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

 

  1. Acarospora fuscata (Schrad.) Arnold - Rosentreter (2008 Internet)
  2. Acarospora fuscescens H. Magn. - Knudsen (2008: 83)
  3. Acarospora glaucocarpa (Ach.) Körb. - Rosentreter (2008 Internet)
  4. Acarospora nodulosa (Dufour) Hue var. nodulosa - Rosentreter (2008 Internet as Acarospora geogena), Rosentreter (2008 Internet)
  5. Acarospora schleicheri (Ach.) A. Massal. - Thomson (1997: 33), Rosentreter (2008 Internet)
  6. Acarospora strigata (Nyl.) Jatta - Rosentreter (2008 Internet)

  7. Ahtiana pallidula (Tuck. ex Riddle) Goward & A. Thell - Rosentreter (2008 Internet)
  8. Ahtiana sphaerosporella (Müll. Arg.) Goward - Anderegg et al. (1973: 207 as Parmelia sphaerosporella), Rosentreter (2008 Internet)

  9. Alectoria imshaugii Brodo & D. Hawksw. - Brodo & Hawksworth (1977: 59 Type in xx), Rosentreter (2008 Internet)
  10. Alectoria sarmentosa (Ach.) Ach. - Rosentreter (2008 Internet)

  11. Amandinea punctata (Hoffm.) Coppins & Scheid. - Thomson (1997: 138 as Buellia punctata), Rosentreter (2008 Internet)

  12. Anaptychia ulothricoides (Vain.) Vain. - Rosentreter (2008 Internet as 'ulotricoides')

  13. Arthonia glebosa Tuck. - Rosentreter (2008 Internet)
  14. Arthonia punctiformis Ach. - Rosentreter (2008 Internet)

  15. Arthrorhaphis citrinella (Ach.) Poelt - Rosentreter (2008 Internet)

  16. Aspicilia albomarginata B. de Lesd. - Rosentreter (2008 Internet)
  17. Aspicilia cinerea (L.) Körb. - Thomson (1997: 68), Rosentreter (2008 Internet)
  18. Aspicilia filiformis Rosentr. - Rosentreter (2008 Internet)
  19. Aspicilia pergibbosa (H. Magn. ex Lynge) Räsänen - Rosentreter (2008 Internet)
  20. Aspicilia reptans (Looman) Wetmore - Rosentreter (2008 Internet)
  21. Aspicilia subradians (Nyl.) Hue - Thomson (1997: 94)
  22. Aspicilia supertegens Arnold - Thomson (1997: 95)

  23. Athallia holocarpa (Hoffm.) Arup, Frödén & Søchting - Thomson (1997: 164 as Caloplaca holocarpa), Rosentreter (2008 Internet as Caloplaca holocarpa)

  24. Bacidia idahoensis H. Magn. - Magnusson (1952: 45 Type in Göteborg, Sweden GB), Rosentreter (2008 Internet as Bacidia laurocerasi subsp. idahoensis)

  25. Baeomyces rufus (Huds.) Rebent. - Rosentreter (2008 Internet)

  26. Bellemerea alpina (Sommerf.) Clauzade & Cl. Roux - Thomson (1997: 115), Rosentreter (2008 Internet)

  27. Bilimbia lobulata (Sommerf.) Hafellner & Coppins - Rosentreter (2008 Internet as Mycobilimbia lobulata)

  28. Blastenia ammiospila (Ach.) Arup, Søchting & Frödén - Rosentreter (2008 Internet as Caloplaca ammiospila)
  29. Blastenia ferruginea (Huds.) A. Massal. - Rosentreter (2008 Internet as Caloplaca ferruginea)
  30. Blastenia fraudans (Th. Fr.) B. de Lesd. - Thomson (1997: 162 as Caloplaca fraudans), Rosentreter (2008 Internet as Caloplaca fraudans)

  31. Blennothallia crispa (Hudson) Otálora, P. M. Jørg. & Wedin - Rosentreter (2008 Internet as Collema crispum)

  32. Brodoa oroarctica (Krog) Goward - Anderegg et al. (1973: 207 erroneously as Hypogymnia intestiniformis), Rosentreter (2008 Internet)

  33. Bryoplaca jungermanniae (Vahl) Søchting, Frödén & Arup - Thomson (1997: 166 as Caloplaca jungermanniae), Rosentreter (2008 Internet as Caloplaca jungermanniae)

  34. Bryoria capillaris (Ach.) Brodo & D. Hawksw. - Thomson (1984: 55), Rosentreter (2008 Internet)
  35. Bryoria fremontii (Tuck.) Brodo & D. Hawksw. - Rosentreter (2008 Internet), Rosentreter (2008 Internet as Bryoria tortuosa)
  36. Bryoria fuscescens (Gyeln.) Brodo & D. Hawksw. - Thomson (1984: 57), Thomson (1984: 59 erroneously as Bryoria lanestris), Rosentreter (2008 Internet erroneously as Bryoria chalybeiformis), Rosentreter (2008 Internet), Rosentreter (2008 Internet erroneously as Bryoria lanestris)
  37. Bryoria glabra (Motyka) Brodo & D. Hawksw. - Thomson (1984: 58), Rosentreter (2008 Internet)
  38. Bryoria pseudofuscescens (Gyeln.) Brodo & D. Hawksw. - Thomson (1984: 63)
  39. Bryoria simplicior (Vain.) Brodo & D. Hawksw. - Thomson (1984: 65), Rosentreter (2008 Internet)
  40. Bryoria trichodes (Michx.) Brodo & D. Hawksw. subsp. trichodes - Thomson (1984: 68), Rosentreter (2008 Internet)

  41. Buellia badia (Fr.) A. Massal. - Rosentreter (2008 Internet)
  42. Buellia dispersa A. Massal. - Rosentreter (2008 Internet)
  43. Buellia elegans Poelt - Rosentreter (2008 Internet)
  44. Buellia epigaea (Hoffm.) Tuck. - Rosentreter (2008 Internet)
  45. Buellia erubescens Arnold - Thomson (1997: 131), Rosentreter (2008 Internet)

