Checklist of lichens of Minnesota (USA)
Version 31 December 2018

 

  1. Acarospora americana H. Magn. - Wetmore (1981: 487), Wetmore (2005: 85 without records)
  2. Acarospora badiofusca (Nyl.) Th. Fr. - Wetmore (1981: 487), Wetmore (2005: 85 without records)
  3. Acarospora fuscata (Nyl.) Arnold - Wetmore (1981: 487), Thomson (1997: 24), Wetmore (2005: 85 without records)
  4. Acarospora schleicheri (Ach.) A. Massal. - Thomson (1997: 33), Wetmore (2005: 85 without records)

  5. Acrocordia cavata (Ach.) R. C. Harris - Wetmore (2005: 85 without records)
  6. Acrocordia megalospora (Fink) R. C. Harris - Fink (1910: 237 as Pyrenula megalospora Protologue), Harris (1973: 12 as Arthopyrenia finkii), Wetmore (2005: 85 without records) Type in Ann Arbor, USA MICH

  7. Ahtiana aurescens (Tuck.) A. Thell & Randlane - Wetmore (1981: 487 as Cetraria aurescens), Wetmore (2005: 86 as Cetraria aurescens without records)

  8. Alyxoria varia (Pers.) Ertz & Tehler - Fink (1910: 53 as Opegrapha varia), Fink (1910: 53 as Opegrapha varia varia pulicaris), Wetmore (1981: 489 as Opegrapha lichenoides), Wetmore (1981: 489 as Opegrapha pulicaris), Wetmore (2005: 89 as Opegrapha varia without records)

  9. Amandinea dakotensis (H. Magn.) P. May & Sheard - Wetmore (1981: 490 as Rinodina dakotensis), Wetmore (2005: 85 without records)
  10. Amandinea milliaria (Tuck.) P. F. May & Sheard - Wetmore (2005: 85 without records)
  11. Amandinea polyspora (Willey) E. Lay & P. F. May - Thomson (1997: 137 as Buellia polyspora), Wetmore (2005: 85 without records)
  12. Amandinea punctata (Hoffm.) Coppins & Scheid. - Wetmore (1981: 487 as Buellia punctata), Willson & Vinyard (1986: 12 as Buellia punctata), Thomson (1997: 138 as Buellia punctata), Wetmore (2005: 85 without records)
  13. Amandinea turgescens (Tuck.) Marbach - Wetmore (2005: 85 as Buellia turgescens without records)

  14. Anaptychia crinalis (Schleich.) Vezda - Thomson (1984: 40 erroneously as Anaptychia kaspica), Wetmore (2005: 85 erroneously as Anaptychia setifera without records)
  15. Anaptychia palmulata (Michx.) Vain. - Wetmore (1981: 487), Wetmore (2005: 85 without records)

  16. Anisomeridium biforme (Borrer) R. C. Harris - Wetmore (2005: 85 without records)
  17. Anisomeridium polypori (Ellis & Everh.) M.E. Barr - Wetmore (2005: 85 as Anisomeridium nyssaegenum without records)

  18. Arctoparmelia centrifuga (L.) Hale - Wetmore (2005: 85 without records)
  19. Arctoparmelia subcentrifuga (Oxner) Hale - Wetmore (2005: 85 without records)

  20. Arthonia didyma Körb. - Wetmore (1981: 487), Wetmore (2005: 85 without records)
  21. Arthonia dispersa (Schrad.) Nyl. - Fink (1910: 57), Wetmore (1981: 487), Wetmore (2005: 85 without records)
  22. Arthonia patellulata Nyl. - Fink (1910: 56), Wetmore (1981: 487), Thomson (1997: 47), Wetmore (2005: 85 without records)
  23. Arthonia punctiformis Ach. - Fink (1910: 57), Wetmore (2005: 85 without records)
  24. Arthonia radiata (Pers.) Ach. - Fink (1910: 58), Wetmore (1981: 487), Wetmore (2005: 85 without records)
  25. Arthonia ruana A. Massal. - Wetmore (1981: 487 as Arthothelium ruanideum), Wetmore (2005: 85 as Arthothelium ruanum without records)
  26. Arthonia spadicea Leight. - Wetmore (1981: 487 as Arthonia lurida)
  27. Arthonia vinosa Leight. - Wetmore (2005: 85 without records)

  28. Arthopyrenia cinereopruinosa (Schaer.) A. Massal. - Wetmore (1981: 487), Wetmore (2005: 85 without records)
  29. Arthopyrenia punctiformis A. Massal. - Wetmore (2005: 85 without records)

  30. Arthothelium spectabile A. Massal. - Fink (1910: 59), Wetmore (2005: 84 without records)

  31. Arthrorhaphis citrinella (Ach.) Poelt - Wetmore (2005: 85 without records)

  32. Arthrosporum populorum A. Massal. - Thomson (1997: 107 as Bacidia populorum), Wetmore (2005: 85 without records)

  33. Aspicilia cinerea (L.) Körb. - Wetmore (1981: 488 as Lecanora cinerea), Thomson (1997: 68), Wetmore (2005: 85 without records)

  34. Aspilidea myrinii (Fr.) Hafellner - Thomson (1997: 84 as Aspicilia myrinii)

  35. Athallia holocarpa (Hoffm.) Arup, Frödén & Søchting - Wetmore (1981: 487 as Caloplaca holocarpa), Willson & Vinyard (1986: 12 as Caloplaca holocarpa), Thomson (1997: 164 as Caloplaca holocarpa), Wetmore (2005: 86 as Caloplaca holocarpa without records)
  36. Athallia vitellinula (Nyl.) Arup, Frödén & Søchting - Wetmore (1981: 487 as Caloplaca vitellinula), Wetmore (2005: 86 as Caloplaca vitellinula without records)

  37. Bacidia bagliettoana (A. Massal. & De Not.) Jatta - Willson & Vinyard (1986: 11), Thomson (1997: 99), Wetmore (2005: 85 without records)
  38. Bacidia circumspecta (Norrl. & Nyl.) Malme - Wetmore (2005: 85 without records)
  39. Bacidia coprodes (Körb.) Lettau - Thomson (1997: 112 erroneously as Bacidia trachona)
  40. Bacidia diffracta S. Ekman - Wetmore (2005: 85 without records)
  41. Bacidia egenula (Nyl.) Arnold - Wetmore (2005: 84 without records)
  42. Bacidia granosa (Tuck.) Zahlbr. - Wetmore (2005: 85 without records)
  43. Bacidia igniarii (Nyl.) Oxner - Thomson (1997: 103)
  44. Bacidia incompta (Borrer) Anzi - Wetmore (2005: 85 without records)
  45. Bacidia laurocerasi (Delise ex Duby) Zahlbr. - Wetmore (1981: 487 as Bacidia atrogrisea), Wetmore (2005: 85 without records)
  46. Bacidia polychroa (Th. Fr.) Körb. - Wetmore (1981: 487 as Bacidia fuscorubella), Wetmore (2005: 85 without records)
  47. Bacidia rosella (Pers.) De Not. - Wetmore (2005: 85 without records)
  48. Bacidia rubella (Hoffm.) A. Massal. - Wetmore (1981: 487), Willson & Vinyard (1986: 11), Wetmore (2005: 85 without records)
  49. Bacidia schweinitzii (Fr. ex Tuck.) A. Schneid. - Wetmore (1981: 487), Wetmore (2005: 85 without records)
  50. Bacidia subincompta (Nyl.) Arnold - Wetmore (2005: 84 without records)
  51. Bacidia suffusa (Fr.) A. Schneid. - Wetmore (1981: 487), Wetmore (2005: 85 without records)

  52. Bacidina inundata (Fr.) Vezda - Wetmore (1981: 487 as Bacidia inundata), Wetmore (2005: 85 without records)

  53. Baeomyces carneus (Retz.) Flörke - Wetmore (1981: 487), Thomson (1984: 48)
  54. Baeomyces rufus (Huds.) Rebent. - Wetmore (1981: 487), Thomson (1984: 52), Wetmore (2005: 85 without records)

  55. Bagliettoa baldensis (A. Massal.) Vezda - Wetmore (2005: 84 as Verrucaria baldensis without records)

  56. Bellemerea cinereorufescens (Ach.) Clauzade & Cl. Roux - Wetmore (2005: 85 without records)

  57. Biatora efflorescens (Hedl.) Räsänen - Wetmore (1981: 488 as Lecidea epixanthoidiza), Wetmore (2005: 85 without records)
  58. Biatora epixanthoides (Nyl.) Diederich - Wetmore (2005: 85 without records)
  59. Biatora helvola Körb. ex Hellb. - Wetmore (1981: 489 as Lecidea helvola), Thomson (1997: 349 as Lecidea helvola), Wetmore (2005: 85 without records)
  60. Biatora ocelliformis (Nyl.) Arnold - Wetmore (2005: 84 without records), Printzen & Otte (2005: 58)
  61. Biatora pycnidiata Printzen & Tønsberg - Wetmore (2005: 84 without records)
  62. Biatora vernalis (L.) Fr. - Wetmore (1981: 489 as Lecidea vernalis), Thomson (1997: 389 as Lecidea vernalis), Wetmore (2005: 85 without records)

  63. Bilimbia accedens Arnold - Wetmore (1981: 487 as Bacidia accedens)
  64. Bilimbia sabuletorum (Schreb.) Arnold - Wetmore (1981: 487 as Bacidia sabuletorum), Thomson (1997: 422 as Mycobilimbia sabuletorum), Wetmore (2005: 85 as Bacidia sabuletorum without records)

  65. Blastenia ferruginea (Huds.) A. Massal. - Wetmore (2005: 85 as Caloplaca ferruginea without records)

  66. Botryolepraria lesdainii (Hue) Canals, Hern.-Mar., Gómez-Bolea & Llimona - Wetmore (2005: 84 as Lepraria lesdainii without records)

  67. Brownliella cinnabarina (Ach.) S. Y. Kondr., Kärnefelt, A. Thell, Elix, Jung Kim, A. S. Kondr. & Hur - Wetmore (1981: 487 as Caloplaca cinnabarina), Willson & Vinyard (1986: 12 as Caloplaca cinnabarina)

  68. Bryobilimbia hypnorum (Lib.) Fryday, Printzen & S. Ekman - Wetmore (1981: 489 as Lecidea fusca), Thomson (1997: 351 as Lecidea hypnorum), Wetmore (2005: 89 as Mycobilimbia hypnorum without records)

  69. Bryoria capillaris (Ach.) Brodo & D. Hawksw. - Thomson (1984: 55), Wetmore (2005: 85 without records)
  70. Bryoria furcellata (Fr.) Brodo & D. Hawksw. - Wetmore (1981: 487), Wetmore (2005: 85 without records)
  71. Bryoria fuscescens (Gyeln.) Brodo & D. Hawksw. - Thomson (1984: 57), Wetmore (2005: 85 without records)
  72. Bryoria nadvornikiana (Gyeln.) Brodo & D. Hawksw. - Thomson (1984: 61), Wetmore (2005: 85 without records)
  73. Bryoria trichodes (Michx.) Brodo & D. Hawksw. subsp. trichodes - Wetmore (1981: 487), Wetmore (2005: 85 without records)

  74. Buellia arnoldii Servít - Wetmore (1981: 487), Wetmore (2005: 85 without records)
  75. Buellia dialyta (Nyl.) Tuck. - Wetmore (2005: 85 without records)
  76. Buellia disciformis (Fr.) Mudd - Wetmore (1981: 487), Thomson (1997: 129), Wetmore (2005: 85 without records)
  77. Buellia erubescens Arnold - Wetmore (1981: 487 as Buellia stillingiana), Thomson (1997: 131)
  78. Buellia nigra (Fink) Sheard - Wetmore (2005: 85 without records)
  79. Buellia schaereri De Not. - Wetmore (1981: 487), Wetmore (2005: 85 without records)
  80. Buellia stigmaea Tuck. - Wetmore (2005: 85 without records)
  81. Buellia stillingiana J. Steiner - Wetmore (2005: 85 without records)

  82. Caeruleum heppii (Nägeli ex Körb.) K. Knudsen & Arcadia - Thomson (1997: 27 as Acarospora heppii)

  83. Caeruleum immersum (Fink) K. Knudsen & B. Abbott - Wetmore (2005: 85 as Acarospora immersa without records)
  84. Calicium abietinum Pers. - Wetmore (1981: 487), Thomson (1997: 143), Wetmore (2005: 85 without records)
  85. Calicium glaucellum Ach. - Wetmore (1981: 487), Wetmore (2005: 85 without records)
  86. Calicium parvum Tibell - Wetmore (1981: 487), Wetmore (2005: 85 without records)
  87. Calicium quercinum Pers. - Fink (1910: 47)
  88. Calicium salicinum Pers. - Wetmore (1981: 487), Thomson (1997: 144), Wetmore (2005: 85 without records)
  89. Calicium trabinellum (Ach.) Ach. - Fink (1910: 46 as Calicium trachelinum), Wetmore (1981: 487), Thomson (1997: 145), Wetmore (2005: 85 without records)

