosa)
  122. Cladonia stellaris (Opiz) Pouzar & Vezda - Looman (1962: 298 as Cladonia alpestris), Thomson (1984: 163), Thomas & Gates (1999: 535)
  123. Cladonia subcariosa Nyl. - Looman (1962: 299 as Cladonia polycarpia)
  124. Cladonia subulata (L.) F. H. Wigg. - Looman (1962: 299 as Cladonia cornutoradiata), Thomson (1984: 168)
  125. Cladonia symphycarpa (Flörke) Fr. - Freebury (2014: 109)
  126. Cladonia turgida Ehrh. ex Hoffm. - Looman (1962: 299), Thomson (1984: 172)
  127. Cladonia unicalis (L.) F. H. Wigg. - Looman (1962: 299), Thomson (1984: 173)
  128. Cladonia verticillata (Hoffm.) Schaer. - Looman (1962: 299), Thomson (1984: 174)

  129. Cliostomum griffithii (Sm.) Malme - Looman (1962: 298 as Catillaria griffithii)

  130. Cyphelium notarisii (Tul.) Blomb. & Forssell - Freebury (2014: 109)
  131. Cyphelium tigillare (Ach.) Ach. - Looman (1962: 296), Thomson (1997: 214)

  132. Dermatocarpon miniatum (L.) Mann. - Looman (1962: 296), Argus (1964: 148), Thomson (1984: 219)

  133. Dimelaena oreina (Ach.) Norman - Looman (1962: 303 as Rinodina oreina), Thomson (1997: 216), Freebury (2014: 109)

  134. Diploschistes actinostomus (Pers.) Zahlbr. - Looman (1962: 296)
  135. Diploschistes muscorum (Scop.) R. Sant. - Thomson (1997: 218), Freebury (2014: 109)
  136. Diploschistes scruposus (Schreber) Norman - Looman (1962: 296), Thomson (1997: 218)

  137. Diplotomma venustum (Körb.) Körb. - Freebury (2014: 109 First record)

  138. Enchylium bachmanianum (Fink) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 179 as Collema bachmanianum)
  139. Enchylium coccophorum (Tuck.) Otálora, P. M. Jørg. & Wedin - Freebury (2014: 109)
  140. Enchylium tenax (Sw.) Gray - Looman (1962: 296 as Collema tenax), Thomson (1984: 191 as Collema tenax), Freebury (2014: 109 as Collema tenax)

  141. Endocarpon loscosii Müll. Arg. - Freebury (2014: 109 First record for Canada)
  142. Endocarpon pusillum Hedw. - Looman (1962: 296), Freebury (2014: 110)

  143. Evernia mesomorpha Nyl. - Looman (1962: 302), Thomson (1984: 229), Freebury (2014: 110)

  144. Flavocetraria cucullata (Bellardi) Kärnefelt & A. Thell - Thomson (1984: 76 as Cetraria cucullata)
  145. Flavocetraria nivalis (L.) Kärnefelt & A. Thell - Looman (1962: 302 as Cetraria nivalis), Thomson (1984: 92 as Cetraria nivalis)

  146. Flavoparmelia flaventior (Stirt.) Hale - Looman (1962: 302 as Parmelia flaventior)

  147. Flavoplaca citrina (Hoffm.) Arup, Frödén & Søchting - Freebury (2014: 107 as Caloplaca citrina First record)

  148. Gallowayella tibellii (S. Y. Kondr. & Kärnefelt) S. Y. Kondr., Fedorenko, S. Stenroos, Kärnefelt, Elix, Hur & A. Thell - Kondratyuk & Kärnefelt (2003: 126 as Xanthoria tibellii)

  149. Glypholecia scabra (Pers.) Müll. Arg. - Looman (1962: 299), Thomson (1997: 236)

  150. Gyalolechia bracteata (Hoffm.) Räsänen subsp. bracteata - Freebury (2014: 110 as Fulgensia bracteata)
  151. Gyalolechia flavovirescens (Wulf.) Søchting, Frödén & Arup - Looman (1962: 303 as Caloplaca flavovirescens), Thomson (1997: 161 as Caloplaca flavovirescens)
  152. Gyalolechia fulgens (Sw.) Søchting, Frödén & Arup - Looman (1962: 303 as Fulgensia fulgens), Thomson (1997: 229 as Fulgensia fulgens)
  153. Gyalolechia subbracteata (Nyl.) Søchting, Frödén & Arup - Freebury (2014: 110 as Fulgensia subbracteata First record for Canada)

  154. Heppia lutosa (Ach.) Nyl. - Looman (1962: 297), Thomson (1997: 244), Freebury (2014: 110)

  155. Hertelidea botryosa (Fr.) Th. Fr. - Looman (1962: 298 as Lecidea botryosa)

  156. Heteroplacidium compactum (A. Massal.) Gueidan & Cl. Roux - Freebury (2014: 110 on Verrucaria inficiens First record)
  157. Heteroplacidium zamenhofianum (Clauzade & Cl. Roux) Cl. Roux - Freebury (2014: 110 First record for Canada)