  46. Calicium abietinum Pers. - Thomson (1997: 143), Rosentreter (2008 Internet)
  47. Calicium corynellum (Ach.) Ach. - Rosentreter (2008 Internet)
  48. Calicium salicinum Pers. - Thomson (1997: 144) Rosentreter (2008 Internet)
  49. Calicium viride Pers. - Thomson (1997: 146) Rosentreter (2008 Internet)

  50. Calogaya decipiens (Arnold) Arup, Frödén & Søchting - Rosentreter (2008 Internet as Caloplaca decipiens)
  51. Calogaya lobulata (Flörke) Arup, Frödén & Søchting - Rosentreter (2008 Internet as Caloplaca lobulata)

  52. Caloplaca atroalba (Tuck.) Zahlbr. - Rosentreter (2008 Internet)
  53. Caloplaca cerina (Hedw.) Th. Fr. -Thomson (1997: 154), Rosentreter (2008 Internet)
  54. Caloplaca demissa (Flot. ex Körb.) Arup & Grube - Rosentreter (2008 Internet)
  55. Caloplaca epithallina Lynge - Rosentreter (2008 Internet)
  56. Caloplaca saxicola (Hoffm.) Nordin - Thomson (1997: 169), Rosentreter (2008 Internet)
  57. Caloplaca stillicidiorum (Vahl) Lynge - Thomson (1997: 172), Rosentreter (2008 Internet)
  58. Caloplaca subpyraceella (Nyl. ex Hasse) Zahlbr. - Rosentreter (2008 Internet)

  59. Candelaria concolor (Dicks.) Arnold - Rosentreter (2008 Internet)

  60. Candelariella aurella (Hoffm.) Zahlbr. - Thomson (1997: 182), Rosentreter (2008 Internet)
  61. Candelariella citrina B. de Lesd. - Anderegg et al. (1973: 207 as Candelariella terrigena), Thomson (1997: 187 as Candelariella terrigena), Rosentreter (2008 Internet), Rosentreter (2008 Internet as Candelariella terrigena)
  62. Candelariella efflorescens R. C. Harris & W. R. Buck - Rosentreter (2008 Internet)
  63. Candelariella rosulans (Müll. Arg.) Zahlbr. - Anderegg et al. (1973: 207), Rosentreter (2008 Internet)
  64. Candelariella vitellina (Hoffm.) Müll. Arg. - Rosentreter (2008 Internet)

  65. Carbonicola myrmecina (Ach.) Bendiksby & Timdal - Rosentreter (2008 Internet as Hypocenomyce castaneocinerea)

  66. Catapyrenium cinereum (Pers.) Körb. - Rosentreter (2008 Internet)
  67. Catapyrenium lachneum (Ach.) R. Sant. - Thomson (1984: 217 as Dermatocarpon lachneum), Rosentreter (2008 Internet as Placidium lachneum)

  68. Catinaria atropurpurea (Schaer.) Vezda & Poelt - Thomson (1997: 200) - Rosentreter (2008 Internet)

  69. Cetraria aculeata (Schreb.) Fr. - Rosentreter (2008 Internet)

  70. Chaenotheca brunneola (Ach.) Müll. Arg. - Rosentreter (2008 Internet)
  71. Chaenotheca furfuracea (L.) Tibell - Rosentreter (2008 Internet)

  72. Chrysothrix chlorina (Ach.) J. R. Laundon - Rosentreter (2008 Internet)

  73. Circinaria arida Owe-Larsson, A. Nordin & Tibell - Rosentreter (2008 Internet erroneously as Aspicilia desertorum)
  74. Circinaria aspera (Mereschk.) Sohrabi & Senkard. - Rosentreter (2008 as Aspicilia aspera Internet)
  75. Circinaria caesiocinerea (Nyl. ex Malbr.) A. Nordin, Savic & Tibell - Thomson (1997: 65 as Aspicilia caesiocinerea), Rosentreter (2008 Internet as Aspicilia caesiocinerea)
  76. Circinaria calcarea (L.) A. Nordin, Savic & Tibell - Rosentreter (2008 Internet as Aspicilia calcarea)
  77. Circinaria contorta (Hoffm.) A. Nordin, Savic & Tibell - Rosentreter (2008 Internet as Aspicilia contorta)
  78. Circinaria hispida (Mereschk.) A. Nordin, Savic & Tibell - Rosentreter (Checklist as Aspicilia hispida)
  79. Circinaria rogeri (Sohrabi) Sohrabi - Rosentreter (2008 Internet erroneously as Aspicilia fruticulosa)