  90. Caloplaca ahtii Søchting - Wetmore (2005: 85 without records)
  91. Caloplaca atroalba (Tuck.) Zahlbr. - Wetmore (2005: 85 without records)
  92. Caloplaca brunneola Wetmore - Wetmore (1995: 818 Protologue), Wetmore (2005: 85 without records) Type
  93. Caloplaca cerina (Ehrh. ex Hedwig) Th. Fr. - Wetmore (1981: 487), Thomson (1997: 154), Wetmore (2005: 85 without records)
  94. Caloplaca chlorina (Flot.) Sandst. - Wetmore (2005: 85 without records)
  95. Caloplaca epithallina Lynge - Wetmore (2005: 85 without records)
  96. Caloplaca fraudans (Th. Fr.) H. Olivier - Thomson (1997: 162)
  97. Caloplaca grimmiae (Nyl.) H. Olivier - Wetmore (2005: 86 without records)
  98. Caloplaca microphyllina (Tuck.) Hasse - Wetmore (2005: 86 without records)
  99. Caloplaca parvula Wetmore - Wetmore (1994: 831 Protologue), Wetmore (2005: 86 without records) Type in MIN
  100. Caloplaca saxicola (Hoffm.) Nordin - Wetmore (1981: 487), Thomson (1997: 169), Wetmore (2005: 86 without records)
  101. Caloplaca sideritis (Tuck.) Zahlbr. - Wetmore (1981: 487), Willson & Vinyard (1986: 12), Wetmore (2005: 86 without records)
  102. Caloplaca stillicidiorum (Vahl) Lynge -Thomson (1997: 172)
  103. Caloplaca ulmorum (Fink) Fink - Wetmore (1981: 487)
  104. Caloplaca variabilis (Pers.) Müll. Arg. - Wetmore (2005: 84 without records)

  105. Candelaria concolor (Dicks.) Stein - Wetmore (1981: 487), Willson & Vinyard (1986: 12), Wetmore (2005: 86 without records)
  106. Candelaria fibrosa (Fr.) Müll. Arg. - Wetmore (1981: 487), Wetmore (2005: 86 without records)

  107. Candelariella aurella (Hoffm.) Zahlbr. - Thomson (1997: 182), Wetmore (2005: 86 without records)
  108. Candelariella efflorescens R. C. Harris & W. R. Buck - Wetmore (1981: 487), Thomson (1997: 185), Wetmore (2005: 86 without records)
  109. Candelariella subdeflexa (Nyl.) Lettau - Wetmore (2005: 86 without records)
  110. Candelariella vitellina (Hoffm.) Müll. Arg. - Wetmore (1981: 487), Willson & Vinyard (1986: 12), Thomson (1997: 189), Wetmore (2005: 86 without records)
  111. Candelariella xanthostigma (Pers. ex Ach.) Lettau - Wetmore (1981: 487), Thomson (1997: 190), Wetmore (2005: 86 without records)

  112. Canomaculina subtinctoria (Zahlbr.) Elix - Wetmore (2005: 86 without records)

  113. Carbonicola anthracophila (Nyl.) Bendiksby & Timdal - Wetmore (1981: 488 as Lecidea anthracophila)

  114. Catapyrenium lachneum - Wetmore (2005: 86 without records)
  115. Catapyrenium lacinulatum - Wetmore (2005: 86 without records)
  116. Catapyrenium tuckermanii - Wetmore (2005: 86 without records)

  117. Catillaria glauconigrans (Tuck.) Hasse -Thomson (1997: 197)
  118. Catillaria lenticularis (Ach.) Th. Fr. - Wetmore (2005: 86 without records)
  119. Catillaria nigroclavata (Nyl.) J. Steiner - Wetmore (2005: 86 without records)

  120. Catinaria atropurpurea (Schaer.) Vezda & Poelt - Wetmore (1981: 487 as Catillaria atropurpurea), Wetmore (2005: 86 without records)

  121. Cetraria americana M. Satô oder (Spreng.) Hale - Wetmore (2005: 86 as Cetraria americana without records)
  122. Cetraria arenaria Kärnefelt - Wetmore (2005: 86 without records)
  123. Cetraria ericetorum Opiz subsp. ericetorum - Thomson (1984: 79), Wetmore (2005: 86 without records)
  124. Cetraria fendleri - Wetmore (2005: 86 without records)
  125. Cetraria oakesiana - Wetmore (2005: 86 without records)
  126. Cetraria orbata - Wetmore (2005: 86 without records)
  127. Cetraria pinastri - Wetmore (2005: 86 without records)
  128. Cetraria sepincola - Wetmore (2005: 86 without records)

  129. Cetrelia chicitae (W. L. Culb.) W. L. Culb. & C. F. Culb. - Wetmore (1981: 487)
  130. Cetrelia olivetorum (Nyl.) W. L. Culb. & C. F. Culb. - Wetmore (1981: 487), Wetmore (2005: 86 without records)

  131. Chaenotheca brunneola (Ach.) Müll. Arg. - Fink (1910: 50), Wetmore (1981: 487), Wetmore (2005: 86 without records)
  132. Chaenotheca chrysocephala (Turner ex Ach.) Th. Fr. - Fink (1910: 49), Wetmore (1981: 487), Thomson (1997: 205), Wetmore (2005: 86 without records)
  133. Chaenotheca ferruginea (Turn. & Borr.) Mig. - Wetmore (1981: 487), Wetmore (2005: 86 without records)
  134. Chaenotheca furfuracea (L.) Tibell - Wetmore (1981: 488 as Coniocybe furfuracea), Thomson (1997: 210 as Coniocybe furfuracea), Wetmore (2005: 86 without records)
  135. Chaenotheca hispidula (Ach.) Zahlbr. - Wetmore (1981: 487), Wetmore (2005: 86 without records)
  136. Chaenotheca laevigata Nadv. - Wetmore (1981: 487), Wetmore (2005: 86 without records)
  137. Chaenotheca stemonea (Ach.) Müll. Arg. - Fink (1910: 50 as Chaenotheca trichialis stemonea), Wetmore (1981: 487), Wetmore (2005: 86 without records)
  138. Chaenotheca phaeocephala (Turner) Th. Fr. - Fink (1910: 48)
  139. Chaenotheca trichialis (Ach.) Hellb. - Fink (1910: 50), Wetmore (1981: 488), Wetmore (2005: 86 without records)
  140. Chaenotheca xyloxena Nádv. - Wetmore (1981: 488), Wetmore (2005: 86 without records)

  141. Chaenothecopsis consociata (Nádv.) A. F. W. Schmidt - Wetmore (2005: 86 without records)
  142. Chaenothecopsis debilis (Sm.) Tibell - Wetmore (2005: 86 without records)
  143. Chaenothecopsis pusilla (Ach.) A. F. W. Schmidt - Wetmore (2005: 86 without records)
  144. Chaenothecopsis pusiola (Ach.) Vain. - Wetmore (2005: 86 without records)
  145. Chaenothecopsis rubescens Vain. - Wetmore (2005: 86 without records)
  146. Chaenothecopsis savonica (Räsänen) Tibell - Wetmore (2005: 86 without records)
  147. Chaenothecopsis viridireagens (Nádv.) A. F. W. Schmidt - Wetmore (2005: 86 without records)

  148. Chrismofulvea dialyta (Nyl.) Marbach - Wetmore (1981: 487 as Buellia dialyta)

  149. Chrysothrix caesia (Flot.) Ertz & Tehler - Fink (1910: 57 as Arthonia lecideella), Wetmore (1981: 487 as Arthonia caesia), Wetmore (2005: 85 as Arthonia caesia without records)

  150. Chrysothrix candelaris (L.) J. R. Laundon - Wetmore (2005: 86 without records)
  151. Chrysothrix chlorina (Ach.) J. R. Laundon - Wetmore (2005: 86 without records)

  152. Circinaria caesiocinerea (Nyl. ex Malbr.) A. Nordin, Savic & Tibell - Wetmore (1981: 488 as Lecanora caesiocinerea), Thomson (1997: 65 as Aspicilia caesiocinerea), Willson & Vinyard (1986: 11 as Aspicilia caesiocinerea), Wetmore (2005: 85 as Aspicilia contorta without records)

  153. Cladonia acuminata (Ach.) Norrl. - Wetmore (1981: 488), Willson & Vinyard (1986: 12), Wetmore (2005: 86 without records)
  154. Cladonia amaurocraea (Flörke) Schaer. - Wetmore (1981: 488), Thomson (1984: 107), Wetmore (2005: 86 without records)
  155. Cladonia arbuscula (Wallr.) Flot. - Wetmore (2005: 86 without records)
  156. Cladonia apodocarpa Robbins - Anderson (1958: 101)
  157. Cladonia bacillaris (Ach.) Nyl. - Wetmore (1981: 488), Thomson (1984: 111)
  158. Cladonia bacilliformis - Wetmore (2005: 86 without records)
  159. Cladonia borealis - Wetmore (2005: 86 without records)
  160. Cladonia botrytes (K. G. Hagen) Willd. - Wetmore (1981: 488), Thomson (1984: 114), Wetmore (2005: 86 without records)
  161. Cladonia caespiticia (Pers.) Flörke - Wetmore (1981: 488), Wetmore (2005: 86 without records)
  162. Cladonia cariosa (Ach.) Spreng. - Wetmore (1981: 488), Thomson (1984: 116), Wetmore (2005: 86 without records)
  163. Cladonia cenotea (Ach.) Schaer. - Wetmore (1981: 488), Thomson (1984: 118), Wetmore (2005: 86 without records)
  164. Cladonia cervicornis (Ach.) Flot. - Wetmore (2005: 86 without records)
  165. Cladonia chlorophaea ( Flörke ex. Sommerf.) Spreng. - Wetmore (1981: 488), Willson & Vinyard (1986: 12), Thomson (1984: 119), Wetmore (2005: 86 without records)
  166. Cladonia coccifera (L.) Willd. - Wetmore (1981: 488), Thomson (1984: 121), Wetmore (2005: 86 without records)
  167. Cladonia coniocraea (Flörke) Spreng. - Wetmore (1981: 488), Thomson (1984: 122), Wetmore (2005: 86 without records)
  168. Cladonia conista (Nyl.) Robb. - Wetmore (1981: 488), Thomson (1984: 123)
  169. Cladonia cornuta (L.) Hoffm. subsp. cornuta - Wetmore (1981: 488), Thomson (1984: 124), Wetmore (2005: 86 without records)
  170. Cladonia crispata (Ach.) Flot. var. crispata - Wetmore (1981: 488), Thomson (1984: 125), Wetmore (2005: 86 without records)
  171. Cladonia cristatella Tuck. - Wetmore (1981: 488), Wetmore (2005: 86 without records)
  172. Cladonia cryptochlorophaea Asahina - Anderson (1958: 101), Wetmore (1981: 488), Thomson (1984: 126), Wetmore (2005: 86 without records)
  173. Cladonia cyanipes (Fr.) Flörke - Wetmore (1981: 488)
  174. Cladonia cylindrica (Evans) Evans - Wetmore (1981: 488), Wetmore (2005: 86 without records)
  175. Cladonia decorticata (Flörke) Spreng. - Wetmore (1981: 488), Wetmore (2005: 86 without records)
  176. Cladonia deformis (L.) Hoffm. - Wetmore (1981: 488), Thomson (1984: 129), Wetmore (2005: 86 without records)
  177. Cladonia digitata (L.) Hoffm. - Wetmore (1981: 488), Thomson (1984: 131), Wetmore (2005: 86 without records)
  178. Cladonia farinacea - Wetmore (2005: 86 without records)
  179. Cladonia fimbriata (L.) Fr. - Wetmore (1981: 488), Thomson (1984: 133), Wetmore (2005: 86 without records)
  180. Cladonia floerkeana (Fr.) Flörke - Anderson (1958: 101), Wetmore (1981: 488), Thomson (1984: 134), Wetmore (2005: 86 without records)
  181. Cladonia furcata (Huds.) Schrad. - Wetmore (1981: 488), Wetmore (2005: 86 without records)
  182. Cladonia glauca Flörke - Thomson (1984: 135)
  183. Cladonia gracilis (L.) Willd. subsp. gracilis - Wetmore (1981: 488), Wetmore (2005: 86 without records)
  184. Cladonia gracilis (L.) Willd. subsp. turbinata (Ach.) Ahti - Thomson (1984: 136)
  185. Cladonia grayi G. Merr. ex Sandst. - Anderson (1958: 101), Wetmore (1981: 488), Thomson (1984: 139), Wetmore (2005: 86 without records)
  186. Cladonia humilis - Wetmore (2005: 86 without records)
  187. Cladonia macilenta - Wetmore (2005: 86 without records)
  188. Cladonia magyarica - Wetmore (2005: 84 without records)
  189. Cladonia merochlorophaea Asah. - Wetmore (1981: 488), Thomson (1984: 143), Wetmore (2005: 86 without records)
  190. Cladonia mitis Sandst. - Wetmore (1981: 488), Thomson (1984: 148), Wetmore (2005: 86 without records)
  191. Cladonia multiformis G. Merr. - Wetmore (1981: 488), Thomson (1984: 149), Wetmore (2005: 86 without records)
  192. Cladonia norvegica - Wetmore (2005: 84 without records)
  193. Cladonia parasitica (Hoffm.) Hoffm. - Wetmore (1981: 488), Wetmore (2005: 86 without records)
  194. Cladonia peziziformis - Wetmore (2005: 86 without records)
  195. Cladonia phyllophora Ehrh. ex Hoffm. - Wetmore (1981: 488), Thomson (1984: 153), Wetmore (2005: 86 without records)
  196. Cladonia pleurota (Flörke) Schaer. - Wetmore (1981: 488), Thomson (1984: 154), Wetmore (2005: 86 without records)
  197. Cladonia pocillum (Ach.) O. J. Rich. - Thomson (1984: 156)
  198. Cladonia polycarpoides - Wetmore (2005: 87 without records)
  199. Cladonia pyxidata (L.) Hoffm. - Wetmore (1981: 488), Willson & Vinyard (1986: 12), Thomson (1984: 158), Wetmore (2005: 87 without records)
  200. Cladonia ramulosa (With.) J. R. Laundon - Thomson (1984: 109 as Cladonia anomaea), Wetmore (1981: 488 as Cladonia pityrea), Wetmore (2005: 87 without records)
  201. Cladonia rangiferina (L.) F. H. Wigg. - Wetmore (1981: 488), Thomson (1984: 159), Wetmore (2005: 87 without records)
  202. Cladonia rei Schaer. - Wetmore (1981: 488), Wetmore (2005: 87 without records)
  203. Cladonia robbinsii Evans - Wetmore (1981: 488), Wetmore (2005: 87 without records)
  204. Cladonia scabriuscula (Del. ex Duby) Nyl. - Wetmore (1981: 488), Wetmore (2005: 87 without records)
  205. Cladonia squamosa (Scop.) Hoffm. var. squamosa - Wetmore (1981: 488), Thomson (1984: 161)
  206. Cladonia stellaris (Opiz) Pouzar & Vezda - Wetmore (1981: 488), Thomson (1984: 163)
  207. Cladonia stygia Wetmore (2005: 87 without records)
  208. Cladonia subcariosa Nyl. - Willson & Vinyard (1986: 12 as Cladonia polycarpoides)
  209. Cladonia submitis A. Evans - Anderson (1958: 101)
  210. Cladonia subulata (L.) Wigg. - Wetmore (1981: 488), Wetmore (2005: 87 without records)
  211. Cladonia sulphurina (Michx.) Fr. - Wetmore (1981: 488), Wetmore (2005: 87 without records)
  212. Cladonia symphycarpa (Ach.) Fr. - Wetmore (1981: 488), Wetmore (2005: 87 without records)
  213. Cladonia turgida Ehrh. ex Hoffm. - Wetmore (1981: 488), Thomson (1984: 172), Wetmore (2005: 87 without records)
  214. Cladonia uncialis (L.) F. H. Wigg. - Wetmore (1981: 488), Thomson (1984: 173), Wetmore (2005: 87 without records)
  215. Cladonia verticillata (Hoffm.) Schaer. - Wetmore (1981: 488), Thomson (1984: 174)
  216. Cladonia wainioi Savicz - Wetmore (1981: 488 as Cladonia pseudorangiformis), Thomson (1984: 157 as Cladonia pseudorangiformis), Wetmore (2005: 87 without records)