  158. Hymenelia epulotica (Ach.) Arnold - Thomson (1997: 253 as Ionaspis epulotica)
  159. Hymenelia heteromorpha (Kremp.) Lutzoni - Thomson (1997: 255 as Ionaspis schismatopis)
  160. Hymenelia melanocarpa (Kremp.) Arnold - Thomson (1997: 254 as Ionaspis melanocarpa)

  161. Hypocenomyce scalaris (Ach. ex Lilj.) M. Choisy - Thomson (1997: 248)

  162. Hypogymnia physodes (L.) Nyl. - Looman (1962: 302 as Parmelia physodes), Thomson (1984: 241), Freebury (2014: 110)
  163. Hypogymnia subobscura (Vain.) Poelt - Thomson (1984: 242)

  164. Icmadophila ericetorum (L.) Zahlbr. - Looman (1962: 300), Thomson (1997: 249)

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

  166. Kaernefeltia californica (Tuck.) A. Thell & Goward - Looman (1962: 302 as Cornicularia californica)

  167. Lasallia papulosa (Ach.) Llano - Thomson (1984: 245)
  168. Lasallia pensylvanica (Hoffm.) Llano - Thomson (1984: 246)

  169. Lathagrium undulatum (Laur. ex Flot.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 194 as Collema undulatum)

  170. Lecania cyrtella (Ach.) Th. Fr. - Macoun (1902: xx as Biatora cyrtella), Freebury (2014: 110)
  171. Lecania erysibe (Ach.) Mudd - Looman (1962: 300), Thomson (1997: 257)
  172. Lecania fuscella (Schaer.) Körb. - Freebury (2014: 110)

  173. Lecanora albellula Nyl. - Freebury (2014: 110)
  174. Lecanora albopruinosa Looman - Looman (1962: 300 Type in Experimental Farm)
  175. Lecanora allophana (Ach.) Nyl. - Looman (1962: 300), Looman (1962: 301 as Lecanora subfusca), Thomson (1997: 264)
  176. Lecanora argentea Oxner & Volkova - Thomson (1997: 281 as Lecanora fuliginosa)
  177. Lecanora argopholis (Ach.) Ach. - Looman (1962: 301 as Lecanora oregana), Thomson (1997: 267), Freebury (2014: 110)
  178. Lecanora cadubriae (A. Massal.) Hedl. - Thomson (1997: 271)
  179. Lecanora cenisia Ach. - Thomson (1997: 272)
  180. Lecanora chlarotera Nyl. - Thomson (1997: 301 as Lecanora rugosella)
  181. Lecanora circumborealis Brodo & Vitik. - Thomson (1997: 274)
  182. Lecanora contractula Nyl. - Thomson (1997: 276)
  183. Lecanora dispersa (Pers.) Sommerf. - Looman (1962: 300), Thomson (1997: 278)
  184. Lecanora epibryon (Ach.) Ach. - Looman (1962: 300), Thomson (1997: 279)
  185. Lecanora flowersiana H. Magn. - Looman (1962: 300), Freebury (2014: 110)
  186. Lecanora garovaglii (Körb.) Zahlbr. subsp. garovaglii - Freebury (2014: 110)
  187. Lecanora geophila (Th. Fr.) Poelt- Thomson (1997: 283)
  188. Lecanora hagenii (Ach.) Ach. - Looman (1962: 300), Thomson (1997:286), Freebury (2014: 110)
  189. Lecanora hypoptoides Nyl. - Looman (1962: 300)
  190. Lecanora intricata (Ach.) Ach.- Thomson (1997: 288)
  191. Lecanora muralis (Schreb.) Rabenh. - Looman (1962: 301), Thomson (1997: 295), Freebury (2014: 110)
  192. Lecanora polytropa (Ehrh. in Hoffm.) Rabenh. - Looman (1962: 301), Argus (1964: 148), Thomson (1997: 299)
  193. Lecanora pulicaris (Pers.) Ach. - Thomson (1997: 301)
  194. Lecanora rugosella Zahlbr. - Freebury (2014: 110)
  195. Lecanora rupicola (L.) Zahlbr. - Thomson (1997: 303)
  196. Lecanora sambuci (Pers.) Nyl. - Thomson (1997: 306)
  197. Lecanora symmicta (Ach.) Ach. - Looman (1962: 301), Thomson (1997: 309)
  198. Lecanora valesiaca (Müll. Arg.) Stizenb. - Freebury (2014: 110 First record)
  199. Lecanora varia (Hoffm.) Ach. - Looman (1962: 301), Thomson (1997: 311)
  200. Lecanora zosterae (Ach.) Nyl. var. zosterae - Freebury (2014: 110)