  80. Cladonia arbuscula (Wallr.) Flot. subsp. arbuscula - Rosentreter (2008 Internet)
  81. Cladonia bacillaris (Ach.) Nyl. - Thomson (1984: 111), Rosentreter (2008 Internet)
  82. Cladonia borealis S. Stenroos - Rosentreter (2008 Internet)
  83. Cladonia cariosa (Ach.) Spreng. - Thomson (1984: 116), Rosentreter (2008 Internet)
  84. Cladonia carneola (Fr.) Fr. - Thomson (1984: 117), Rosentreter (2008 Internet)
  85. Cladonia cenotea (Ach.) Schaer. - Thomson (1984: 118) - Rosentreter (2008 Internet)
  86. Cladonia cervicornis (Ach.) Flot. subsp. cervicornis - Rosentreter (2008 Internet)
  87. Cladonia chlorophaea ( Flörke ex. Sommerf.) Spreng. - Thomson (1984: 119), Rosentreter (2008 Internet)
  88. Cladonia coccifera (L.) Willd. - Rosentreter (2008 Internet)
  89. Cladonia coniocraea (Flörke) Spreng. - Thomson (1984: 122), Rosentreter (2008 Internet)
  90. Cladonia cornuta (L.) Hoffm. subsp. cornuta - Thomson (1984: 124), Rosentreter (2008 Internet)
  91. Cladonia digitata (L.) Hoffm. - Thomson (1984: 131), Rosentreter (2008 Internet)
  92. Cladonia ecmocyna Leight. subsp. ecmocyna - Thomson (1984: 132), Rosentreter (2008 Internet)
  93. Cladonia fimbriata (L.) Fr. - Thomson (1984: 133), Thomson (1984: 144 as Cladonia major), Rosentreter (2008 Internet), Rosentreter (2008 Internet as Cladonia major)
  94. Cladonia furcata (Hudson) Schrad. - Rosentreter (2008 Internet)
  95. Cladonia gracilis (L.) Willd. subsp. gracilis - Rosentreter (2008 Internet)
  96. Cladonia incrassata Flörke - Rosentreter (2008 Internet)
  97. Cladonia mitis Sandst. - Rosentreter (2008 Internet)
  98. Cladonia multiformis G. Merr. - Thomson (1984: 149) - Rosentreter (2008 Internet)
  99. Cladonia ochrochlora Flörke - Rosentreter (2008 Internet)
  100. Cladonia phyllophora Hoffm. - Anderegg et al. (1973: 207), Rosentreter (2008 Internet)
  101. Cladonia pleurota (Flörke) Schaer. - Thomson (1984: 154), Rosentreter (2008 Internet)
  102. Cladonia pocillum (Ach.) O. J. Rich. - Rosentreter (2008 Internet)
  103. Cladonia pyxidata (L.) Hoffm. - Thomson (1984: 158), Rosentreter (2008 Internet)
  104. Cladonia ramulosa (With.) J. R. Laundon - Thomson (1984: 109 as Cladonia anomaea), Rosentreter (2008 Internet as Cladonia anomaea), Rosentreter (2008 Internet)
  105. Cladonia rangiferina (L.) F. H. Wigg. - Rosentreter (2008 Internet)
  106. Cladonia subulata (L.) F. H. Wigg. - Thomson (1984: 168), Rosentreter (2008 Internet)
  107. Cladonia sulphurina (Michx.) Fr. - Rosentreter (2008 Internet)
  108. Cladonia umbricola Tønsberg & Ahti - Rosentreter (2008 Internet)
  109. Cladonia uncialis (L.) Weber ex F. H. Wigg.- Rosentreter (2008 Internet)
  110. Cladonia verruculosa (Vainio) Ahti - Rosentreter (2008 Internet)
  111. Cladonia verticillata (Hoffm.) Schaer. - Anderegg et al. (1973: 207), Rosentreter (2008 Internet)

  112. Clavascidium lacinulatum (Ach.) M. Prieto var. atrans (Breuss) M. Prieto - Rosentreter (2008 Internet as Placidium lacinulatum var. atrans)
  113. Clavascidium lacinulatum (Ach.) M. Prieto var. lacinulatum - xx (xx: xx as Placidium lacinulatum)

  114. Collema curtisporum Degel. - Rosentreter (2008 Internet)
  115. Collema furfuraceum (Arnold) Du Rietz - Rosentreter (2008 Internet)

  116. Chaenotheca furfuracea (L.) Tibell - Thomson (1997: 210 as Coniocybe furfuracea), Rosentreter (2008 Internet as Coniocybe furfuracea)

  117. Cyphelium inquinans (Sm. in Sm. & Sow.) Trevisan - Thomson (1997: 212), Rosentreter (2008 Internet)
  118. Cyphelium pinicola Tibell - Rosentreter (2008 Internet)
  119. Cyphelium tigillare (Ach.) Ach. - Thomson (1997: 214), Rosentreter (2008 Internet)

  120. Dermatocarpon intestiniforme (Körb.) Hasse - Rosentreter (2008 Internet)
  121. Dermatocarpon lorenzianum Anders - Rosentreter (2008 Internet)
  122. Dermatocarpon luridum (With.) J. R. Laundon - Thomson (1984:213 as Dermatocarpon fluviatile), Rosentreter (2008 Internet), Rosentreter (2008 Internet as Dermatocarpon fluviatile)
  123. Dermatocarpon miniatum (L.) W. Mann - Thomson (1984: 219), Rosentreter (2008 Internet)
  124. Dermatocarpon reticulatum H. Magn. - Rosentreter (2008 Internet)
  125. Dermatocarpon rivulorum (Arnold) Dalla Torre & Sarnth. - Rosentreter (2008 Internet)

  126. Dimelaena oreina (Ach.) Norman - Rosentreter (2008 Internet)
  127. Dimelaena thysanota (Tuck.) Hale & W. L. Culb. - Rosentreter (2008 Internet)

  128. Diploschistes gypsaceus (Ach.) Zahlbr. - Rosentreter (2008 Internet)
  129. Diploschistes muscorum (Scop.) R. Sant. - Thomson (1997: 218), Rosentreter (2008 Internet)
  130. Diploschistes scruposus (Schreb.) Norman - Thomson (1997: 218), Rosentreter (2008 Internet)

  131. Diplotomma alboatrum (Hoffm.) Flot. - Rosentreter (2008 Internet)
  132. Diplotomma epipolium (Ach.) Arnold - Rosentreter (2008 Internet)

  133. Enchylium coccophorum (Tuck.) Otálora, P. M. Jørg. & Wedin - Rosentreter (2008 Internet as Collema coccophorum)
  134. Enchylium substellatum (H. Magn.) P. M. Jørg. - Rosentreter (2008 Internet as Collema tenax var. substellatum)
  135. Enchylium tenax (Sw.) Gray - Rosentreter (2008 Internet as Collema tenax)

  136. Staurothele pulvinata Th. Fr. - Rosentreter (2008 Internet as Endocarpon pulvinatum)
  137. Endocarpon pusillum Hedw. - Rosentreter (2008 Internet)
  138. Endocarpon tortuosum Herre - Rosentreter (2008 Internet)

  139. Ephebe perspinulosa Nyl. - Rosentreter (2008 Internet)

  140. Esslingeriana idahoensis (Essl.) Hale & M. J. Lai - Esslinger (1971: 366 as Cetraria idahoensis), Rosentreter (2008 Internet)

  141. Evernia prunastri (L.) Ach. - Rosentreter (2008 Internet)

  142. Flavoplaca citrina (Hoffm.) Arup, Frödén & Søchting - Rosentreter (2008 Internet as Caloplaca citrina)

  143. Flavopunctelia flaventior (Stirton) Hale - Rosentreter (2008 Internet)
  144. Flavopunctelia soredica (Nyl.) Hale - Rosentreter (2008 Internet)