  217. Claussenomyces olivaceus (Fuckel) Sherwood - Wetmore (2005: 87 without records)

  218. Coccocarpia palmicola (Spreng.) Arv. & D. J. Galloway - Wetmore (2005: 87 without records)

  219. Coenogonium luteum (Dicks.) Kalb & Lücking - Wetmore (1981: 488 as Dimerella lutea), Wetmore (2005: 87 without records)
  220. Coenogonium pineti (Schrad. ex Ach.) Lücking & Lumbsch - Wetmore (1981: 488 as Dimerella diluta), Wetmore (2005: 87 without records)

  221. Collema flaccidum (Ach.) Ach. - Wetmore (1981: 488), Thomson (1984: 186), Willson & Vinyard (1986: 12), Wetmore (2005: 87 without records)
  222. Collema furfuraceum (Schaer.) Du Rietz - Thomson (1984: 187)
  223. Collema glebulentum (Nyl. ex Cromb.) Degel. - Wetmore (2005: 87 without records)
  224. Collema nigrescens (Huds.) DC. - Wetmore (1981: 488), Wetmore (2005: 87 without records)
  225. Collema subflaccidum Degel. - Wetmore (1981: 488), Wetmore (2005: 87 without records)
  226. Collema undulatum Laurer ex Flot. - Wetmore (2005: 87 without records)

  227. Cresponea chloroconia (Tuck.) Egea & Torrente - Wetmore (1981: 488 as Lecanactis chloroconia), Wetmore (2005: 87 without records)
  228. Cresponea premnea (Ach.) Egea & Torrente - Fink (1910: 60 as Lecanactis premnea)

  229. Cyphelium lucidum (Th. Fr.) Th. Fr. - Fink (1910: 50 as Acolium lucidum), Wetmore (1981: 488), Wetmore (2005: 87 without records)
  230. Cyphelium tigillare (Ach.) Ach. - Fink (1910: 50 as Acolium tigillare), Wetmore (1981: 488), Thomson (1997: 214), Wetmore (2005: 87 without records)

  231. Dendriscocaulon intricatulum (Nyl.) Henssen - Wetmore (2005: 87 without records)
  232. Dermatocarpon americanum Vain. - Heidmarsson (2003: 466), Wetmore (2005: 87 without records)
  233. Dermatocarpon luridum (With.) J. R. Laundon - Wetmore (1981: 488 as Dermatocarpon weberi), Thomson (1984: 213 as Dermatocarpon fluviatile), Willson & Vinyard (1986: 12 as Dermatocarpon fluviatile), Wetmore (2005: 87 without records)
  234. Dermatocarpon meiophyllizum Vain. - Glavich & Geiser (2004: 139), Wetmore (2005: 87 without records)
  235. Dermatocarpon miniatum (L.) W. Mann - Wetmore (1981: 488), Thomson (1984: 219), Willson & Vinyard (1986: 12), Wetmore (2005: 87 without records)
  236. Dermatocarpon moulinsii (Mont.) Zahlbr. - Wetmore (2005: 87 without records)

  237. Dimelaena oreina (Ach.) Norman - Wetmore (1981: 490 as Rinodina oreina), Willson & Vinyard (1986: 12), Thomson (1997: 216), Wetmore (2005: 87 without records)

  238. Diploschistes actinostomus (Ach.) Zahlbr. - Wetmore (2005: 87 without records)
  239. Diploschistes muscorum (Scop.) R. Sant. subsp. muscorum - Thomson (1997: 218), Wetmore (2005: 87 without records)
  240. Diploschistes scruposus (Schreb.) Norman - Wetmore (1981: 488), Willson & Vinyard (1986: 12), Thomson (1997: 218), Wetmore (2005: 87 without records)
  241. Diplotomma venustum (Körb.) Körb. - Wetmore (2005: 85 as Buellia venusta without records)

  242. Diplotomma alboatrum (Hoffm.) Flot. - Wetmore (1981: 487 as Buellia alboatra), Thomson (1997: 127 as Buellia alboatra), Wetmore (2005: 85 as Buellia alboatra without records)

  243. Enchylium bachmanianum (Fink) Otálora, P. M. Jørg. & Wedin - Wetmore (2005: 87 as Collema bachmanianum without records)
  244. Enchylium coccophorum (Tuck.) Otálora, P. M. Jørg. & Wedin - Wetmore (2005: 87 as Collema coccophorum without records)
  245. Enchylium conglomeratum (Hoffm.) Otálora, P. M. Jørg. & Wedin - Wetmore (1981: 488 as Collema conglomeratum), Wetmore (2005: 87 as Collema conglomeratum without records)
  246. Enchylium limosum (Ach.) Otálora, P. M. Jørg. & Wedin - Wetmore (2005: 87 as Collema limosum without records)
  247. Enchylium polycarpon (Hoffm.) Otálora, P. M. Jørg. & Wedin - Wetmore (2005: 87 as Collema polycarpon without records)
  248. Enchylium tenax (Sw.) Gray - Wetmore (2005: 87 as Collema tenax without records)

  249. Endocarpon diffractellum (Nyl.) Gueidan & Cl. Roux - Wetmore (2005: 91 as Staurothele diffractella without records)
  250. Endocarpon pusillum Hedw. - Willson & Vinyard (1986: 12), Wetmore (2005: 87 without records)

  251. Eopyrenula intermedia Coppins - Wetmore (2005: 87 without records)

  252. Ephebe lanata (L.) Vain. - Wetmore (1981: 488), Wetmore (2005: 87 without records)
  253. Ephebe ocellata Henssen - Wetmore (1981: 488), Wetmore (2005: 87 without records)

  254. Evernia mesomorpha Nyl. - Wetmore (1981: 488), Thomson (1984: 229), Wetmore (2005: 87 without records)

  255. Flavoparmelia baltimorensis (Gyeln. & Fóriss) Hale - Wetmore (1981: 489 as Parmelia baltimorensis), Willson & Vinyard (1986: 12 as Pseudoparmelia baltimorensis), Wetmore (2005: 87 without records)
  256. Flavoparmelia caperata (L.) Hale - Wetmore (1981: 489 as Parmelia caperata), Willson & Vinyard (1986: 12 as Pseudoparmelia caperata), Wetmore (2005: 87 without records)

  257. Flavoplaca citrina (Hoffm.) Arup, Frödén & Søchting - Wetmore (1981: 487 as Caloplaca citrina), Thomson (1997: 155 as Caloplaca citrina), Wetmore (2005: 85 as Caloplaca citrina without records)

  258. Flavopunctelia flaventior (Stirt.) Hale - Wetmore (1981: 489 as Parmelia flaventior), Wetmore (2005: 87 without records)
  259. Flavopunctelia soredica (Nyl.) Hale - Wetmore (1981: 489 as Parmelia soredica), Wetmore (2005: 87 without records)

  260. Fuscidea arboricola Coppins & Tønsberg - Wetmore (2005: 84 without records)

  261. Fuscopannaria ahlneri (P. M. Jørg.) P. M. Jørg. - Wetmore (2005: 87 without records)
  262. Fuscopannaria leucosticta (Tuck.) P. M. Jørg. - Wetmore (1981: 489 as Pannaria leucosticta), Wetmore (2005: 87 without records)
  263. Fuscopannaria praetermissa (Nyl.) P. M. Jørg. - Wetmore (1981: 489 as Pannaria praetermissa), Thomson (1984: 320 as Parmeliella praetermissa), Wetmore (2005: 87 without records)

  264. Graphis scripta (L.) Ach. - Fink (1910: 54), Wetmore (1981: 488), Wetmore (2005: 87 without records)

  265. Gyalecta fagicola (Hepp ex Arnold) Zwackh - Wetmore (1981: 489 as Pachyphiale fagicola), Wetmore (2005: 89 as Pachyphiale fagicola without records)
  266. Gyalecta jenensis (Batsch) Zahlbr. - Thomson (1997: 241), Wetmore (2005: 87 without records)
  267. Gyalecta truncigena (Ach.) Hepp - Wetmore (1981: 488), Wetmore (2005: 87 without records)

  268. Gyalolechia flavorubescens (Huds.) Søchting, Frödén & Arup - Wetmore (2005: 85 as Caloplaca flavorubescens without records)
  269. Gyalolechia flavovirescens (Wulfen) Søchting, Frödén & Arup - Wetmore (1981: 487 as Caloplaca flavovirescens), Thomson (1997: 161 as Caloplaca flavovirescens), Wetmore (2005: 86 as Caloplaca flavovirescens without records)
  270. Gyalolechia xanthostigmoidea (Räsänen) Søchting, Frödén & Arup - Thomson (1997: 158 as Caloplaca discolor)

  271. Henrica theleodes (Sommerf.) Savic, Tibell & Nav.-Ros. - Wetmore (2005: 90 as Polyblastia theleodes without records)

  272. Heppia lutosa (Ach.) Nyl. - Thomson (1997: 244), Wetmore (2005: 87 without records)

  273. Heterodermia galactophylla (Tuck.) W. L. Culb. - Wetmore (2005: 87 without records)
  274. Heterodermia obscurata (Nyl.) Trevis. - Wetmore (2005: 87 without records)
  275. Heterodermia speciosa (Wulfen) Trevis. - Wetmore (1981: 488), Wetmore (2005: 87 without records)

  276. Huneckia pollinii (A. Massal.) S. Y. Kondr., Kärnefelt, Elix, A. Thell, Jung Kim, A. S. Kondr. & Hur - Wetmore (1981: 487 as Caloplaca pollinii), Wetmore (2005: 86 as Caloplaca pollinii without records)

  277. Hyperphyscia adglutinata (Flörke) H. Mayrhofer & Poelt - Wetmore (2005: 87 without records)
  278. Hyperphyscia syncolla (Tuck. ex Nyl.) Kalb - Willson & Vinyard (1986: 12 as Physciopsis syncolla), Wetmore (2005: 87 without records)

  279. Hypocenomyce anthracophila - Wetmore (2005: 87 without records)
  280. Hypocenomyce friesii - Wetmore (2005: 87 without records)
  281. Hypocenomyce scalaris (Ach. ex Lilj.) M. Choisy - Wetmore (1981: 489 as Lecidea scalaris), Thomson (1997: 248), Wetmore (2005: 87 without records)

  282. Hypogymnia bitteri - Wetmore (2005: 87 without records)
  283. Hypogymnia physodes (L.) Nyl. - Wetmore (1981: 488), Thomson (1984: 241), Wetmore (2005: 87 without records)
  284. Hypogymnia tubulosa - Wetmore (2005: 87 without records)