  201. Lecidea atrobrunnea (Ramond ex Lam. & DC.) Schaer. subsp. atrobrunnea - Freebury (2014: 111 First record)
  202. Lecidea auriculata Th. Fr. subsp. auriculata - Looman (1962: 298), Freebury (2014: 111)
  203. Lecidea brachyspora (Th. Fr.) Nyl. - Thomson (1997: 333)
  204. Lecidea laboriosa Müll. Arg. - Thomson (1997: 358 as Lecidea leptoboloides)
  205. Lecidea lapicida (Ach.) Ach. var. lapicida - Looman (1962: 298), Thomson (1997: 357)
  206. Lecidea lithophila (Ach.) Ach. - Thomson (1997: 362)
  207. Lecidea nylanderi (Anzi) Th. Fr. - Looman (1962: 298), Thomson (1997: 365)
  208. Lecidea tessellata Flörke - Looman (1962: 298), Thomson (1997: 384), Freebury (2014: 111)
  209. Lecidea turgidula Fr. - Thomson (1997: 388)

  210. Lecidella carpathica Körb. - Looman (1962: 298 as Lecidea latypiza), Thomson (1997: 395)
  211. Lecidella elaeochroma (Ach.) M. Choisy - Looman (1962: 298 as Lecidea olivacea), Thomson (1997: 396)
  212. Lecidella euphorea (Flörke) Hertel - Thomson (1997: 398), Freebury (2014: 111)
  213. Lecidella patavina (A. Massal.) Knoph & Leuckert - Thomson (1997: 392 as Lecidella alaiensis), Freebury (2014: 111)
  214. Lecidella stigmatea (Ach.) Hertel & Leuck. - Looman (1962: 298 as Lecidea stigmatea), Looman (1962: 298 as Lecidea vulgata), Looman (1962: 298 as Lecidea micacea), Thomson (1997: 402), Freebury (2014: 111)
  215. Lecidella wulfenii (Hepp) Körb. - Freebury (2014: 111 First record)

  216. Leproplaca cirrochroa (Ach.) Arup, Frödén & Søchting - Looman (1962: 303 as Caloplaca cirrochroa)

  217. Leptogium nanum Herre - Looman (1962: 296), Freebury (2014: 111)
  218. Leptogium saturninum (Dicks.) Nyl. - Thomson (1984: 262)

  219. Letharia vulpina (L.) Hue - Looman (1962: 302)

  220. Lobaria scrobiculata (Scop.) DC. - Thomson (1984: 271)

  221. Lobothallia alphoplaca (Wahlenb. in Ach.) Hafellner - Looman (1962: 300 as Lecanora alphoplaca), Thomson (1997: 59 as Aspicilia alphoplaca), Freebury (2014: 111)
  222. Lobothallia praeradiosa (Nyl.) Hafellner - Freebury (2014: 111 First record)

  223. Massalongia carnosa (Dicks.) Körb. - Thomson (1984: 274)

  224. Megaspora verrucosa (Ach.) Hafellner & V. Wirth - Looman (1962: 301 as Lecanora verrucosa), Thomson (1997: 443 as Pachyospora verrucosa), Freebury (2014: 111)

  225. Melanelia hepatizon (Ach.) A. Thell - Thomson (1984: 82 as Cetraria hepatizon)

  226. Melanelixia albertana (Ahti) O. Blanco et al. - Freebury (2014: 111)
  227. Melanelixia subaurifera (Nyl.) O. Blanco et al. - Thomson (1984: 316 as Parmelia subaurifera)

  228. Melanohalea elegantula (Zahlbr.) O. Blanco et al. - Looman (1962: 302 as Parmelia elegantula), Freebury (2014: 111)
  229. Melanohalea exasperata (Ach.) O. Blanco et al. - Looman (1962: 302 as Parmelia exasperata)
  230. Melanohalea exasperatula (Nyl.) O. Blanco et al. - Looman (1962: 302 as Melanelia exasperatula), Thomson (1984: 300 as Parmelia exasperatula), Freebury (2014: 111)
  231. Melanohalea olivacea (L.) O. Blanco et al. - Looman (1962: 302 as Parmelia olivacea), Thomson (1984: 306 as Parmelia olivacea)
  232. Melanohalea septentrionalis (Lynge) O. Blanco et al. - Thomson (1984: 311 as Parmelia septentrionalis)
  233. Melanohalea subolivacea (Nyl.) O. Blanco et al. - Freebury (2014: 111)

  234. Micarea incrassata Hedl. - Freebury (2014: 111 First record)
  235. Micarea melaena (Nyl.) Hedl. - Looman (1962: 297 as Bacidia melaena)
  236. Micarea misella (Nyl.) Hedl. - Freebury (2014: 111 First record)

  237. Miriquidica scotopholis (Tuck.) B. D. Ryan & Timdal - Looman (1962: 298 as Lecidea scotopholis)

  238. Montanelia disjuncta (Erichsen) Divakar et al. - Looman (1962: 302 as Parmelia disjuncta), Thomson (1984: 299 as Parmelia disjucta)
  239. Montanelia sorediata (Almb.) Divakar et al. - Thomson (1984: 312 as Parmelia sorediosa)
  240. Montanelia tominii (Oxner) Divakar et al. - Freebury (2014: 111)