  145. Fuscopannaria cyanolepra (Tuck.) P. M. Jørg. - Rosentreter (2008 Internet), Rosentreter (2008 as Parmeliella cyanolepra Internet)
  146. Fuscopannaria leucostictoides (Ohlsson) P. M. Jørg. - Rosentreter (2008 Internet)
  147. Fuscopannaria pacifica P. M. Jørg. - Rosentreter (2008 Internet)
  148. Fuscopannaria praetermissa (Nyl.) P. M. Jørg. - Thomson (1984: 320 as Parmeliella praetermissa), Rosentreter (2008 Internet)

  149. Gallowayella fulva (Hoffm.) S. Y. Kondr., Fedorenko, S. Stenroos, Kärnefelt, Elix, J. S. Hur & A. Thell - Rosentreter (2008 as Xanthomendoza fulva Internet)

  150. Glypholecia scabra (Pers.) Müll. Arg. - Rosentreter (2008 Internet)

  151. Gyalolechia bracteata (Hoffm.) A. Massal. subsp. bracteata - Thomson (1997: 228 as Fulgensia bracteata), Rosentreter (2008 Internet as Fulgensia bracteata)

  152. Gyalolechia desertorum (Tomin) Søchting, Frödén & Arup - Rosentreter (2008 Internet as Fulgensia desertorum)
  153. Gyalolechia fulgens (Sw.) Søchting, Frödén & Arup - Rosentreter (2008 Internet as Fulgensia fulgens)

  154. Heppia lutosa (Ach.) Nyl. - Rosentreter (2008 Internet)

  155. Heteroplacidium congestum (Breuss & McCune) Breuss - Rosentreter (2008 Internet)

  156. Ionaspis lacustris (With.) Lutzoni - Thomson (1997: 245 as Hymenelia lacustris), Rosentreter (2008 Internet as Hymenelia lacustris)

  157. Hypocenomyce scalaris (Ach. ex Lilj.) M. Choisy - Thomson (1997: 248), Rosentreter (2008 Internet)

  158. Hypogymnia apinnata Goward & McCune - Rosentreter (2008 Internet)
  159. Hypogymnia austerodes (Nyl.) Räsänen - Rosentreter (2008 Internet)
  160. Hypogymnia enteromorpha (Ach.) Nyl. - Rosentreter (2008 Internet)
  161. Hypogymnia imshaugii Krog - Rosentreter (2008 Internet)
  162. Hypogymnia occidentalis L. Pike - Rosentreter (2008 Internet)
  163. Hypogymnia physodes (L.) Nyl. - Thomson (1984: 241), Rosentreter (2008 Internet)
  164. Hypogymnia rugosa (G. Merr.) L. Pike - Rosentreter (2008 Internet)
  165. Hypogymnia tubulosa (Schaer.) Hav. - Rosentreter (2008 Internet)

  166. Icmadophila ericetorum (L.) Zahlbr. - Thomson (1997: 249), Rosentreter (2008 Internet)

  167. Japewia tornoensis Nyl. - Thomson (1997: 387 as Lecidea tornoensis), Rosentreter (2008 Internet as Lecidea tornoensis)

  168. Kaernefeltia merrillii (Du Rietz) A. Thell & Goward - Rosentreter (2008 Internet)

  169. Lecanora albellula Nyl. - Thomson (1997: 299 as Lecanora piniperda), Rosentreter (2008 Internet as Lecanora piniperda), Rosentreter (2008 Internet)
  170. Lecanora argopholis (Ach.) Ach. - Thomson (1997: 267), Rosentreter (2008 Internet)
  171. Lecanora cenisia Ach. - Thomson (1997: 272), Rosentreter (2008 Internet)
  172. Lecanora chlarotera Nyl. - Thomson (1997: 273), Rosentreter (2008 Internet), Rosentreter (2008 Internet as Lecanora rugosella)
  173. Lecanora circumborealis Brodo & Vitik. - Thomson (1997: 274), Rosentreter (2008 Internet)
  174. Lecanora crenulata Hook. - Rosentreter (2008 Internet)
  175. Lecanora epibryon (Ach.) Ach. - Thomson (1997: 279), Rosentreter (2008 Internet)
  176. Lecanora flowersiana H. Magn. - Rosentreter (2008 Internet)
  177. Lecanora fuscescens (Sommerf.) Nyl. - Thomson (1997: 282), Rosentreter (2008 Internet)
  178. Lecanora garovaglioi (Körb.) Zahlbr. - Rosentreter (2008 Internet)
  179. Lecanora hagenii (Ach.) Ach. - Rosentreter (2008 Internet)
  180. Lecanora intricata (Ach.) Ach. - Thomson (1997: 288), Rosentreter (2008 Internet)
  181. Lecanora muralis (Schreb.) Rabenh. var. muralis - Thomson (1997: 295), Rosentreter (2008 Internet)
  182. Lecanora phaedrophthalma Poelt var. phaedrophthalma - Rosentreter (2008 Internet)
  183. Lecanora phaedrophthalma Poelt var. christoi (W. A. Weber) B. D. Ryan - Rosentreter (2008 Internet)
  184. Lecanora polytropa (Ehrh. in Hoffm.) Rabenh. - Thomson (1997: 299), Rosentreter (2008 Internet)
  185. Lecanora pringlei (Tuck.) I. M. Lamb. - Rosentreter (2008 Internet)
  186. Lecanora pseudomellea B. D. Ryan - Rosentreter (2008 Internet)
  187. Lecanora pulicaris (Pers.) Ach. - Thomson (1997: 301), Rosentreter (2008 Internet)
  188. Lecanora reagens Norman - Rosentreter (2008 Internet)
  189. Lecanora rupicola (L.) Zahlbr. - Thomson (1997: 303), Rosentreter (2008 Internet)
  190. Lecanora salicicola H. Magn. - Thomson (1997: 304), Rosentreter (2008 Internet)
  191. Lecanora subrugosa Nyl. - Thomson (1997: 308), Rosentreter (2008 Internet)
  192. Lecanora symmicta (Ach.) Ach. - Thomson (1997: 309), Rosentreter (2008 Internet)
  193. Lecanora varia (Hoffm.) Ach. - Thomson (1997: 311), Rosentreter (2008 Internet)
  194. Lecanora zosterae (Ach.) Nyl. var. zosterae - Rosentreter (2008 Internet)