  285. Hypotrachyna revoluta (Flörke) Hale - Wetmore (1981: 489 as Parmelia revoluta), Wetmore (2005: 87 without records)

  286. Icmadophila ericetorum (L.) Zahlbr. - Wetmore (1981: 488), Thomson (1997: 249), Wetmore (2005: 87 without records)

  287. Imshaugia aleurites (Ach.) S. F. Meyer - Wetmore (1981: 489 as Parmeliopsis aleurites), Thomson (1984: 321 as Parmeliopsis aleurites), Wetmore (2005: 87 without records)
  288. Imshaugia placorodia (Ach.) S. F. Meyer - Wetmore (1981: 489 as Parmeliopsis placorodia), Wetmore (2005: 87 without records)

  289. Ionaspis alba - Wetmore (2005: 84 without records)
  290. Ionaspis lacustris (With.) Lutzoni - Wetmore (1981: 488 as Lecanora lacustris), Thomson (1997: 245 as Hymenelia lacustris), Wetmore (2005: 87 without records)

  291. Japewia tornoensis - Wetmore (2005: 87 without records)

  292. Julella sericea - Wetmore (2005: 87 without records)

  293. Kirschsteiniothelia aethiops - Wetmore (2005: 87 without records)

  294. Lasallia papulosa (Ach.) Llano - Wetmore (1981: 488), Thomson (1984: 245), Wetmore (2005: 87 without records)

  295. Lathagrium fuscovirens (With.) Otálora, P. M. Jørg. & Wedin - Wetmore (1981: 488 as Collema tuniforme), Thomson (1984: 192 as Collema tuniforme), Wetmore (2005: 87 as Collema fuscovirens without records)

  296. Lecania cyrtella - Wetmore (2005: 84 without records)
  297. Lecania dubitans (Nyl.) A. L. Sm. - Wetmore (1981: 488 as Lecania dimera), Wetmore (2005: 87 without records)
  298. Lecania erysibe - Wetmore (2005: 87 without records)
  299. Lecania naegelii - Wetmore (2005: 87 without records)
  300. Lecania nylanderiana - Wetmore (2005: 87 without records)
  301. Lecanora albella (Pers.) Ach. var. rubescens (Imshaug & Brodo) Lumbsch - Wetmore (1981: 488 as Lecanora pallida var. rubescens), Wetmore (2005: 87 without records)
  302. Lecanora albellula Nyl. - Wetmore (1981: 488 as Lecanora piniperda), Thomson (1997: 299 as Lecanora piniperda)
  303. Lecanora allophana (Ach.) Nyl. - Wetmore (1981: 488), Thomson (1997: 266), Wetmore (2005: 87 without records)
  304. Lecanora argentata - Wetmore (2005: 87 without records)
  305. Lecanora argentea Brodo - Thomson (1997: 281 as Lecanora fuliginosa), Wetmore (2005: 88 without records)
  306. Lecanora argopholis (Ach.) Ach. - Wetmore (1981: 488 as Lecanora frustulosa), Thomson (1997: 267), Wetmore (2005: 88 without records)
  307. Lecanora caesiorubella - Wetmore (2005: 88 without records)
  308. Lecanora caesiorubella Ach. var. saximontana Imsh. & Brodo - Wetmore (1981: 488)
  309. Lecanora carpinea (L.) Vain. - Wetmore (2005: 88 without records)
  310. Lecanora cateilea (Ach.) A. Massal. - Wetmore (2005: 88 without records)
  311. Lecanora cenisia Ach. - Wetmore (1981: 488), Thomson (1997: 272), Wetmore (2005: 88 without records)
  312. Lecanora circumborealis Brodo & Vitik. - Thomson (1997: 274), Wetmore (2005: 88 without records)
  313. Lecanora epanora (Ach.) Ach. - Wetmore (2005: 84 without records)
  314. Lecanora expallens - Wetmore (2005: 84 without records)
  315. Lecanora flotoviana - Wetmore (2005: 84 without records)
  316. Lecanora fugiens - Wetmore (2005: 84 without records)
  317. Lecanora galactinula - Wetmore (2005: 88 without records)
  318. Lecanora hagenii (Ach.) Ach. - Thomson (1997:286), Wetmore (2005: 88 without records)
  319. Lecanora hybocarpa - Wetmore (2005: 88 without records)
  320. Lecanora impudens Degel. - Wetmore (1981: 488), Thomson (1997: 287), Wetmore (2005: 88 without records)
  321. Lecanora intricata (Ach.) Ach. - Wetmore (2005: 88 without records)
  322. Lecanora meridionalis H. Magn. - Wetmore (1981: 488), Wetmore (2005: 88 without records)
  323. Lecanora minutella - Wetmore (2005: 84 without records)
  324. Lecanora muralis (Schreb.) Rabenh. var. muralis - Wetmore (1981: 488), Willson & Vinyard (1986: 12), Thomson (1997: 295), Wetmore (2005: 88 without records)
  325. Lecanora intricata (Ach.) Ach. - Wetmore (1981: 488 as Lecanora mutabilis)
  326. Lecanora opiniconensis - Wetmore (2005: 88 without records)
  327. Lecanora perplexa Brodo - Thomson (1997: 298)
  328. Lecanora piniperda - Wetmore (2005: 88 without records)
  329. Lecanora polytropa (Ehrh. in Hoffm.) Rabenh. - Wetmore (1981: 488), Thomson (1997: 299), Wetmore (2005: 88 without records)
  330. Lecanora pseudistera - Wetmore (2005: 88 without records)
  331. Lecanora pulicaris (Pers.) Ach. - Wetmore (1981: 488 as Lecanora coilocarpa), Wetmore (1981: 488), Thomson (1997: 301), Wetmore (2005: 88 without records)
  332. Lecanora chlarotera Nyl. - Wetmore (1981: 488 as Lecanora rugosella), Thomson (1997: 301 as Lecanora rugosella), Wetmore (2005: 88 as Lecanora rugosella without records)
  333. Lecanora rupicola (L.) Zahlbr. - Thomson (1997: 303), Wetmore (2005: 88 without records)
  334. Lecanora saligna (Schrad.) Zahlbr. - Wetmore (1981: 488), Wetmore (2005: 88 without records)
  335. Lecanora strobilina (Spreng.) Kieff. - Wetmore (1981: 488), Wetmore (2005: 88 without records)
  336. Lecanora subrugosa Nyl. - Thomson (1997: 308)
  337. Lecanora symmicta (Ach.) Ach. - Wetmore (1981: 488 as Lecanora symmictera), Thomson (1997: 309), Wetmore (2005: 88 without records)
  338. Lecanora thysanophora R. C. Harris - Wetmore (2005: 88 without records)
  339. Lecanora valesiaca (Müll. Arg.) Stizenb. - Wetmore (2005: 88 without records)
  340. Lecanora varia (Hoffm.) Ach. - Wetmore (1981: 488), Thomson (1997: 311), Wetmore (2005: 88 without records)
  341. Lecanora wisconsinensis H. Magn. - Wetmore (1981: 488), Wetmore (2005: 88 without records)

  342. Lecidea albofuscescens Nyl. - Wetmore (2005: 88 without records)
  343. Lecidea albohyalina (Nyl.) Th. Fr. - Wetmore (1981: 488), Thomson (1997: 325), Wetmore (2005: 85 as Biatora albohyalina without records)
  344. Lecidea atrobrunnea (DC.) Schaer. - Wetmore (2005: 88 without records)
  345. Lecidea auriculata Th. Fr. - Wetmore (2005: 88 without records)
  346. Lecidea berengeriana (A. Massal.) Nyl. - Wetmore (1981: 488 as Lecidea berengeriana), Thomson (1997: 331 as Lecidea berengeriana), Wetmore (2005: 89 as Mycobilimbia berengeriana without records)
  347. Lecidea betulicola (Kullh.) H. Magn. - Wetmore (2005: 84 without records)
  348. Lecidea carnulenta (Tuck.) Fink - Wetmore (2005: 88 without records)
  349. Lecidea delincta Nyl. - Wetmore (2005: 88 without records)
  350. Lecidea erythrophaea Flörke ex Sommerf. - Wetmore (1981: 489), Wetmore (2005: 88 without records)
  351. Lecidea fuliginosa Taylor - Wetmore (2005: 84 without records)
  352. Lecidea lithophila (Ach.) Ach. - Thomson (1997: 361)
  353. Lecidea nylanderi (Anzi) Th. Fr. - Wetmore (1981: 489), Thomson (1997: 365), Wetmore (2005: 88 without records)
  354. Lecidea plana (J. Lahm. in Körb.) Nyl. - Wetmore (1981: 489), Thomson (1997: 372), Wetmore (2005: 88 without records)
  355. Lecidea plebeja Nyl. - Wetmore (2005: 88 without records)
  356. Lecidea tessellata Flörke - Thomson (1997: 384), Wetmore (2005: 88 without records)
  357. Lecidea turgidula Fr. - Wetmore (1981: 489), Thomson (1997: 388), Wetmore (2005: 85 as Biatora turgidula without records)

  358. Lecidella carpathica Körb. - Wetmore (1981: 489), Thomson (1997: 395), Wetmore (2005: 88 without records)
  359. Lecidella effugiens (Nilson) Knoph & Hertel - Wetmore (2005: 88 without records)
  360. Lecidella elaeochroma (Ach.) Hazsl. - Wetmore (1981: 489), Wetmore (2005: 88 without records)
  361. Lecidella euphorea (Flörke) Hertel - Wetmore (1981: 489 as Lecidella glomerulosa), Thomson (1997: 398), Wetmore (2005: 88 without records)
  362. Lecidella patavina (A. Massal.) Knoph & Leuckert - Wetmore (2005: 88 without records)
  363. Lecidella stigmatea (Ach.) Hertel & Leuckert - Wetmore (1981: 489), Willson & Vinyard (1986: 12), Thomson (1997: 402), Wetmore (2005: 88 without records)

  364. Leimonis erratica (Körb.) R. C. Harris & Lendemer - Wetmore (1981: 489 as Lecidea erratica), Wetmore (2005: 89 as Micarea erratica without records)

  365. Lepra amara (Ach.) Hafellner - Wetmore (1981: 489 as Pertusaria amara), Wetmore (2005: 89 as Pertusaria amara without records)
  366. Lepra pustulata (Brodo & W. L. Culb.) Lendemer & R. C. Harris - Wetmore (2005: 88 as Loxospora pustulata without records)

  367. Lepraria caesioalba (B. de Lesd.) J. R. Laundon - Wetmore (2005: 88 without records)
  368. Lepraria lobificans Nyl. - Wetmore (2005: 88 without records)
  369. Lepraria neglecta (Nyl.) Lettau - Wetmore (1981: 489), Wetmore (1981: 489 as Lepraria zonata), Wetmore (2005: 88 without records)

  370. Leproplaca cirrochroa - Wetmore (2005: 85 as Caloplaca cirrochroa without records)

  371. Leptogium apalachense (Tuck.) Nyl. - Wetmore (2005: 88 without records)
  372. Leptogium arsenei Sierk - Wetmore (1981: 489), Wetmore (2005: 88 without records)
  373. Leptogium burnetiae C. W. Dodge - Wetmore (1981: 489)
  374. Leptogium byssinum - Wetmore (2005: 88 without records)
  375. Leptogium corticola - Wetmore (2005: 88 without records)
  376. Leptogium cyanescens (Ach.) Körb. - Wetmore (1981: 489), Wetmore (2005: 88 without records)
  377. Leptogium dactylinum - Wetmore (2005: 88 without records)
  378. Leptogium hirsutum - Wetmore (2005: 88 without records)
  379. Leptogium lichenoides - Wetmore (2005: 88 without records)
  380. Leptogium milligranum Sierk - Wetmore (1981: 489), Wetmore (2005: 88 without records)
  381. Leptogium pulchellum (Ach.) Nyl. - Wetmore (1981: 488 as Collema pulchellum), Wetmore (2005: 87 as Collema pulchellum without records)
  382. Leptogium saturninum (Dicks.) Nyl. - Wetmore (1981: 489), Thomson (1984: 262), Wetmore (2005: 88 without records)
  383. Leptogium tenuissimum - Wetmore (2005: 88 without records)
  384. Leptogium teretiusculum - Wetmore (2005: 88 without records)

  385. Leptorhaphis contorta - Wetmore (2005: 88 without records)
  386. Leptorhaphis epidermidis - Wetmore (2005: 88 without records)

  387. Lichenothelia scopularia (Nyl.) D. Hawksw. - Wetmore (2005: 88 without records)

  388. Lichinella cribellifera (Nyl.) P. P. Moreno & Egea - Wetmore (2005: 88 without records)
  389. Lichinella minnesotensis (Fink) Essl. - Fink (1910: 145 as Omphalaria minnesotensis Protologue), Zahlbruckner (1924: 806 as Thyrea minnesotensis), Fink (1935: 149 as Forssellia minnesotensis), Henssen & Jørgensen (1990: 141 as Gonohymenium minnesotensis), Wetmore (2005: 88 without records) Type in MICH
  390. Lichinella nigritella (Lettau) P. P. Moreno & Egea - Wetmore (2005: 88 without records)

  391. Lithothelium hyalosporum (Nyl.) Aptroot - Wetmore (2005: 84 without records)
  392. Lithothelium phaeosporum (R. C. Harris) Aptroot - Wetmore (2005: 88 without records)

  393. Lobaria pulmonaria (L.) Hoffm. - Wetmore (1981: 489), Wetmore (2005: 88 without records)
  394. Lobaria quercizans Michx. - Wetmore (1981: 489), Wetmore (2005: 88 without records)
  395. Lobaria scrobiculata (Scop.) DC. - Thomson (1984: 271), Wetmore (2005: 88 without records)