  241. Mycobilimbia berengeriana (A. Massal.) Hafellner & V. Wirth - Looman (1962: 298 as Lecidea berengeriana), Thomson (1997: 331 as Lecidea berengeriana)

  242. Mycoblastus alpinus (Fr.) Kernst. - Thomson (1997: 425)
  243. Mycoblastus sanguinarius (L.) Norman - Thomson (1997: 426)

  244. Myriospora smaragdula (Wahlenb. in Ach.) K. Knudsen & B. Abbott - Looman (1962: 299 as Acarospora smaragdula), Thomson (1997: 34 as Acarospora smaragdula)

  245. Nephroma arcticum (L.) Torss. - Thomson (1984: 277)
  246. Nephroma bellum (Spreng.) Tuck. - Thomson (1984: 278)
  247. Nephroma helveticum Ach. subsp. helveticum - Thomson (1984: 280)

  248. Ochrolechia frigida (Sw.) Lynge - Thomson (1997: 431)
  249. Ochrolechia inaequatula (Nyl.) Zahlbr. - Thomson (1997: 434)
  250. Ochrolechia upsaliensis (L.) A. Massal. - Looman (1962: 301), Thomson (1997: 436), Freebury (2014: 111)

  251. Ophioparma lapponica (Räsänen) Hafellner & Rogers - Thomson (1997: 440)

  252. Protopannaria pezizoides (Web.) Trev. - Thomson (1984: 294 as Pannaria pezizoides)

  253. Parmelia omphalodes (L.) Ach. - Thomson (1984: 308 as Parmelia omphalodes)
  254. Parmelia saxatilis (L.) Ach. - Thomson (1984: 310)
  255. Parmelia sulcata Tayl. - Looman (1962: 302), Thomson (1984: 318), Freebury (2014: 111)

  256. Parmeliopsis ambigua (Wulfen) Nyl. - Looman (1962: 302), Thomson (1984: 325), Freebury (2014: 111)
  257. Parmeliopsis hyperopta (Ach.) Arnold - Looman (1962: 302), Thomson (1984: 326)

  258. Parvoplaca tiroliensis (Zahlbr.) Arup, Søchting & Frödén - Thomson (1997: 173 as Caloplaca tiroliensis), Freebury (2014: 108 as Caloplaca tiroliensis)

  259. Peltigera aphthosa (L.) Willd. - Looman (1962: 297), Thomson (1984: 329)
  260. Peltigera canina (L.) Willd. - Thomson (1984: 332)
  261. Peltigera didactyla (With.) J. R. Laundon - Looman (1962: 297 as Peltigera canina var. spuria f. sorediata), Freebury (2014: 111)
  262. Peltigera horizontalis (Huds.) Baumg. - Looman (1962: 297)
  263. Peltigera lepidophora (Nyl.) Vain. - Looman (1962: 297), Freebury (2014: 111)
  264. Peltigera leucophlebia (Nyl.) Gyeln. - Thomson (1984: 330 as Peltigera aphtosa var. leucophlebia)
  265. Peltigera malacea (Ach.) Funck. - Looman (1962: 297), Thomson (1984: 339)
  266. Peltigera polydactylon (Neck.) Hoffm. - Looman (1962: 297), Thomson (1984: 343)
  267. Peltigera ponojensis Gyeln. - Freebury (2014: 111)
  268. Peltigera rufescens (Weiss) Humb. - Looman (1962: 297 as Peltigera canina var. rufescens), Thomson (1984: 333 as Peltigera canina var. rufescens), Freebury (2014: 111)
  269. Peltigera scabrosa Th. Fr. - Thomson (1984: 344)
  270. Peltigera venosa (L.) Hoffm. - Looman (1962: 297)

  271. Peltula patellata (Bagl.) Swinscow & Krog - Looman (1962: 297 as Heppia leptopholis)

  272. Phaeophyscia ciliata (Hoffm.) Moberg - Looman (1962: 303 as Physcia ciliata)
  273. Phaeophyscia constipata (Norrl. & Nyl.) Moberg - Looman (1962: 303 as Physcia constipata), Thomson (1984: 347), Freebury (2014: 111)
  274. Phaeophyscia hirsuta (Mereschk.) Essl. - Freebury (2014: 111)
  275. Phaeophyscia nigricans (Flörke) Moberg - Looman (1962: 304 as Physcia nigricans), Freebury (2014: 111)
  276. Phaeophyscia orbicularis (Neck.) Moberg - Looman (1962: 304 as Physcia nigrescens), Freebury (2014: 111)
  277. Phaeophyscia sciastra (Ach.) Moberg - Looman (1962: 304 as Physcia sciastra), Argus (1964: 149 as Physcia sciastra)

  278. Phaeorrhiza nimbosa (Fr.) Mayrh. & Poelt - Looman (1962: 303 as Rinodina nimbosa), Thomson (1997: 467)
  279. Phaeorrhiza sareptana (Tomin) Mayrh. & Poelt - Thomson (1997: 466), Freebury (2014: 111)