  195. Lecidea atrobrunnea (Ram. ex Lam. & DC.) Schaer. subsp. atrobrunnea - Thomson (1997: 327), Rosentreter (2008 Internet)
  196. Lecidea auriculata Th. Fr. subsp. auriculata - Thomson (1997: 329), Rosentreter (2008 Internet)
  197. Lecidea fuscoatra (L.) Ach. - Rosentreter (2008 Internet)
  198. Lecidea laboriosa Müll. Arg. - Rosentreter (2008 Internet)
  199. Lecidea lithophila (Ach.) Ach. - Thomson (1997: 362), Rosentreter (2008 Internet)
  200. Lecidea perlatolica Hertel & Leuckert - Rosentreter (2008 Internet)
  201. Lecidea plana (J. Lahm) Nyl. - Rosentreter (2008 Internet)
  202. Lecidea tessellata Flörke - Thomson (1997: 384), Rosentreter (2008 Internet)

  203. Lecidella carpathica Körb. - Thomson (1997: 395), Rosentreter (2008 Internet)
  204. Lecidella elaeochroma (Ach.) M. Choisy - Thomson (1997: 396), Rosentreter (2008 Internet)
  205. Lecidella euphorea (Flörke) Hertel - Thomson (1997: 398), Rosentreter (2008 Internet)
  206. Lecidella patavina (A. Massal.) Knoph & Leuckert - Thomson (1997: 399 as Lecidella inamoena), Rosentreter (2008 Internet as Lecidella inamoena)Rosentreter (2008 Internet)
  207. Lecidella stigmatea (Ach.) Hertel & Leuck. - Thomson (1997: 402), Rosentreter (2008 Internet)

  208. Lecidoma demissum (Rutstr.) Gotth. Schneider & Hertel - Rosentreter (2008 Internet)

  209. Lepraria finkii (B. de Lesd.) R. C. Harris - Rosentreter (2008 Internet erroneously as Lepraria lobificans)
  210. Lepraria membranacea (Dicks.) Vain.- Rosentreter (2008 Internet)
  211. Lepraria neglecta (Nyl.) Lettau - Anderegg et al. (1973: 207), Rosentreter (2008 Internet), Rosentreter (2008 Internet as Lepraria alpina), Rosentreter (2008 Internet as Lepraria caesioalba)
  212. Lepraria subalbicans (I. M. Lamb) Lendemer & Hodkinson - Rosentreter (2008 Internet as Leprocaulon subalbicans)

  213. Lepraria vouauxii (Hue) R. C. Harris - Rosentreter (2008 Internet)

  214. Leptochidium albociliatum (Desm.) M. Choisy - Rosentreter (2008 Internet)

  215. Leptogium burnetiae C. W. Dodge - Rosentreter (2008 Internet)
  216. Leptogium pseudofurfuraceum P. M. Jørg. & Wallace - Rosentreter (2008 Internet)
  217. Leptogium saturninum (Dicks.) Nyl. - Rosentreter (2008 Internet)

  218. Letharia columbiana (Nutt.) J. W. Thomson - Rosentreter (2008 Internet)
  219. Letharia vulpina (L.) Hue - Rosentreter (2008 Internet)

  220. Lichinella stipatula Nyl. - Rosentreter (2008 Internet)

  221. Lobaria anthraspis (Ach.) T. Sprib. & McCune - Rosentreter (2008 Internet as Pseudocyphellaria anthraspis)
  222. Lobaria hallii (Tuck.) Zahlbr. - Thomson (1984: 266), Rosentreter (2008 Internet)
  223. Lobaria pulmonaria - Rosentreter (2008 Internet)
  224. Lobaria scrobiculata - Rosentreter (2008 Internet)

  225. Lobothallia alphoplaca (Wahlenb. in Ach.) Hafellner - Thomson (1997: 59 as Aspicilia alphoplaca), Rosentreter (2008 Internet)
  226. Lobothallia praeradiosa (Nyl.) Hafellner - Rosentreter (2008 Internet)
  227. Lobothallia radiosa (Hoffm.) Hafellner - Rosentreter (2008 Internet)

  228. Lopadium pezizoideum (Ach.) Körb. - Thomson (1997: 411), Rosentreter (2008 Internet)

  229. Massalongia carnosa (Dicks.) Körb. - Rosentreter (2008 Internet)
  230. Massalongia microphylliza (Nyl.) Henssen - Rosentreter (2008 Internet)

  231. Megaspora verrucosa (Ach.) Hafellner & V. Wirth - Anderegg et al. (1973: 207 as Lecanora verrucosa), Rosentreter (2008 Internet), Rosentreter (2008 Internet as Lecanora verrucosa)

  232. Melanelia commixta (Nyl.) A. Thell - Rosentreter (2008 Internet)
  233. Melanelia hepatizon (Ach.) A. Thell - Rosentreter (2008 Internet)

  234. Melanelixia fuliginosa (Fr. ex Duby) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Thomson (1984: 303 as Parmelia glabratula), Rosentreter (2008 Internet)
  235. Melanelixia subargentifera (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Rosentreter (2008 Internet)
  236. Melanelixia subaurifera (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Thomson (1984: 316 as Parmelia subaurifera), Rosentreter (2008 Internet)

  237. Melanohalea elegantula (Zahlbr.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Thomson (1984: 300 as Parmelia elegantula), Rosentreter (2008 Internet)
  238. Melanohalea exasperatula (Nyl.) O. Blanco et al. - Thomson (1984: 300 as Parmelia exasperatula), Rosentreter (2008 Internet)
  239. Melanohalea multispora - Rosentreter (2008 Internet)
  240. Melanohalea subelegantula - Rosentreter (2008 Internet)
  241. Melanohalea subolivacea - Rosentreter (2008 Internet)