  396. Lobothallia alphoplaca (Wahlenb.) Hafellner - Wetmore (2005: 88 without records)

  397. Lopadium pezizoideum (Ach.) Körb. - Thomson (1997: 411), Wetmore (2005: 88 without records)

  398. Loxospora elatina (Ach.) A. Massal. - Wetmore (1981: 488 as Haematomma elatinum), Wetmore (2005: 88 without records)

  399. Megalospora porphyritis (Tuck.) R. C. Harris - Wetmore (2005: 88 without records)

  400. Megaspora verrucosa (Ach.) Hafellner & V. Wirth - Wetmore (1981: 489 as Pachyospora verrucosa), Thomson (1997: 443 as Pachyospora verrucosa), Wetmore (2005: 88 without records)

  401. Melanelia hepatizon (Ach.) A. Thell - Wetmore (2005: 88 as Melanelia hepatizon without records)

  402. Melanelixia albertana (Ahti) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Wetmore (1981: 489 as Parmelia albertana), Wetmore (2005: 88 as Melanelia albertana without records)
  403. Melanelia fuliginosa (Fr. ex Duby) Essl. - Wetmore (2005: 88 as Melanelia fuliginosa without records)
  404. Melanelixia glabratula (Lamy) O. Blanco et al. - Wetmore (1981: 489 as Parmelia glabratula), Thomson (1984: 303 as Parmelia glabratula)
  405. Melanelixia subargentifera (Nyl.) O. Blanco et al. - Wetmore (1981: 489 as Parmelia subargentifera), Wetmore (2005: 88 without records)
  406. Melanelixia subaurifera (Nyl.) O. Blanco et al. - Wetmore (1981: 489 as Parmelia subaurifera), Thomson (1984: 316 as Parmelia subaurifera), Wetmore (2005: 88 without records)

  407. Melanohalea exasperata (De Not.) O. Blanco et al. - Wetmore (1981: 489 as Parmelia exasperata), Wetmore (2005: 88 as Melanelia exasperata without records)
  408. Melanohalea exasperatula (Nyl.) O. Blanco et al. - Wetmore (1981: 489 as Parmelia exasperatula), Thomson (1984: 300 as Parmelia exasperatula), Wetmore (2005: 88as Melanelia exasperatula without records)
  409. Melanohalea infumata (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Wetmore (1981: 489 as Parmelia infumata), Wetmore (2005: 88 as Melanelia infumata without records)
  410. Melanohalea olivacea (L.) O. Blanco et al. - Wetmore (1981: 489 as Parmelia olivacea), Thomson (1984: 306 as Parmelia olivacea), Wetmore (2005: 88 as Melanelia olivacea without records)
  411. Melanohalea septentrionalis (Lynge) O. Blanco et al. - Wetmore (1981: 489 as Parmelia septentrionalis), Thomson (1984: 311 as Parmelia septentrionalis), Wetmore (2005: 88 as Melanelia septentrionalis without records)
  412. Melanohalea subolivacea (Nyl. in Hasse) O. Blanco et al. - Wetmore (1981: 489 as Parmelia subolivacea), Wetmore (2005: 88 as Melanelia subolivacea without records)
  413. Melanohalea trabeculata (Ahti) O. Blanco et al. - Wetmore (1981: 489 as Parmelia trabeculata), Wetmore (2005: 89 as Melanelia trabeculata without records)

  414. Melaspilea arthonioides (Fée) Nyl. - Fink (1910: 60), Wetmore (2005: 89 without records)

  415. Menegazzia terebrata (Hoffm.) A. Massal. - Wetmore (2005: 89 without records)
  416. Micarea denigrata (Fr.) Hedl. - Wetmore (1981: 489), Wetmore (2005: 89 without records)
  417. Micarea melaena (Nyl.) Hedl. - Wetmore (1981: 489), Thomson (1997: 419), Wetmore (2005: 89 without records)
  418. Micarea misella (Nyl.) Hedl. - Wetmore (2005: 88 without records)
  419. Micarea peliocarpa (Anzi) Coppins & R. Sant. - Wetmore (2005: 89 without records)
  420. Micarea prasina (Fr.) Körb. - Wetmore (1981: 489), Wetmore (2005: 89 without records)

  421. Microcalicium arenarium (Hampe ex A. Massal.) Tibell - Wetmore (2005: 89 without records)

  422. Montanelia disjuncta (Erichsen) Divakar, A. Crespo, Wedin & Essl. - Wetmore (1981: 489 as Parmelia disjuncta), Thomson (1984: 299 as Parmelia disjuncta), Wetmore (2005: 88 as Melanelia disjuncta without records)
  423. Montanelia sorediata (Ach.) Divakar, A. Crespo, Wedin & Essl. - Thomson (1984: 312 as Parmelia sorediosa), Wetmore (2005: 88 as Melanelia sorediata without records)
  424. Montanelia tominii (Oxner) Divakar, A. Crespo, Wedin & Essl. - Wetmore (1981: 489 as Parmelia substygia), Willson & Vinyard (1986: 12 as Parmelia substygia), Thomson (1984: 317 as Parmelia substygia), Wetmore (2005: 88 as Melanelia tominii without records)

  425. Mycobilimbia carneoalbida (Müll. Arg.) S. Ekman & Printzen - Wetmore (2005: 84 without records)
  426. Mycobilimbia epixanthoides (Nyl.) Lettau - Wetmore (1981: 487 as Bacidia epixanthoides), Thomson (1997: 101 as Bacidia epixanthoides), Wetmore (2005: 84 without records)
  427. Mycobilimbia pilularis (Körb.) Hafellner & Türk - Wetmore (1981: 487 as Bacidia sphaeroides), Thomson (1997: 110 as Bacidia sphaeroides), Wetmore (2005: 89 without records)
  428. Mycobilimbia tetramera - Wetmore (2005: 89 without records)

  429. Mycoblastus affinis (Schaer.) T. Schauer - Wetmore (2005: 89 without records)
  430. Mycoblastus sanguinarius (L.) Norman - Wetmore (1981: 489), Thomson (1997: 426), Wetmore (2005: 89 without records)

  431. Mycocalicium subtile (Pers.) Szatala - Wetmore (2005: 89 without records)

  432. Mycomicrothelia wallrothii (Hepp) D. Hawksw. - Wetmore (2005: 89 without records)

  433. Mycoglaena quercicola R. C. Harris - Wetmore (2005: 84 without records)

  434. Myelochroa aurulenta (Tuck.) Elix & Hale - Wetmore (1981: 489 as Parmelia aurulenta), Wetmore (2005: 89 without records)
  435. Myelochroa galbina (Ach.) Elix & Hale - Wetmore (1981: 489 as Parmelia galbina), Willson & Vinyard (1986: 12 as Parmelina galbina), Wetmore (2005: 89 without records)
  436. Myelochroa obsessa (Ach.) Elix & Hale - Wetmore (1981: 489 as Parmelia obsessa), Wetmore (2005: 89 without records)

  437. Myriolecis crenulata (Ach.) Sliwa, Zhao Xin & Lumbsch - Wetmore (2005: 88 as Lecanora crenulata without records)
  438. Myriolecis dispersa (Pers.) Sliwa, Zhao Xin & Lumbsch - Thomson (1997: 278 as Lecanora dispersa), Wetmore (2005: 88 as Lecanora dispersa without records)
  439. Myriolecis invadens (H. Magn.) Sliwa, Zhao Xin & Lumbsch - Wetmore (2005: 84 as Lecanora invadens without records)
  440. Myriolecis sambuci (Pers.) Clem. - Wetmore (2005: 88 as Lecanora sambuci without records)
  441. Myriolecis torrida (Vain.) Sliwa, Zhao Xin & Lumbsch - Wetmore (2005: 84 as Lecanora torrida without records)

  442. Myriospora smaragdula (Wahlenb. ex Ach.) K. Knudsen & B. Abbott - Thomson (1997: 34 as Acarospora smaragdula)

  443. Naetrocymbe punctiformis (Schrank) R. C. Harris - Wetmore (1981: 487 as Arthopyrenia padi)

  444. Nephroma bellum (Spreng.) Tuck. - Wetmore (1981: 489), Thomson (1984: 278), Wetmore (2005: 89 without records)
  445. Nephroma helveticum (Ach.) var. helveticum - Wetmore (1981: 489), Thomson (1984: 280), Wetmore (2005: 89 without records)
  446. Nephroma parile (Ach.) Ach. - Wetmore (1981: 489), Thomson (1984: 282), Wetmore (2005: 89 without records)
  447. Nephroma resupinatum (L.) Ach. - Wetmore (1981: 489), Thomson (1984: 283), Wetmore (2005: 89 without records)

  448. Normandina pulchella (Borrer) Nyl. - Wetmore (1981: 489), Wetmore (2005: 89 without records)

  449. Ochrolechia androgyna (Hoffm.) Arnold - Thomson (1997: 430), Wetmore (2005: 89 without records)
  450. Ochrolechia arborea (Ljubitz) Almb. - Wetmore (1981: 489), Wetmore (2005: 89 without records)
  451. Ochrolechia mexicana - Wetmore (2005: 89 without records)
  452. Ochrolechia pseudopallescens - Wetmore (2005: 89 without records)
  453. Ochrolechia trochophora (Tuck.) Vers. - Wetmore (1981: 489 as Ochrolechia rosella), Wetmore (2005: 89 without records)

  454. Opegrapha anomea Nyl. - Wetmore (2005: 84 without records)

  455. Pannaria conoplea (Ach.) Bory - Wetmore (1981: 489), Wetmore (2005: 89 without records)

  456. Pannaria tavaresii P. M. Jørg.- Wetmore (2005: 89 without records)

  457. Parmelia fraudans (Nyl.) Nyl. - Wetmore (1981: 489), Wetmore (2005: 89 without records)
  458. Parmelia omphalodes (L.) Ach. - Wetmore (2005: 89 without records)
  459. Parmelia saxatilis (L.) Ach. - Thomson (1984: 310), Wetmore (2005: 89 without records)
  460. Parmelia squarrosa Hale - Wetmore (1981: 489), Thomson (1984: 313), Wetmore (2005: 89 without records)
  461. Parmelia sulcata Taylor - Wetmore (1981: 489), Thomson (1984: 318), Wetmore (2005: 89 without records)

  462. Parmeliella triptophylla (Ach.) Müll. Arg. - Wetmore (2005: 89 without records)

  463. Parmeliopsis ambigua (Wulfen) Nyl. - Wetmore (1981: 489), Thomson (1984: 325), Wetmore (2005: 89 without records)
  464. Parmeliopsis hyperopta (Ach.) Arnold - Wetmore (1981: 489), Thomson (1984: 326), Wetmore (2005: 89 without records)

  465. Parmotrema arnoldii (Du Rietz) Hale - Wetmore (2005: 89 without records)
  466. Parmotrema cetratum (Ach.) Hale - Wetmore (2005: 91 as Rimelia cetrata without records)
  467. Parmotrema crinitum (Ach.) M. Choisy - Wetmore (1981: 489 as Parmelia crinita), Wetmore (2005: 89 without records)
  468. Parmotrema margaritatum (Hue) Hale - Wetmore (2005: 89 without records)
  469. Parmotrema reticulatum (Taylor) M. Choisy - Wetmore (2005: 91 as Rimelia reticulata without records)
  470. Parmotrema stuppeum (Taylor) Hale - Wetmore (2005: 89 without records)

  471. Peltigera aphthosa (L.) Willd. - Wetmore (1981: 489), Thomson (1984: 329), Wetmore (2005: 89 without records)
  472. Peltigera canina (L.) Willd. - Wetmore (1981: 489), Willson & Vinyard (1986: 12), Wetmore (2005: 89 without records)
  473. Peltigera collina (Ach.) Schrad. - Wetmore (2005: 89 without records)
  474. Peltigera didactyla (With.) J. R. Laundon - Wetmore (1981: 489 as Peltigera canina var. spuria), Thomson (1984: 332 as Peltigera canina f. sorediata), Willson & Vinyard (1986: 12 as Peltigera spuria), Wetmore (2005: 89 without records)
  475. Peltigera elisabethae Gyeln. - Wetmore (1981: 489), Wetmore (2005: 89 without records)
  476. Peltigera evansiana Gyeln. - Wetmore (1981: 489), Wetmore (2005: 89 without records)
  477. Peltigera horizontalis (Huds.) Baumg. - Wetmore (1981: 489), Thomson (1984: 337), Wetmore (2005: 89 without records)
  478. Peltigera lepidophora (Nyl.) Vain. - Wetmore (1981: 489), Thomson (1984: 338), Wetmore (2005: 89 without records)
  479. Peltigera leucophlebia (Nyl.) Gyeln. - Wetmore (1981: 489), Thomson (1984: 330 as Peltigera aphthosa var. leucophlebia), Wetmore (2005: 89 without records)
  480. Peltigera malacea (Ach.) Funck - Wetmore (1981: 489), Thomson (1984: 339), Wetmore (2005: 89 without records)
  481. Peltigera membranacea (Ach.) Nyl. - Thomson (1984: 340), Wetmore (2005: 89 without records)
  482. Peltigera neckeri Müll. Arg. - Wetmore (1981: 489), Wetmore (2005: 89 without records)
  483. Peltigera polydactylon (Neck.) Hoffm. - Wetmore (1981: 489), Thomson (1984: 343), Willson & Vinyard (1986: 12), Wetmore (2005: 89 without records)
  484. Peltigera praetextata (Flörke ex Sommerf.) Zopf - Wetmore (1981: 489 as Peltigera canina var. praetextata), Wetmore (2005: 89 without records)
  485. Peltigera rufescens (Weiss) Humb. - Wetmore (1981: 489 as Peltigera canina var. rufescens), Thomson (1984: 333 as Peltigera canina var. rufescens), Wetmore (2005: 89 without records)
  486. Peltigera scabrosa Th. Fr. - Wetmore (1981: 489), Wetmore (2005: 89 without records)
  487. Peltigera venosa (L.) Baumg. - Thomson (1984: 345), Wetmore (2005: 89 without records)