  280. Physcia adscendens (Fr.) Oliv. - Looman (1962: 303), Thomson (1984: 352), Freebury (2014: 112)
  281. Physcia aipolia (Humb.) Fürnr. - Looman (1962: 303), Thomson (1984: 353), Freebury (2014: 112)
  282. Physcia alnophila (Vain.) Loht., Moberg, Myllys & Tehler - Freebury (2014: 112 First record)
  283. Physcia caesia (Hoffm.) Fürnr. - Looman (1962: 303), Thomson (1984: 354), Freebury (2014: 112)
  284. Physcia dimidiata (Arnold) Nyl. - Freebury (2014: 112 First record)
  285. Physcia dubia (Hoffm.) Lettau - Looman (1962: 303), Looman (1962: 304 as Physcia intermedia), Freebury (2014: 112)
  286. Physcia phaea (Tuck.) J. W. Thomson - Thomson (1984: 356)
  287. Physcia stellaris (L.) Nyl. - Looman (1962: 304), Freebury (2014: 112)
  288. Physcia tenella (Scop.) DC. - Looman (1962: 304)

  289. Physciella chloantha (Ach.) Essl. - Freebury (2014: 112 First record)

  290. Physconia detersa (Nyl.) Poelt - Thomson (1984: 359 as Physcia detersa)
  291. Physconia muscigena (Ach.) Poelt - Looman (1962: 304 as Physcia muscigena), Argus (1964: 149 as Physcia muscigena), Thomson (1984: 360), Freebury (2014: 112)
  292. Physconia perisidiosa (Erichsen) Moberg - Freebury (2014: 112)

  293. Placidium californicum Breuss - Freebury (2014: 112 First record for Canada)
  294. Placidium squamulosum (Ach.) Breuss - Looman (1962: 296 as Dermatocarpon hepaticum), Thomson (1984: 215 as Dermatocarpon hepaticum), Freebury (2014: 112)

  295. Placopyrenium fuscellum (Turn.) Gueidan & Cl. Roux - Looman (1962: 295 as Verrucaria fuscella)

  296. Placynthiella oligotropha (J. R. Laundon) Coppins & P. James - Thomson (1997: 474)

  297. Platismatia glauca (L.) W. L. Culb. & C. F. Culb. - Thomson (1984: 368)

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

  299. Polycauliona candelaria (L.) Frödén, Arup, & Søchting - Argus (1964: 149 as Xanthoria candelaria), Thomson (1984: 483 as Xanthoria candelaria)
  300. Polycauliona polycarpa (Hoffm.) Frödén, Arup, & Søchting - Looman (1962: 303 as Xanthoria polycarpa), Thomson (1984: 487 as Xanthoria polycarpa)

  301. Polysporina simplex (Davis) Vezda - Looman (1962: 299 as Sarcogyne simplex), Thomson (1997: 486), Freebury (2014: 112)
  302. Polysporina urceolata (Anzi) Brodo - Freebury (2014: 112 First record)

  303. Porpidia crustulata (Ach.) Hertel & Knoph - Freebury (2014: 112)
  304. Porpidia lowiana Gowan - Thomson (1997: 494)
  305. Porpidia thomsonii Gowan - Thomson (1997: 498)

  306. Protomicarea limosa (Ach.) Hafellner - Thomson (1997: 361 as Lecidea limosa)

  307. Protoparmelia badia (Hoffm.) Hafellner - Thomson (1997: 269 as Lecanora badia)

  308. Psora cerebriformis W. A. Weber - Freebury (2014: 112)
  309. Psora decipiens (Hedwig) Hoffm. - Looman (1962: 298 as Lecidea decipiens), Thomson (1997: 507), Freebury (2014: 112)
  310. Psora himalayana (Church. Bab.) Timdal - Thomson (1997: 507)
  311. Psora rubiformis Wahl. - Argus (1964: 149 as Lecidea rubiformis)
  312. Psora russellii (Tuck.) A. Schneider - Looman (1962: 298 as Lecidea russellii)
  313. Psora tuckermanii R. A. Anderson ex Timdal - Freebury (2014: 112)

  314. Psoroma hypnorum (Vahl) S. Gray - Looman (1962: 297)

  315. Psorotichia nigra H. Magn. - Looman (1962: 296)

  316. Punctelia rudecta (Ach.) Krog - Looman (1962: 302 as Parmelia rudecta)

  317. Ramalina americana Hale - Looman (1962: 302 erroneously as Ramalina fastigiata)
  318. Ramalina fraxinea (L.) Ach. - Looman (1962: 302)
  319. Ramalina intermedia (Del. ex Nyl.) Nyl. - Argus (1964: 149), Thomson (1984: 379)
  320. Ramalina pollinaria (Westr.) Ach. - Looman (1962: 302)
  321. Ramalina sinensis Jatta - Looman (1962: 302)