  242. Montanelia disjuncta (Erichsen) Divakar, A. Crespo, Wedin - Thomson (1984: 299 as Parmelia disjuncta), Rosentreter (2008 Internet)
  243. Montanelia panniformis (Nyl.) Divakar, A. Crespo, Wedin & Essl. - Thomson (1984: 309 as Parmelia panniformis), Rosentreter (2008 Internet)
  244. Montanelia sorediata (Ach.) Divakar, A. Crespo, Wedin & Essl. - Thomson (1984: 312 as Parmelia sorediosa), Rosentreter (2008 Internet)

  245. Multiclavula mucida (Fr.) R. Petersen - Rosentreter (2008 Internet)
  246. Multiclavula vernalis (Schwein.) R. Petersen - Rosentreter (2008 Internet)

  247. Mycobilimbia berengeriana (A. Massal.) Hafellner & V. Wirth - Thomson (1997: 331 as Lecidea berengeriana), Rosentreter (2008 Internet as Lecidea berengeriana)

  248. Mycoblastus affinis (Schaer.) Schauer - Thomson (1997: 424), Rosentreter (2008 Internet)
  249. Mycoblastus sanguinarius (L.) Norman - Thomson (1997: 426), Rosentreter (2008 Internet)

  250. Myochroidea porphyrospoda (Anzi) Printzen, T. Sprib. & Tønsberg - Rosentreter (2008 Internet as Biatora porphyrospoda)

  251. Nephroma helveticum Ach. subsp. helveticum - Rosentreter (2008 Internet)
  252. Nephroma parile (Ach.) Ach. - Thomson (1984: 282), Rosentreter (2008 Internet)
  253. Nephroma resupinatum (L.) Ach. - Thomson (1984: 283), Rosentreter (2008 Internet)

  254. Nodobryoria abbreviata (Müll. Arg.) Common & Brodo - Rosentreter (2008 Internet)
  255. Nodobryoria oregana (Tuck.) Common & Brodo - Rosentreter (2008 Internet)

  256. Normandina pulchella (Borrer) Nyl. - Rosentreter (2008 Internet)

  257. Ochrolechia androgyna (Hoffm.) Arnold - Thomson (1997: 430), Rosentreter (2008 Internet)
  258. Ochrolechia montana Brodo - Rosentreter (2008 Internet)
  259. Ochrolechia szatalaensis Verseghy - Rosentreter (2008 Internet)
  260. Ochrolechia upsaliensis (L.) A. Massal. - Thomson (1997: 436), Rosentreter (2008 Internet)

  261. Omphalora arizonica (Tuck. ex Willey) T. H. Nash & Hafellner - Rosentreter (2008 Internet)

  262. Ophioparma lapponica (Räsänen) Hafellner & Rogers - Anderegg et al. (1973: 207 as Haematomma lapponicum), Thomson (1997: 440), Rosentreter (2008 Internet as Haematomma lapponicum)
  263. Ophioparma rubricosa (Müll. Arg.) S. Ekman - Rosentreter (2008 Internet)

  264. Oxneria fallax (Arnold) S. Y. Kondr. & Kärnefelt - Thomson (1984: 486 as Xanthoria fallax), Rosentreter (2008 as Xanthomendoza fallax Internet)

  265. Pannaria conoplea (Ach.) Bory - Rosentreter (2008 Internet)

  266. Parmelia barrenoae Divakar, M. C. Molina & A. Crespo - Rosentreter (2008 Internet), Hodkinson et al. (2010: 3)
  267. Parmelia hygrophila Goward & Ahti - Rosentreter (2008 Internet)
  268. Parmelia saxatilis (L.) Ach. - Thomson (1984: 310), Rosentreter (2008 Internet)
  269. Parmelia sulcata Taylor - Thomson (1984: 318), Rosentreter (2008 Internet)

  270. Parmeliopsis ambigua (Wulf.) Nyl. - Thomson (1984: 325), Rosentreter (2008 Internet)
  271. Parmeliopsis hyperopta (Ach.) Arnold - Thomson (1984: 326), Rosentreter (2008 Internet)

  272. Parvoplaca tiroliensis (Zahlbr.) Arup, Søchting & Frödén - Rosentreter (2008 Internet as Caloplaca tiroliensis)

  273. Peccania subnigra (B. de Lesd.) Wetmore - Rosentreter (2008 Internet)

  274. Peltigera aphthosa (L.) Willd. - Thomson (1984: 329), Rosentreter (2008 Internet)
  275. Peltigera britannica (Gyelnik) Holt.-Hartw. & Tønsberg - Rosentreter (2008 Internet)
  276. Peltigera canina (L.) Willd. - Rosentreter (2008 Internet)
  277. Peltigera collina (Ach.) Schrad. - Thomson (1984: 334), Rosentreter (2008 Internet)
  278. Peltigera didactyla (With.) J.R. Laundon - Thomson (1984: 332 as Parmelia canina f. sorediata), Rosentreter (2008 as Parmelia canina f. sorediata Internet), Rosentreter (2008 Internet)
  279. Peltigera horizontalis - Rosentreter (2008 Internet)
  280. Peltigera lepidophora - Rosentreter (2008 Internet)
  281. Peltigera leucophlebia (Nyl.) - Thomson (1984: 330 as Peltigera aphthosa var. leucophlebia), Rosentreter (2008 Internet)
  282. Peltigera malacea (Ach.) Funck. - Thomson (1984: 339), Rosentreter (2008 Internet)
  283. Peltigera membranacea (Ach.) Nyl. - Thomson (1984: 340), Rosentreter (2008 Internet)
  284. Peltigera neckeri Hepp ex Müll. Arg. - Rosentreter (2008 Internet)
  285. Peltigera neopolydactyla (Gyeln.) Gyeln. - Rosentreter (2008 Internet)
  286. Peltigera polydactylon (Neck.) Hoffm. - Thomson (1984: 343), Rosentreter (2008 Internet)
  287. Peltigera rufescens (Weiss) Humb. - Thomson (1984: 333 as Peltigera canina var. rufescens), Rosentreter (2008 Internet)
  288. Peltigera venosa (L.) Baumg. - Thomson (1984: 345), Rosentreter (2008 Internet)