  488. Peltula bolanderi (Tuck.) Wetmore - Wetmore (2005: 89 without records)
  489. Peltula euploca (Ach.) Poelt ex Pišút - Wetmore (2005: 89 without records)
  490. Peltula patellata (Bagl.) Swinscow & Krog - Wetmore (2005: 89 without records)

  491. Pertusaria alpina Hepp ex Ahles - Wetmore (1981: 489), Thomson (1997: 447), Wetmore (2005: 89 without records)
  492. Pertusaria consocians Dibben - Wetmore (1981: 489), Wetmore (2005: 89 without records)
  493. Pertusaria globularis (Ach.) Tuck. - Wetmore (2005: 89 without records)
  494. Pertusaria leioplaca (Ach.) DC. - Wetmore (1981: 489 as Pertusaria leucostoma), Wetmore (2005: 89 without records)
  495. Pertusaria macounii (I. M. Lamb) Dibben- Wetmore (2005: 89 without records)
  496. Pertusaria multipunctoides - Wetmore (2005: 89 without records)
  497. Pertusaria ophthalmiza - Wetmore (2005: 89 without records)
  498. Pertusaria plittiana - Wetmore (2005: 89 without records)
  499. Pertusaria pustulata - Wetmore (2005: 89 without records)
  500. Pertusaria rhexostoma - Wetmore (2005: 89 without records)
  501. Pertusaria stenhammarii Hellb. - Wetmore (1981: 489)
  502. Pertusaria trachythallina - Wetmore (2005: 89 without records)
  503. Pertusaria velata - Wetmore (2005: 89 without records)

  504. Phaeocalicium compressulum - Wetmore (2005: 89 without records)
  505. Phaeocalicium curtisii - Wetmore (2005: 89 without records)
  506. Phaeocalicium polyporaeum - Wetmore (2005: 89 without records)
  507. Phaeocalicium populneum - Wetmore (2005: 89 without records)

  508. Phaeographis dendritica (Ach.) Müll. Arg. - Fink (1910: 54 as Graphis dendritica)

  509. Phaeophyscia adiastola (Essl.) Essl. - Wetmore (1981: 490), Wetmore (2005: 89 without records)
  510. Phaeophyscia hirsuta (Mereschk.) Essl. - Wetmore (1981: 490 as Phaeophyscia cernohorskyi), Wetmore (2005: 89 without records)
  511. Phaeophyscia ciliata (Hoffm.) Moberg - Wetmore (1981: 490), Wetmore (2005: 89 without records)
  512. Phaeophyscia endococcina (Körb.) Moberg - Wetmore (1981: 490), Thomson (1984: 348), Willson & Vinyard (1986: 12), Wetmore (2005: 89 without records)
  513. Phaeophyscia hirtella - Wetmore (2005: 89 without records)
  514. Phaeophyscia hispidula (Ach.) Essl. - Wetmore (1981: 490), Wetmore (2005: 90 without records)
  515. Phaeophyscia hirsuta (Mereschk.) Essl. - Wetmore (2005: 90 without records)
  516. Phaeophyscia hirtella Essl. - Esslinger (1978: 303 Protologue) Type in DUKE
  517. Phaeophyscia imbricata (Vain.) Essl. - Wetmore (2005: 90 without records)
  518. Phaeophyscia kairamoi (Vain.) Moberg - Wetmore (2005: 90 without records)
  519. Phaeophyscia melanchra (Hue) Hale - Wetmore (2005: 90 without records)
  520. Phaeophyscia nigricans (Flörke) Moberg - Wetmore (2005: 90 without records)
  521. Phaeophyscia orbicularis (Flörke) Moberg - Wetmore (2005: 90 without records)
  522. Phaeophyscia pusilloides (Zahlbr.) Essl. - Wetmore (1981: 490), Willson & Vinyard (1986: 12), Wetmore (2005: 90 without records)
  523. Phaeophyscia rubropulchra (Degel.) Moberg - Wetmore (1981: 490), Wetmore (2005: 90 without records)
  524. Phaeophyscia sciastra (Ach.) Moberg - Wetmore (1981: 490), Thomson (1984: 349), Willson & Vinyard (1986: 12), Wetmore (2005: 90 without records)
  525. Phaeophyscia squarrosa Kashiw. - Wetmore (1981: 490 as Phaeophyscia imbricata)

  526. Phlyctis argena (Ach.) Flot. - Wetmore (1981: 490), Wetmore (2005: 90 without records)

  527. Phylliscum demangeonii (Moug. & Mont.) Nyl. - Wetmore (1981: 490), Thomson (1997: 469), Wetmore (2005: 90 without records)

  528. Physcia adscendens H. Olivier - Wetmore (1981: 490), Thomson (1984: 352), Willson & Vinyard (1986: 12), Wetmore (2005: 90 without records)
  529. Physcia aipolia (Ehrh. ex Humb.) Fürnr. var. aipolia - Wetmore (1981: 490), Thomson (1984: 353), Willson & Vinyard (1986: 12), Wetmore (2005: 90 without records)
  530. Physcia americana G. Merr. - Wetmore (1981: 490), Willson & Vinyard (1986: 12), Wetmore (2005: 90 without records)
  531. Physcia caesia (Hoffm.) Hampe ex Fürnr. - Wetmore (1981: 490), Thomson (1984: 354), Wetmore (2005: 90 without records)
  532. Physcia dakotensis Essl. - Esslinger (2004: 302), Wetmore (2005: 90 without records)
  533. Physcia dubia (Hoffm.) Lettau - Wetmore (1981: 490), Thomson (1984: 355), Willson & Vinyard (1986: 12), Wetmore (2005: 90 without records)
  534. Physcia halei J. W. Thomson - Willson & Vinyard (1986: 12), Wetmore (2005: 90 without records)
  535. Physcia millegrana Degel. - Wetmore (1981: 490), Wetmore (2005: 90 without records)
  536. Physcia phaea (Tuck.) J. W. Thomson - Wetmore (1981: 490), Thomson (1984: 356), Wetmore (2005: 90 without records)
  537. Physcia stellaris (L.) Nyl. - Wetmore (1981: 490), Willson & Vinyard (1986: 12), Wetmore (2005: 90 without records)
  538. Physcia subtilis Degel. - Wetmore (1981: 490), Willson & Vinyard (1986: 12), Wetmore (2005: 90 without records)
  539. Physcia tenella (Scop.) DC. - Willson & Vinyard (1986: 12)

  540. Physciella chloantha (Ach.) Essl. - Wetmore (1981: 490 as Phaeophyscia chloantha), Willson & Vinyard (1986: 12 as Physcia chloantha), Wetmore (2005: 89 without records)
  541. Physciella melanchra (Hue) Essl. - Willson & Vinyard (1986: 12 as Physcia melanchra)

  542. Physconia detersa (Nyl.) Poelt - Wetmore (1981: 490), Thomson (1984: 359), Willson & Vinyard (1986: 12), Wetmore (2005: 90 without records)
  543. Physconia kurokawae Kashiw. - Wetmore (2005: 90 without records)
  544. Physconia leucoleiptes (Tuck.) Essl. - Wetmore (2005: 90 without records)
  545. Physconia muscigena (Ach.) Poelt - Thomson (1984: 360), Wetmore (2005: 90 without records)

  546. Piccolia ochrophora (Nyl.) Hafellner - Wetmore (2005: 91 as Strangospora ochrophora without records)

  547. Pilophorus cereolus (Ach.) Th. Fr. - Thomson (1984: 362)

  548. Placidium arboreum (Schwein. ex E. Michener) Lendemer - Wetmore (1981: 488 as Dermatocarpon tuckermanii)
  549. Placidium lachneum (Ach.) B. de Lesd. - Willson & Vinyard (1986: 12 as Dermatocarpon lachneum)
  550. Placidium squamulosum (Ach.) Breuss - Thomson (1984: 215 as Dermatocarpon hepaticum)

  551. Placopyrenium fuscellum (Turner) Gueidan & Cl. Roux - Wetmore (2005: 92 as Verrucaria fuscella without records)

  552. Placynthiella dasaea (Stirt.) Tønsberg - Wetmore (2005: 90 without records)
  553. Placynthiella icmalea (Ach.) Coppins & P. James - Wetmore (2005: 90 without records)
  554. Placynthiella oligotropha (J. R. Laundon) Coppins & P. James - Wetmore (1981: 489 as Lecidea oligotropha), Thomson (1997: 474), Wetmore (2005: 90 without records)
  555. Placynthiella uliginosa (Schrad.) Coppins & P. James - Wetmore (1981: 489 as Lecidea uliginosa), Thomson (1997: 475), Wetmore (2005: 90 without records)

  556. Placynthium nigrum (Huds.) Gray - Wetmore (1981: 490), Thomson (1984: 366), Willson & Vinyard (1986: 12), Wetmore (2005: 90 without records)
  557. Placynthium stenophyllum (Tuck.) Fink - Wetmore (2005: 90 without records)

  558. Platismatia glauca (L.) W. L. Culb. & C. F. Culb. - Thomson (1984: 368), Wetmore (2005: 90 without records)
  559. Platismatia tuckermanii (Oakes) W. L. Culb. & C. F. Culb. - Wetmore (1981: 490), Wetmore (2005: 90 without records)

  560. Pleopsidium chlorophanum (Wahlenb.) Zopf - Willson & Vinyard (1986: 11 as Acarospora chlorophana)
  561. Pleopsidium flavum (Trevis.) Körb. - Wetmore (2005: 90 without records)

  562. Polyblastia cupularis A. Massal. - Wetmore (2005: 90 without records)

  563. Polyblastidium hypoleucum (Ach.) Kalb - Wetmore (1981: 488 as Heterodermia hypoleuca), Willson & Vinyard (1986: 12 as Heterodermia hypoleuca), Wetmore (2005: 87 as Heterodermia hypoleuca without records)

  564. Polycauliona candelaria (L.) Frödén, Arup & Søchting - Willson & Vinyard (1986: 12 as Xanthoria candelaria)
  565. Polycauliona polycarpa (Hoffm.) Frödén, Arup & Søchting - Wetmore (1981: 490 as Xanthoria polycarpa), Thomson (1984: 487 as Xanthoria polycarpa), Willson & Vinyard (1986: 12 as Xanthoria polycarpa)
  566. Polycauliona stellata (Wetmore & Kärnefelt) Arup, Frödén & Søchting - Wetmore (2005: 86 as Caloplaca stellata without records)

  567. Polysporina simplex (Borrer ex Hook.) Vezda - Wetmore (1981: 490 as Sarcogyne simplex), Thomson (1997: 486), Wetmore (2005: 90 without records)

  568. Porocyphus coccodes Flot. ex Körb. - Thomson (1997: 488)

  569. Porpidia albocaerulescens (Wulfen) Hertel & Knoph - Wetmore (2005: 90 without records)
  570. Porpidia cinereoatra (Ach.) Hertel & Knoph - Wetmore (2005: 90 without records)
  571. Porpidia crustulata (Ach.) Hertel & Knoph - Wetmore (2005: 90 without records)
  572. Porpidia diversa (J. Lowe) Gowan - Wetmore (2005: 90 without records)
  573. Porpidia herteliana Gowan - Wetmore (2005: 90 without records)
  574. Porpidia macrocarpa (DC.) Hertel & A. J. Schwab - Wetmore (1981: 488 as Huilia macrocarpa), Wetmore (2005: 90 without records)
  575. Porpidia speirea (Ach.) Kremp. - Thomson (1997: 497), Wetmore (2005: 90 without records)
  576. Porpidia tahawasiana Gowan - Wetmore (2005: 90 without records)
  577. Porpidia tuberculosa (Sm.) Hertel & Knoph - Wetmore (2005: 90 without records)

  578. Protoblastenia rupestris (Scop.) Steiner - Thomson (1997: 503), Wetmore (2005: 90 without records)

  579. Protopannaria pezizoides (Weber) P. M. Jørg. & S. Ekman - Thomson (1984: 294 as Pannaria pezizoides), Wetmore (2005: 89 as Pannaria pezizoides without records)

  580. Protoparmelia badia (Hoffm.) Hafellner - Wetmore (2005: 90 without records)
  581. Protoparmelia hypotremella Herk, Spier & V. Wirth - Wetmore (2005: 90 without records)

  582. Pseudevernia consocians (Vain.) Hale & W. L. Culb. - Wetmore (1981: 490), Wetmore (2005: 90 without records)

  583. Pseudocyphellaria crocata (L.) Vain. - Wetmore (1981: 490), Wetmore (2005: 90 without records)

  584. Psilolechia lucida (Ach.) M. Choisy - Wetmore (1981: 489 as Lecidea lucida), Wetmore (2005: 90 without records)

  585. Psora decipiens (Hedwig) Hoffm. - Thomson (1997: 507), Wetmore (2005: 90 without records)

  586. Psora globifera (Ach.) A. Massal. - Thomson (1997: 508), Wetmore (2005: 90 without records)
  587. Psora icterica (Mont.) Müll. Arg. - Wetmore (2005: 90 without records)
  588. Psora pseudorussellii Timdal - Wetmore (2005: 90 without records)