  322. Rhizocarpon badioatrum (Flörke ex Spreng.) Th. Fr. - Thomson (1997: 524)
  323. Rhizocarpon cinereovirens (Müll. Arg.) Vain. - Thomson (1997: 528)
  324. Rhizocarpon cookeanum H. Magn. - Looman (1962: 298)
  325. Rhizocarpon copelandii (Körb.) Th. Fr. - Thomson (1997: 531)
  326. Rhizocarpon disporum (Naeg. ex Hepp) Müll. Arg. - Looman (1962: 298), Argus (1964: 149), Freebury (2014: 112)
  327. Rhizocarpon geminatum Körb. - Thomson (1997: 537)
  328. Rhizocarpon geographicum (L.) DC. - Argus (1964: 149), Thomson (1997: 538)
  329. Rhizocarpon grande (Flörke ex Flotow) Arnold - Looman (1962: 298), Thomson (1997: 539)
  330. Rhizocarpon hochstetteri (Körb.) Vainio - Thomson (1997: 540)
  331. Rhizocarpon norvegicum Räsänen - Thomson (1997: 544)
  332. Rhizocarpon obscuratum auct. - Argus (1964: 149), Thomson (1997: 544)
  333. Rhizocarpon renneri Poelt - Freebury (2014: 112 on Dimelaena oreina First record for Canada)
  334. Rhizocarpon riparium Räsänen - Thomson (1997: 548)
  335. Rhizocarpon superficiale (Schaer.) Malme - Thomson (1997: 551)
  336. Rhizocarpon viridiatrum (Wulfen) Körb. - Freebury (2014: 112 First record)

  337. Rhizoplaca chrysoleuca (Sm.) Zopf - Looman (1962: 301 as Lecanora rubina), Thomson (1997: 554), Freebury (2014: 112)
  338. Rhizoplaca haydenii (Ach.) Ach. - Looman (1962: 300 as Lecanora haydenii)
  339. Rhizoplaca melanophthalma (Ramond) Leuck. & Poelt - Looman (1962: 301 as Lecanora melanophthalma), Argus (1964: 148 as Lecanora melanophthalma), Thomson (1997: 555), Freebury (2014: 112)
  340. Rhizoplaca peltata (Ramond) Leuckert & Poelt - Looman (1962: 301 as Lecanora peltata), Thomson (1997: 555)

  341. Rinodina archaea (Ach.) Vain. - Looman (1962: 303), Thomson (1997: 560)
  342. Rinodina bischoffii (Hepp) A. Massal. - Freebury (2014: 112)
  343. Rinodina conradii Körb. - Freebury (2014: 112 First record)
  344. Rinodina freyi H. Magn. - Freebury (2014: 112)
  345. Rinodina juniperina Sheard - Freebury (2014: 112 First record for Canada)
  346. Rinodina lobulata H. Mayrhofer & Sheard - Freebury (2014: 112 First record for Canada)
  347. Rinodina luridata (Körb.) H. Mayrhofer, Scheidegger & Sheard - Freebury (2014: 112 First record for Canada)
  348. Rinodina metaboliza Vain. - Thomson (1997: 566)
  349. Rinodina mniaraea (Ach.) Körb. - Looman (1962: 303), Thomson (1997: 567)
  350. Rinodina parasitica H. Mayrhofer & Poelt - Freebury (2014: 113 First record for Canada)
  351. Rinodina pyrina (Ach.) Arnold - Looman (1962: 303), Freebury (2014: 113)
  352. Rinodina straussii J. Steiner - Freebury (2014: 113 First record for Canada)
  353. Rinodina terrestris H. Magn. - Thomson (1997: 568 as Rinodina mucronatula), Freebury (2014: 113)
  354. Rinodina turfacea (Wahlenb.) Körb. - Looman (1962: 303)
  355. Rinodina venostana Buschardt & H. Mayrhofer - Freebury (2014: 113 First record for North America)

  356. Ropalospora chlorantha (Tuck.) S. Ekman - Looman (1962: 297 as Bacidia chlorantha)

  357. Rufoplaca arenaria (Pers.) Arup, Søchting & Frödén - Freebury (2014: 107 as Caloplaca arenaria First record)

  358. Rusavskia elegans (Link) S. Y. Kondr. & Kärnefelt - Looman (1962: 303 as Caloplaca elegans), Argus (1964: 148 as Caloplaca elegans), Thomson (1984: 484 as Xanthoria elegans), Freebury (2014: 114 as Xanthoria elegans)
  359. Rusavskia sorediata (Vain.) S. Y. Kondr. & Kärnefelt - Thomson (1984: 487 as Xanthoria sorediata)

  360. Sarcogyne clavus (DC. in Lam. & DC.) Kremp. - Looman (1962: 299), Thomson (1997: 577)
  361. Sarcogyne hypophaea (Nyl.) Arnold - Freebury (2014: 113 First record)
  362. Sarcogyne magnussonii B. de Lesd. - Freebury (2014: 113)
  363. Sarcogyne regularis Körb. - Freebury (2014: 113)
  364. Sarcogyne similis H. Magn. - Freebury (2014: 113 First record)