  289. Peltula euploca (Ach.) Poelt ex Pišút - Rosentreter (2008 Internet)
  290. Peltula patellata (Bagl.) Swinscow & Krog - Rosentreter (2008 Internet)

  291. Pertusaria carneopallida (Nyl.) Anzi ex Nyl. - Thomson (1997: 451), Rosentreter (2008 Internet)

  292. Phaeophyscia constipata (Nyl.) Moberg - Rosentreter (2008 Internet)
  293. Phaeophyscia endococcina (Körb.) Moberg - Anderegg et al. (1973: 207 as Physcia endococcinea), Thomson (1984: 348), Rosentreter (2008 Internet), Rosentreter (2008 Internet as Physcia endococcinea)
  294. Phaeophyscia nigricans (Flörke) Moberg - Rosentreter (2008 Internet)
  295. Phaeophyscia orbicularis (Neck.) Moberg - Rosentreter (2008 Internet)
  296. Phaeophyscia sciastra (Ach.) Moberg - Thomson (1984: 349), Rosentreter (2008 Internet)

  297. Phaeorrhiza nimbosa (Fr.) H. Mayrhofer & Poelt - Rosentreter (2008 Internet)
  298. Phaeorrhiza sareptana (Tomin) H. Mayrhofer & Poelt - Rosentreter (2008 Internet)

  299. Physcia adscendens H. Olivier - Thomson (1984: 352), Rosentreter (2008 Internet)
  300. Physcia aipolia (Ehrh. ex Humb.) Fürnr. - Thomson (1984: 353), Rosentreter (2008 Internet)
  301. Physcia caesia (Hoffm.) Hampe ex Fürnr. - Thomson (1984: 354), Rosentreter (2008 Internet)
  302. Physcia dimidiata (Arnold) Nyl. - Rosentreter (2008 Internet)
  303. Physcia dubia (Hoffm.) Lettau - Thomson (1984: 355), Rosentreter (2008 Internet)
  304. Physcia magnussonii Frey - Esslinger (1979: 212 First record for North America), Rosentreter (2008 Internet)
  305. Physcia phaea (Tuck.) J.W. Thomson - Thomson (1984: 355), Rosentreter (2008 Internet)
  306. Physcia stellaris (L.) Nyl. - Anderegg et al. (1973: 207), Rosentreter (2008 Internet)
  307. Physcia tenella (Scop.) DC. - Rosentreter (2008 Internet)

  308. Physconia americana Essl. - Esslinger (1994: 91 Type in Durham, North Carolina, USA DUKE)
  309. Physconia detersa (Nyl.) Poelt - Thomson (1984: 359), Rosentreter (2008 Internet)
  310. Physconia enteroxantha (Nyl.) Poelt - Rosentreter (2008 Internet)
  311. Physconia isidiigera (Zahlbr.) Essl. - Rosentreter (2008 Internet)
  312. Physconia muscigena (Ach.) Poelt - Thomson (1984: 360), Rosentreter (2008 Internet)

  313. Pilophorus acicularis (Ach.) Th. Fr. - Rosentreter (2008 Internet)

  314. Placidium squamulosum (Ach.) Breuss - Rosentreter (2008 Internet)

  315. Placopsis gelida (L.) Lindsay - Thomson (1997: 472), Rosentreter (2008 Internet)

  316. Placynthiella icmalea (Ach.) Coppins & P. James - Rosentreter (2008 Internet)
  317. Placynthiella oligotropha (J. R. Laudon) Coppins & James - Thomson (1997: 474), Rosentreter (2008 Internet)
  318. Placynthiella uliginosa (Schrad.) Coppins & James - Thomson (1997: 475), Rosentreter (2008 Internet)

  319. Placynthium nigrum (Hudson) Gray - Rosentreter (2008 Internet)

  320. Platismatia glauca (L.) C. F. Culb. & W. L. Culb. - Müller (1889: 364 as Cetraria glauca), Cooke (1955: 142 as Cetraria glauca), Cooke (1955: 144 as Cetraria glauca f. corralloidea), Culberson & Culberson (1968: 536), Thomson (1984: 368), Schroeder et al. (1975: 34), Rosentreter (2008 Internet)
  321. Platismatia stenophylla (Tuck.) W. L. Culb. & C. F. Culb. - Rosentreter (2008 Internet)

  322. Pleopsidium chlorophanum (Wahlenb.) Zopf - Rosentreter (2008 Internet)

  323. Polycauliona candelaria (L.) Frödén, Arup & Søchting - Thomson (1984: 483 as Xanthoria candelaria), Rosentreter (2008 Internet as Xanthoria candelaria)
  324. Polycauliona luteominia (Tuck.) Arup, Frödén & Søchting var. luteominia - Rosentreter (2008 Internet as Caloplaca luteominia)
  325. Polycauliona polycarpa (Hoffm.) Frödén, Arup & Søchting - Thomson (1984: 487 as Xanthoria polycarpa), Rosentreter (2008 Internet as Xanthoria polycarpa)

  326. Polychidium muscicola (Sw.) Gray - Thomson (1984: 370), Rosentreter (2008 Internet)

  327. Porpidia crustulata (Ach.) Hertel & Knoph - Rosentreter (2008 Internet)
  328. Porpidia rugosa (Taylor) Coppins & Fryday - Rosentreter (2008 Internet as Porpidia glaucophaea)

  329. Protopannaria pezizoides (Weber) P. M. Jørg. & S. Ekman - Rosentreter (2008 Internet)

  330. Pseudephebe minuscula (Nyl. ex Arnold) Brodo & D. Hawksw. - Thomson (1984: 373), Rosentreter (2008 Internet)
  331. Pseudephebe pubescens (L.) M. Choisy - Rosentreter (2008 Internet)