  589. Psorula rufonigra (Tuck.) Gotth. Schneid. - Wetmore (1981: 489 as Lecidea rufonigra), Thomson (1997: 515), Wetmore (2005: 90 without records)

  590. Punctelia appalachiensis (W. L. Culb.) Krog - Wetmore (2005: 90 without records)
  591. Punctelia bolliana (Müll. Arg.) Krog - Wetmore (1981: 489 as Parmelia bolliana), Willson & Vinyard (1986: 12 as Parmelia bolliana), Wetmore (2005: 90 without records)
  592. Punctelia graminicola (B. de Lesd.) Egan - Wetmore (2005: 90 without records)
  593. Punctelia hypoleucites (Nyl.) Krog - Wetmore (2005: 90 without records)
  594. Punctelia perreticulata (Räsänen) G. Wilh. & Ladd - Wetmore (2005: 90 without records)
  595. Punctelia rudecta (Ach.) Krog - Wetmore (1981: 489 as Parmelia rudecta), Willson & Vinyard (1986: 12 as Parmelia rudecta), Wetmore (2005: 90 without records)
  596. Punctelia stictica (Delise ex Duby) Krog - Wetmore (2005: 90 without records)

  597. Pyrenopsis polycocca (Nyl.) Tuck. - Wetmore (2005: 90 without records)
  598. Pyrenula pseudobufonia (Rehm) R. C. Harris - Wetmore (2005: 90 without records)
  599. Pyxine sorediata (Ach.) Mont. - Wetmore (1981: 490), Wetmore (2005: 90 without records)

  600. Ramalina americana Hale - Wetmore (1981: 490), Willson & Vinyard (1986: 12), Wetmore (2005: 90 without records)
  601. Ramalina dilacerata (Hoffm.) Hoffm. - Wetmore (1981: 490), Wetmore (2005: 90 without records)
  602. Ramalina intermedia (Del. ex Nyl.) Nyl. - Wetmore (1981: 490), Thomson (1984: 379), Willson & Vinyard (1986: 12), Wetmore (2005: 90 without records)
  603. Ramalina obtusata (Arnold) Bitter - Thomson (1984: 380), Wetmore (2005: 90 without records)
  604. Ramalina roesleri (Hoechst. ex Schaer.) Hue - Thomson (1984: 233 as Fisturiella roesleri), Wetmore (2005: 90 without records)
  605. Ramalina sinensis Jatta - Wetmore (1981: 490), Wetmore (2005: 90 without records)
  606. Ramalina thrausta (Ach.) Nyl. - Wetmore (2005: 90 without records)
  607. Ramalina unifolia J. W. Thomson - Thomson (1990: 341 Type in WIS), Wetmore (2005: 90 without records)

  608. Ramboldia elabens (Fr.) Kantvilas & Elix - Wetmore (1981: 488 as Lecidea elabens), Wetmore (2005: 90 as Pyrrhospora elabens without records)

  609. Rhizocarpon badioatrum (Flörke ex Sprengel) Th. Fr. - Wetmore (1981: 490), Thomson (1997: 524), Wetmore (2005: 90 without records)
  610. Rhizocarpon cinereovirens (Müll. Arg.) Vain. - Wetmore (1981: 490), Thomson (1997: 528), Wetmore (2005: 90 without records)
  611. Rhizocarpon concentricum (Davis) Beltr. - Wetmore (1981: 490), Thomson (1997: 529)
  612. Rhizocarpon disporum (Nägeli ex Hepp) Müll. Arg. - Wetmore (1981: 490), Willson & Vinyard (1986: 12), Wetmore (2005: 90 without records)
  613. Rhizocarpon distinctum Th. Fr. - Wetmore (2005: 90 without records)
  614. Rhizocarpon eupetraeum (Nyl.) Arnold - Thomson (1997: 533)
  615. Rhizocarpon geminatum Körb. - Thomson (1997: 537), Wetmore (2005: 90 without records)
  616. Rhizocarpon geographicum (L.) DC. - Wetmore (1981: 490), Thomson (1997: 538), Wetmore (2005: 90 without records)
  617. Rhizocarpon grande (Flörke ex Flot.) Arnold - Wetmore (1981: 490), Thomson (1997: 539), Wetmore (2005: 90 without records)
  618. Rhizocarpon hochstetteri (Körb.) Vain. - Wetmore (1981: 490), Thomson (1997: 540), Wetmore (2005: 90 without records)
  619. Rhizocarpon lavatum (Ach.) Hazsl. - Wetmore (2005: 90 without records)
  620. Rhizocarpon obscuratum auct. - Wetmore (1981: 490), Thomson (1997: 545)
  621. Rhizocarpon petraeum - Wetmore (2005: 90 without records)
  622. Rhizocarpon reductum - Wetmore (2005: 90 without records)
  623. Rhizocarpon rubescens Th. Fr. - Wetmore (1981: 490 as Rhizocarpon plicatile), Wetmore (2005: 90 without records)
  624. Rhizocarpon subgeminatum Eitner - Wetmore (1981: 490), Wetmore (2005: 84 without records)

  625. Rhizoplaca chrysoleuca (Sm.) Zopf - Wetmore (1981: 490), Willson & Vinyard (1986: 12), Thomson (1997: 554), Wetmore (2005: 91 without records)
  626. Rhizoplaca melanophthalma (Ramond) Leuckert & Poelt - Wetmore (1981: 490), Willson & Vinyard (1986: 12), Thomson (1997: 555), Wetmore (2005: 91 without records)
  627. Rhizoplaca subdiscrepans (Nyl.) R. Sant. - Wetmore (2005: 91 without records)

  628. Rimularia caeca (Lowe) Rambold & Printzen - Wetmore (1981: 488 as Lecidea caeca), Wetmore (2005: 91 without records)

  629. Rinodina adirondackii H. Magn. - Wetmore (2005: 91 without records)
  630. Rinodina archaea (Ach.) Arnold - Wetmore (1981: 490), Thomson (1997: 560), Wetmore (2005: 91 without records)
  631. Rinodina austroborealis Sheard - Wetmore (2005: 91 without records)
  632. Rinodina bischoffii (Hepp) A. Massal. - Wetmore (2005: 91 without records)
  633. Rinodina cana (Arnold) Arnold - Wetmore (1981: 490 as Rinodina iowensis), Wetmore (2005: 91 without records)
  634. Rinodina colobina (Ach.) Th. Fr. - Wetmore (2005: 91 without records)
  635. Rinodina colobinoides - Wetmore (2005: 91 without records)
  636. Rinodina confragosa - Wetmore (2005: 91 without records)
  637. Rinodina efflorescens - Wetmore (2005: 91 without records)
  638. Rinodina excrescens - Wetmore (2005: 91 without records)
  639. Rinodina degeliana - Wetmore (2005: 84 without records)
  640. Rinodina exigua (Ach.) S. Gray - Wetmore (1981: 490), Wetmore (2005: 91 without records)
  641. Rinodina freyi - Wetmore (2005: 84 without records)
  642. Rinodina glauca - Wetmore (2005: 91 without records)
  643. Rinodina granulans - Wetmore (2005: 91 without records)
  644. Rinodina isidiate - Wetmore (2005: 84 without records)
  645. Rinodina magnusonii - Wetmore (2005: 84 without records)
  646. Rinodina metaboliza - Wetmore (2005: 91 without records)
  647. Rinodina oleae - Wetmore (2005: 84 without records)
  648. Rinodina oxydata - Wetmore (2005: 91 without records)
  649. Rinodina pachysperma H. Magn. - Wetmore (1981: 490), Willson & Vinyard (1986: 12), Wetmore (2005: 91 without records)
  650. Rinodina polyspora - Wetmore (2005: 91 without records)
  651. Rinodina populicola H. Magn. - Wetmore (1981: 490), Wetmore (2005: 91 without records)
  652. Rinodina septentrionalis - Wetmore (2005: 91 without records)
  653. Rinodina siouxiana - Wetmore (2005: 91 without records)
  654. Rinodina subminuta H. Magn. - Wetmore (1981: 490), Wetmore (2005: 91 without records)

  655. Rinodina tephraspis (Tuck.) Herre - Wetmore (1981: 490), Wetmore (2005: 84 without records)
  656. Rinodina thomsonii Sheard - Wetmore (2005: 91 without records)
  657. Rinodina santae-monicae H. Magn. - Sheard (1995: 124 as Rinodina thomsonii)
  658. Rinodina turfacea (Wahlenb.) Körb. - Wetmore (1981: 490)
  659. Rinodina vezdae H. Mayrhofer - Wetmore (2005: 91 without records)
  660. Rinodina wetmorei Sheard - Sheard (2010: 206 Type in MIN)

  661. Ropalospora chlorantha (Tuck.) S. Ekman - Wetmore (2005: 91 without records)
    Ropalospora viridis - Wetmore (2005: 84 without records)

  662. Rufoplaca arenaria (Pers.) Arup, Søchting & Frödén - Wetmore (1981: 487 as Caloplaca arenaria), Wetmore (2005: 85 as Caloplaca arenaria without records)
  663. Rufoplaca oxfordensis (Fink) Arup, Søchting & Frödén - Wetmore (2005: 86 as Caloplaca oxfordensis without records)
  664. Rusavskia elegans (Link) S. Y. Kondr. & Kärnefelt - Wetmore (1981: 490 as Xanthoria elegans), Thomson (1984: 484 as Xanthoria elegans), Willson & Vinyard (1986: 12 as Xanthoria elegans)
  665. Rusavskia sorediata (Vain.) S. Y. Kondr. & Kärnefelt - Wetmore (1981: 490 as Xanthoria sorediata)

  666. Sagiolechia rhexoblephara (Nyl.) Zahlbr. - Thomson (1997: 575)

  667. Sarcogyne regularis Körb. - Thomson (1997: 579), Wetmore (2005: 91 without records)

  668. Sarcosagium campestre - Wetmore (2005: 91 without records)
  669. Sarea difformis - Wetmore (2005: 91 without records)
  670. Sarea resinae - Wetmore (2005: 91 without records)
  671. Schismatomma pericleum - Wetmore (2005: 91 without records)
  672. Sclerophora farinacea - Wetmore (2005: 91 without records)
  673. Sclerophora nivea (Hoffm.) Tibell - Fink (1910: 45 as Coniocybe pallida), Wetmore (1981: 488 as Coniocybe pallida), Wetmore (2005: 91 without records)

  674. Scoliciosporum chlorococcum (Graewe ex Stenh.) Vezda - Wetmore (1981: 487 as Bacidia chlorococca), Wetmore (2005: 91 without records)
  675. Scoliciosporum umbrinum (Ach.) Arnold - Wetmore (1981: 487 as Bacidia umbrina), Thomson (1997: 585), Wetmore (2005: 91 without records)

  676. Scytinium gelatinosum (With.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 263 as Leptogium sinuatum)
  677. Scytinium lichenoides (L.) Otálora, P. M. Jørg. & Wedin - Wetmore (1981: 489 as Leptogium lichenoides), Thomson (1984: 257 as Leptogium lichenoides)
  678. Scytinium subtile (Schrad.) Otálora, P. M. Jørg. & Wedin - Wetmore (1981: 489 as Leptogium minutissimum)
  679. Scytinium tenuissimum (Hoffm.) Otálora, P. M. Jørg. & Wedin - Wetmore (1981: 489 as Leptogium tenuissimum), Thomson (1984: 264 as Leptogium tenuissimum)

  680. Solitaria chrysophthalma (Degel.) Arup, Søchting & Frödén - Wetmore (1981: 487 as Caloplaca chrysophthalma), Wetmore (2005: 85 as Caloplaca chrysophthalma without records)

  681. Solorina saccata (L.) Ach. - Thomson (1984: 390), Wetmore (2005: 91 without records)

  682. Sphinctrina anglica Nyl. - Wetmore (2005: 91 without records)
  683. Sphinctrina leucopoda Nyl. - Wetmore (2005: 91 without records)
  684. Sphinctrina turbinata (Pers.) De Not. - Wetmore (2005: 91 without records)

  685. Spiloma fuliginosum Turner & Borrer - Wetmore (1981: 487 as Arthonia fuliginosa), Wetmore (2005: 85 as Arthonia fuliginosa without records)
  686. Spilonema revertens Nyl. - Wetmore (1981: 490), Wetmore (2005: 91 without records)

  687. Squamulea galactophylla (Tuck.) Arup, Søchting & Frödén - Wetmore (2005: 86 as Caloplaca galactophylla without records)
  688. Squamulea subsoluta (Nyl.) Arup, Søchting & Frödén - Wetmore (2005: 86 as Caloplaca subsoluta without records)

  689. Staurothele areolata (Ach.) Lettau - Thomson (1997: 592), Wetmore (2005: 91 without records)
  690. Staurothele drummondii (Tuck.) Tuck. - Wetmore (1981: 490 as Staurothele clopima), Willson & Vinyard (1986: 12 as Staurothele clopima), Thomson (1997: 595), Wetmore (2005: 91 without records)
  691. Staurothele elenkinii Oxner - Wetmore (2005: 91 without records)
  692. Staurothele fissa (Taylor) Zwackh - Wetmore (1981: 490), Willson & Vinyard (1986: 12), Thomson (1997: 596), Wetmore (2005: 91 without records)