  365. Schaereria tenebrosa (Flot.) Hertel & Poelt - Thomson (1997: 584)

  366. Scytinium tenuissimum (Dicks.) Otálora, P. M. Jørg. & Wedin - Looman (1962: 296 as Leptogium tenuissimum), Thomson (1984: 264 as Leptogium tenuissimum), Freebury (2014: 113)

  367. Solitaria chrysophthalma (Degel.) Arup, Søchting & Frödén - Freebury (2014: 107 as Caloplaca chrysophthalma First record)

  368. Squamarina lentigera (Web.) Poelt - Looman (1962: 300 as Lecanora lentigera)

  369. Staurothele areolata (Ach.) Lettau - Freebury (2014: 113)
  370. Staurothele drummondii (Tuck.) Tuck. - Looman (1962: 295 as Staurothele clopima), Looman (1962: 295 as Staurothele perradiata), Thomson (1997: 595), Freebury (2014: 113)
  371. Staurothele elenkinii H. Magn. - Looman (1962: 295 as Staurothele sessilis), Freebury (2014: 113)
  372. Staurothele fissa (Tayler) Zwackh - Thomson (1997: 596)
  373. Staurothele monicae (Zahlbr.) Wetmore - Freebury (2014: 113 First record)

  374. Stereocaulon alpinum Laurer ex Funck - Thomson (1984: 400)
  375. Stereocaulon condensatum Hoffm. - Thomson (1984: 407)
  376. Stereocaulon dactylophyllum Flörke - Thomson (1984: 410)
  377. Stereocaulon grande (Magn.) Magn. - Thomson (1984: 413)
  378. Stereocaulon paschale (L.) Hoffm. - Thomson (1984: 418)
  379. Stereocaulon saxatile Magn. - Thomson (1984: 423)
  380. Stereocaulon tomentosum Fries - Looman (1962: 299), Thomson (1984: 428)

  381. Strangospora moriformis (Ach.) Stein - Thomson (1997: 599)

  382. Tetramelas papillatus (Sommerf.) Kalb - Looman (1962: 303 as Buellia papillata), Freebury (2014: 113)
  383. Tetramelas triphragmioides (Anzi) A. Nordin & Tibell - Looman (1962: 303 as Buellia triphragmioides)

  384. Thalloidima sedifolium (Scop.) Kistenich, Timdal, Bendiksby & S. Ekman - Looman (1962: 298 as Toninia coeruleonigricans), Thomson (1997: 614 as Toninia coeruleonigricans), Freebury (2014: 113 as Toninia sedifolia)

  385. Toninia populorum (A. Massal.) Kistenich, Timdal, Bendiksby & S. Ekman - Looman (1962: 297 as Bacidia acclinis), Thomson (1997: 107 as Bacidia populorum)
  386. Toninia tristis (Th. Fr.) Th. Fr. - Looman (1962: 298 as Toninia tabacina), Thomson (1997: 620 as Toninia tristis)

  387. Trapeliopsis flexuosa (Fr.) Coppins & P. James - Freebury (2014: 113)
  388. Trapeliopsis granulosa (Hoffm.) Lumbsch - Thomson (1997: 624)

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

  390. Tuckermannopsis americana (Sprengel) Hale - Thomson (1984: 81 as Cetraria halei)
  391. Tuckermannopsis ciliaris (Ach.) Gyeln. - Looman (1962: 302 as Cetraria ciliaris)
  392. Tuckermannopsis sepincola (Ehrh.) Hale - Looman (1962: 302 as Cetraria scutata), Looman (1962: 302 as Cetraria sepincola), Thomson (1984: 73 as Cetraria chlorophylla), Thomson (1984: 94 as Cetraria sepincola)

  393. Umbilicaria deusta (L.) Baumg. - Thomson (1984: 449)
  394. Umbilicaria hyperborea (Ach.) Hoffm. var. hyperborea - Argus (1964: 149), Thomson (1984: 453)
  395. Umbilicaria mammulata (Ach.) Tuck. - Thomson (1984: 454)
  396. Umbilicaria muehlenbergii (Ach.) Tuck. - Thomson (1984: 26 as Actinogyra muehlenbergii)
  397. Umbilicaria vellea (L.) Ach. - Thomson (1984: 460)