  693. Stenocybe major Nyl. ex Körb. - Wetmore (2005: 91 without records)
  694. Stenocybe pullatula (Ach.) Stein - Wetmore (2005: 91 without records)
  695. Stereocaulon dactylophyllum Flörke - Wetmore (1981: 490), Thomson (1984: 410), Wetmore (2005: 91 without records)
  696. Stereocaulon evolutum Graewe - Wetmore (2005: 84 without records)
  697. Stereocaulon paschale (L.) Hoffm. - Wetmore (1981: 490), Thomson (1984: 418), Wetmore (2005: 91 without records)
  698. Stereocaulon pileatum Ach. - Thomson (1984: 419), Wetmore (2005: 91 without records)
  699. Stereocaulon saxatile H. Magn. - Wetmore (1981: 490), Thomson (1984: 423), Wetmore (2005: 91 without records)
  700. Stereocaulon spathuliferum Vain. - Thomson (1984: 425)
  701. Stereocaulon taeniarum (H. Magn.) Kivistö - Wetmore (2005: 84 without records)
  702. Stereocaulon tomentosum E. Fries - Wetmore (1981: 490), Thomson (1984: 428), Wetmore (2005: 91 without records)

  703. Sticta beauvoisii Delise - Wetmore (2005: 91 without records)
  704. Sticta fuliginosa (Dicks.) Ach. - Wetmore (1981: 490), Wetmore (2005: 91 without records)

  705. Stictis urceolata (Ach.) Gilenstam - Wetmore (2005: 87 as Conotrema urceolatum without records)

  706. Strangospora microhaema (Norm. in Th. Fr.) R. A. Anderson - Wetmore (1981: 487 as Biatorella microhaema), Wetmore (2005: 91 without records)
  707. Strangospora moriformis (Ach.) Stein - Wetmore (1981: 487 as Biatorella moriformis), Thomson (1997: 599), Wetmore (2005: 91 without records)
  708. Strangospora pinicola - Wetmore (2005: 91 without records)

  709. Strigula jamesii (Swinsc.) R. C. Harris - Wetmore (1981: 490 erroneously as Strigula affinis)
  710. Strigula stigmatella (Ach.) R. C. Harris - Wetmore (1981: 487 as Arthopyrenia faginea)
  711. Strigula submuriformis (R. C. Harris) R. C. Harris - Wetmore (2005: 91 without records)

  712. Synalissa symphorea (Ach.) Nyl. - Wetmore (2005: 91 without records)
  713. Teloschistes chrysophthalmus (L.) Th. Fr. - Wetmore (1981: 490), Wetmore (2005: 91 without records)

  714. Tephromela atra (Huds.) Hafellner - Wetmore (2005: 91 without records)
  715. Thelocarpon epibolum Nyl. - Wetmore (2005: 91 without records)
  716. Thelocarpon laureri (Flot.) Nyl. - Wetmore (1981: 490), Wetmore (2005: 91 without records)

  717. Thrombium epigaeum (Pers.) Wallr. - Wetmore (1981: 490), Thomson (1997: 610), Wetmore (2005: 91 without records)

  718. Thyrea confusa Henssen - Wetmore (2005: 91 without records)
  719. Toninia aromatica (Turner ex Sm.) A. Massal. - Thomson (1997: 613), Wetmore (2005: 91 without records)
  720. Toninia ruginosa (Tuck.) Herre - Wetmore (2005: 91 without records)
  721. Toninia sedifolia (Scop.) Timdal - Wetmore (2005: 91 without records)
  722. Toninia squalida (Ach.) A. Massal. - Wetmore (2005: 91 without records)
  723. Trapelia coarctata (Turner ex Sm. & Sow.) M. Choisy - Thomson (1997: 621), Wetmore (2005: 91 without records)
  724. Trapelia involuta (Taylor) Hertel - Wetmore (2005: 91 without records)
  725. Trapelia obtegens (Th. Fr.) Hertel - Wetmore (2005: 91 without records)
  726. Trapelia placodioides Coppins & P. James - Wetmore (2005: 91 without records)
  727. Trapeliopsis flexuosa (Fr.) Coppins & P. James - Wetmore (1981: 488 as Lecidea aeruginosa), Thomson (1997: 623), Wetmore (2005: 91 without records)
  728. Trapeliopsis granulosa (Hoffm.) H. T. Lumbsch - Wetmore (1981: 489 as Lecidea granulosa), Thomson (1997: 624), Wetmore (2005: 91 without records)
  729. Trapeliopsis viridescens (Schrad.) Coppins & P. James - Wetmore (1981: 489 Micarea viridescens), Thomson (1997: 625), Wetmore (2005: 91 without records)

  730. Traponora varians (Ach.) J. Kalb & Kalb - Wetmore (2005: 90 as Pyrrhospora varians without records)

  731. Tuckermanella fendleri (Nyl.) Essl. - Wetmore (1981: 487 as Cetraria fendleri)

  732. Tuckermannopsis americana (Sprengel) Hale - Wetmore (1981: 487 as Cetraria halei), Thomson (1984: 81 as Cetraria halei)
  733. Tuckermannopsis orbata (Nyl.) M. J. Lai - Wetmore (1981: 487 as Cetraria orbata)
  734. Tuckermannopsis sepincola (Ehrh.) Hale - Wetmore (1981: 487 as Cetraria sepincola)

  735. Umbilicaria americana Poelt & T. H. Nash - Wetmore (2005: 91 without records)
  736. Umbilicaria arctica (Ach.) Nyl. - Thomson (1984: 444)
  737. Umbilicaria deusta (L.) Baumg. - Wetmore (1981: 490), Thomson (1984: 449), Wetmore (2005: 91 without records)
  738. Umbilicaria hyperborea (Ach.) Hoffm. var. hyperborea - Wetmore (1981: 490), Thomson (1984: 453), Wetmore (2005: 91 without records)
  739. Umbilicaria mammulata (Ach.) Tuck. - Wetmore (1981: 490), Wetmore (2005: 91 without records)
  740. Umbilicaria muehlenbergii (Ach.) Tuck. - Wetmore (1981: 487 as Actinogyra muehlenbergii), Thomson (1984: 26 as Actinogyra muehlenbergii), Wetmore (2005: 91 without records)
  741. Umbilicaria torrefacta (Lightf.) Schrad. - Wetmore (2005: 91 without records)
  742. Umbilicaria polyrrhiza (L.) Fr. - Thomson (1984: 27 as Actinogyra polyrrhiza)
  743. Umbilicaria vellea (L.) Ach. - Wetmore (1981: 490), Thomson (1984: 460), Wetmore (2005: 91 without records)

  744. Usnea amblyoclada (Müll. Arg.) Zahlbr. - Wetmore (2005: 91 without records)
  745. Usnea angulata Ach. - Wetmore (2005: 92 without records)
  746. Usnea cavernosa Tuck. - Wetmore (1981: 490), Thomson (1984: 463), Wetmore (2005: 92 without records)
  747. Usnea ceratina Ach. - Wetmore (2005: 92 without records)
  748. Usnea dasopoga (Ach.) Nyl. - Thomson (1984: 465)
  749. Usnea filipendula Stirt. - Wetmore (1981: 490), Wetmore (2005: 92 without records)
  750. Usnea fulvoreagens (Räsänen) Räsänen - Wetmore (1981: 490)
  751. Usnea hirta (L.) Weber ex F. H. Wigg. - Wetmore (1981: 490), Thomson (1984: 466), Wetmore (2005: 92 without records)
  752. Usnea lapponica Vain. - Wetmore (2005: 92 without records)
  753. Usnea longissima Ach. - Wetmore (1981: 490 Extinct), Wetmore (2005: 92 without records)
  754. Usnea mutabilis Stirt. - Wetmore (2005: 92 without records)
  755. Usnea rubicunda Stirt. - Wetmore (2005: 92 without records)
  756. Usnea subfloridana Stirt. - Wetmore (1981: 490), Wetmore (2005: 92 without records)

  757. Vahliella leucophaea (Vahl) P. M. Jørg. - Wetmore (1981: 489 as Pannaria leucophaea), Wetmore (2005: 87 as Fuscopannaria leucophaea without records)
  758. Variolaria multipunctoides (Dibben) Lendemer, Hodkinson & R. C. Harris - Wetmore (1981: 489 as Pertusaria multipunctoides)
  759. Variolaria ophthalmiza Nyl. - Wetmore (1981: 489 as Pertusaria ophthalmiza)
  760. Variolaria trachythallina (Erichsen) Lendemer, Hodkinson & R. C. Harris - Wetmore (1981: 489 as Pertusaria trachythallina)

  761. Varicellaria velata (Turner) I. Schmitt & Lumbsch - Wetmore (1981: 489 as Pertusaria velata)

  762. Verrucaria aethiobola Wahlenb. - Thomson (1997: 632)
  763. Verrucaria fayettensis Servít - Wetmore (2005: 84 without records)
  764. Verrucaria glaucovirens Grummann - Wetmore (2005: 92 without records)
  765. Verrucaria margacea (Wahlenb. in Ach.) Wahlenb. - Wetmore (1981: 490), Thomson (1997: 639), Wetmore (2005: 92 without records)
  766. Verrucaria muralis Ach. - Thomson (1997: 641), Wetmore (2005: 92 without records)
  767. Verrucaria nigrescens Pers. - Wetmore (1981: 490), Thomson (1997: 642), Wetmore (2005: 92 without records)
  768. Verrucaria nigrescentoidea Fink ex J. Hedrick - Wetmore (2005: 92 without records)
  769. Verrucaria rupestris Schrad. - Thomson (1997: 643)

  770. Violella fucata (Stirt.) T. Sprib. - Wetmore (2005: 84 as Mycoblastus fucatus without records)

  771. Vulpicida pinastri (Scop.) S. Gray - Wetmore (1981: 487 as Cetraria pinastri), Thomson (1984: 93 as Cetraria pinastri)

  772. Xanthocarpia feracissima (H. Magn.) Frödén, Arup & Søchting - Wetmore (1981: 487 as Caloplaca feracissima), Wetmore (2005: 85 as Caloplaca feracissima without records)

  773. Xanthoparmelia angustiphylla (Gyeln.) Hale - Wetmore (1981: 489 erroneously as Parmelia hypopsila), Wetmore (2005: 92 without records)
  774. Xanthoparmelia conspersa (Ehrh. ex Ach.) Hale - Wetmore (1981: 489 as Parmelia conspersa), Willson & Vinyard (1986: 12), Wetmore (2005: 92 without records)
  775. Xanthoparmelia cumberlandia (Gyeln.) Hale - Wetmore (1981: 489 as Parmelia cumberlandia), Willson & Vinyard (1986: 12), Wetmore (2005: 92 without records)
  776. Xanthoparmelia hypomelaena (Hale) Hale - Wetmore (2005: 92 without records)
  777. Xanthoparmelia rimalis (Kurok.) Elix, A. Thell & Søchting - Wetmore (2005: 92 as Xanthoparmelia lineola without records)
  778. Xanthoparmelia mexicana (Gyeln.) Hale - Wetmore (1981: 489 as Parmelia mexicana), Wetmore (2005: 92 without records)
  779. Xanthoparmelia plittii (Gyeln.) Hale - Wetmore (1981: 489 as Parmelia plittii), Willson & Vinyard (1986: 12), Wetmore (2005: 92 without records)
  780. Xanthoparmelia somloensis (Gyeln.) Hale - Wetmore (2005: 92 without records)
  781. Xanthoparmelia taractica (Kremp.) Hale - Wetmore (1981: 489 as Parmelia taractica), Thomson (1984: 480)
  782. Xanthoparmelia tasmanica (Hook. f. & Taylor) Hale - Wetmore (2005: 92 without records)

  783. Xanthomendoza fallax Søchting, Kärnefelt & S. Y. Kondr. - Wetmore (1981: 490 as Xanthoria fallax), Thomson (1984: 486 as Xanthoria fallax), Willson & Vinyard (1986: 12 as Xanthoria fallax), Wetmore (2005: 92 as Xanthoria fallax without records)

  784. Xanthoria candelaria - Wetmore (2005: 92 as Xanthoria candelaria without records)
  785. Xanthoria elegans - Wetmore (2005: 92 as Xanthoria elegans without records)
  786. Xanthoria fulva - Wetmore (2005: 92 as Xanthoria fulva without records)
  787. Xanthoria hasseana - Wetmore (2005: 92 as Xanthoria hasseana without records)
  788. Xanthoria polycarpa - Wetmore (2005: 92 as Xanthoria polycarpa without records)
  789. Xanthoria sorediata - Wetmore (2005: 92 as Xanthoria sorediata without records)
  790. Xanthoria ulophyllodes - Wetmore (2005: 92 as Xanthoria ulophyllodes without records)

  791. Xylographa disseminata Willey - Wetmore (1981: 490), Wetmore (2005: 92 without records)
  792. Xylographa parallela (Ach.) Fr. - Wetmore (1981: 490 as Xylographa abietina), Wetmore (2005: 92 without records)
  793. Xylographa vitiligo (Ach.) J. R. Laundon - Wetmore (1981: 490), Wetmore (2005: 92 without records)

  794. Xylopsora friesii (Ach.) Bendiksby & Timdal - Wetmore (1981: 489 as Lecidea friesii), Thomson (1997: 247 as Hypocenomyce friesii)