  398. Usnea cavernosa Tuck. - Thomson (1984: 463)
  399. Usnea dasypoga (Ach.) Röhl. - Thomson (1984: 465)
  400. Usnea glabrata (Ach.) Vain. - Looman (1962: 302), Looman (1962: 302 as Usnea sorediifera)
  401. Usnea glabrescens (Nyl. ex Vain.) Vain. - Looman (1962: 302 as Usnea compacta)
  402. Usnea hirta (L.) F. H. Wigg. - Looman (1962: 302), Thomson (1984: 466), Freebury (2014: 113)
  403. Usnea lapponica Vain. - Looman (1962: 302), Freebury (2014: 113)
  404. Usnea scabrata Mot. - Looman (1962: 302), Looman (1962: 302 as Usnea scabrata subsp. nylanderiana), Thomson (1984: 468 as Usnea scabrata subsp. nylanderiana)
  405. Usnea subfloridana Stirt. - Looman (1962: 302 erroneously as Usnea comosa), Thomson (1984: 469)
  406. Usnea substerilis Mot. - Looman (1962: 302), Thomson (1984: 470)

  407. Verrucaria bernaicensis Malbr. - Freebury (2014: 113 First record for Canada)
  408. Verrucaria fusca Pers. - Freebury (2014: 113 First record for Canada)
  409. Verrucaria glaucovirens Grummann - Looman (1962: 296 as Verrucaria virens), Freebury (2014: 113)
  410. Verrucaria inficiens Breuss - Freebury (2014: 113 First record for Canada)
  411. Verrucaria margacea (Wahlenb. in Ach.) Wahlenb. - Looman (1962: 295), Thomson (1997: 639)
  412. Verrucaria muralis Ach. - Thomson (1997: 641), Freebury (2014: 113)
  413. Verrucaria nigrescens Pers. - Thomson (1997: 642)
  414. Verrucaria othmarii K. Knudsen & B. Abbott - Freebury (2014: 114 First record for Canada)
  415. Verrucaria rupestris Schrad. - Thomson (1997: 643)
  416. Verrucaria sphaerospora Anzi - Freebury (2014: 114 First record for Canada)
  417. Verrucaria viridula (Schrad.) Ach. - Looman (1962: 296)

  418. Vulpicidia pinastri (Scop.) J.-E. Mattsson & M. J. Lai - Looman (1962: 302 as Cetraria pinastri), Thomson (1984: 93 as Cetraria pinastri), Freebury (2014: 114)

  419. Xanthocarpia crenulatella (Nyl.) Frödén, Arup & Søchting - Freebury (2014: 107 as Caloplaca crenulatella)
  420. Xanthocarpia tominii (Savicz) Frödén, Arup & Søchting - Thomson (1997: 173 as Caloplaca tominii), Freebury (2014: 108 as Caloplaca tominii)

  421. Xanthomendoza fallax (Hepp) Söchting, Kärnefelt & S. Kondr. - Looman (1962: 303 as Xanthoria fallax), Thomson (1984: 486 as Xanthoria fallax), Freebury (2014: 114)
  422. Xanthomendoza fulva (Hoffm.) Søchting, Kärnefelt & S. Y. Kondr. - Freebury (2014: 114 First record)
  423. Xanthomendoza montana (L. Lindblom) Søchting, Kärnefelt & S. Y. Kondr. - Freebury (2014: 114)
  424. Xanthomendoza trachyphylla (Tuck.) Frödén, Arup & Søchting - Looman (1962: 303 as Caloplaca trachyphylla), Thomson (1997: 177 as Caloplaca trachyphylla), Freebury (2014: 108 as Caloplaca trachyphylla)

  425. Xanthoparmelia camtschadalis (Ach.) Hale - Freebury (2014: 114 First record for Canada)
  426. Xanthoparmelia chlorochroa (Tuck.) Hale - Looman (1962: 302 as Parmelia chlorochroa), Thomson (1984: 477), Freebury (2014: 114)
  427. Xanthoparmelia coloradoensis (Gyeln.) Hale - Thomson (1984: 480 erroneously as Xanthoparmelia taractica)
  428. Xanthoparmelia conspersa (Ehrh. ex Ach.) Hale - Looman (1962: 302 as Parmelia conspersa), Argus (1964: 149 as Parmelia conspersa)
  429. Xanthoparmelia conspersa (Ehrh. ex Ach.) Hale - Looman (1962: 302 as Parmelia isidiata)
  430. Xanthoparmelia idahoensis Hale - Freebury (2014: 114)
  431. Xanthoparmelia lineola (E. C. Berry) Hale - Argus (1964: 149 as Parmelia conspersa), Freebury (2014: 114)
  432. Xanthoparmelia loxodes (Nyl.) O. Blanco et al. - Freebury (2014: 114 First record)
  433. Xanthoparmelia mexicana (Gyeln.) Hale - Freebury (2014: 114)
  434. Xanthoparmelia stenophylla (Ach.) Athi & D. Hawksw. - Looman (1962: 302 as Parmelia stenophylla)
  435. Xanthoparmelia subdecipiens (Vain.) Hale - Freebury (2014: 114 First record)
  436. Xanthoparmelia wyomingica (Gyeln.) Hale - Freebury (2014: 114)

  437. Xanthoria tibellii S. Y. Kondr. & Kärnefelt - Freebury (2014: 114)

  438. Xylographa parallela (Ach.: Fr.) Behlen & Desberger - Thomson (1997: 646 as Xylographa abietina)