  332. Psora cerebriformis W. A. Weber - Rosentreter (2008 Internet)
  333. Psora crenata (Taylor) Reinke - Rosentreter (2008 Internet)
  334. Psora decipiens (Hedwig) Hoffm. - Thomson (1997: 507), Rosentreter (2008 Internet)
  335. Psora globifera (Ach.) A. Massal. - Thomson (1997: 508), Rosentreter (2008 Internet)
  336. Psora himalayana (Church. Bab.) Timdal - Thomson (1997: 507), Rosentreter (2008 Internet)
  337. Psora luridella (Tuck.) Fink - Rosentreter (2008 Internet)
  338. Psora montana Timdal - Rosentreter (2008 Internet)
  339. Psora nipponica (Zahlbr.) Gotth. Schneider - Thomson (1997: 510), Rosentreter (2008 Internet)
  340. Psora rubiformis (Ach.) Hook. - Rosentreter (2008 Internet)
  341. Psora tuckermanii R. A. Anderson ex Timdal - Rosentreter (2008 Internet)

  342. Psoroma hypnorum (Vahl) Gray - Thomson (1984: 375), Rosentreter (2008 Internet)

  343. Psorotichia nigra H. Magn. - Rosentreter (2008 Internet)

  344. Ramalina dilacerata (Hoffm.) Hoffm. - Rosentreter (2008 Internet)
  345. Ramalina obtusata (Arnold) Bitter - Rosentreter (2008 Internet)
  346. Ramalina subleptocarpha Rundel & Bowler - Rosentreter (2008 Internet)
  347. Ramalina thrausta (Ach.) Nyl. - Rosentreter (2008 Internet)

  348. Ramboldia cinnabarina (Sommerf.) Kalb, Lumbsch & Elix - Thomson (1997: 336 as Lecidea cinnabarina), Rosentreter (2008 Internet as Lecidea cinnabarina), Rosentreter (2008 as Pyrrhospora cinnabarina Internet)
  349. Ramboldia gowardiana (T. Sprib. & M. Hauck) Kalb, Lumbsch & Elix - Spribille & Hauck (2003: 560 as Pyrrhospora gowardiana), Rosentreter (2008 as Pyrrhospora gowardiana Internet)

  350. Rhizocarpon bolanderi (Tuck.) Herre - Rosentreter (2008 Internet)
  351. Rhizocarpon cookeanum H. Magn. - Runemark (1956: 87 Protologue) Type in Magnusson)
  352. Rhizocarpon effiguratum - Rosentreter (2008 Internet)
  353. Rhizocarpon eupetraeum (Nyl.) Arnold - Thomson (1997: 533), Rosentreter (2008 Internet)
  354. Rhizocarpon geminatum - Rosentreter (2008 Internet)
  355. Rhizocarpon geographicum (L.) DC. - Thomson (1997: 538), Rosentreter (2008 Internet)
  356. Rhizocarpon grande (Flörke ex Flot.) Arnold - Thomson (1997: 539), Rosentreter (2008 Internet)
  357. Rhizocarpon macrosporum Räsänen - Anderegg et al. (1973: 207), Rosentreter (2008 Internet)
  358. Rhizocarpon malenconianum - Rosentreter (2008 Internet)
  359. Rhizocarpon riparium Räsänen - Thomson (1997: 548), Rosentreter (2008 Internet)
  360. Rhizocarpon superficiale (Schaer.) Vain. - Thomson (1997: 551), Rosentreter (2008 Internet)

  361. Rhizoplaca chrysoleuca (Sm.) Zopf - Thomson (1997: 554), Rosentreter (2008 Internet)
  362. Rhizoplaca haydenii (Tuck.) W. A. Weber subsp. haydenii - Rosentreter (2008 Internet)
  363. Rhizoplaca haydenii (Tuck.) W. A. Weber subsp. arbuscula Rosentreter - Rosentreter (2008 Internet)
  364. Rhizoplaca idahoensis Rosentreter & McCune - McCune & Rosentreter (2007: 91 Type in OSC), Rosentreter (2008 Internet)
  365. Rhizoplaca melanophthalma (Ramond) Leuck. & Poelt subsp. melanophthalma - Thomson (1997: 555), Rosentreter (2008 Internet)
  366. Rhizoplaca melanophthalma (Ramond) Leuck. & Poelt subsp. cerebriformis Rosentreter & B. D. Ryan - Rosentreter (2008 Internet)
  367. Rhizoplaca melanophthalma (Ramond) Leuck. & Poelt subsp. crispa Rosentreter & B. D. Ryan - Rosentreter (2008 Internet)
  368. Rhizoplaca peltata (Ramond) Leuckert & Poelt - Thomson (1997: 555), Rosentreter (2008 Internet)
  369. Rhizoplaca polymorpha S. D. Leav., Fern.-Mend., Lumbsch, Sohrabi & St. Clair - Leavitt et al. (2013: 11 Type in Provo, Utah BRY)

  370. Rinodina archaea (Ach.) Arnold - Thomson (1997: 560), Rosentreter (2008 Internet)
  371. Rinodina bischoffii (Hepp) A. Massal. - Rosentreter (2008 Internet)
  372. Rinodina freyi H. Magn. - Rosentreter (2008 as Rinodina glauca Internet)
  373. Rinodina hallii Tuck. - Rosentreter (2008 Internet)
  374. Rinodina juniperina Sheard - Rosentreter (2008 Internet)
  375. Rinodina lobulata H. Mayrhofer & Sheard - Rosentreter (2008 Internet)
  376. Rinodina terrestris Tomin - Thomson (1997: 568 as Rinodina mucronatula), Rosentreter (2008 as Rinodina mucronatula Internet)

  377. Romjularia lurida (Ach.) Timdal - Thomson (1997: 509 as Psora lurida), Rosentreter (2008 Internet), Rosentreter (2008 as Mycobilimbia lurida Internet)

  378. Rufoplaca arenaria (Pers.) Arup, Søchting & Frödén - Rosentreter (2008 Internet as Caloplaca arenaria)

  379. Rusavskia elegans (Link) S. Y. Kondr. & Kärnefelt - Rosentreter (2008 Internet as Xanthoria elegans)

  380. Sagedia mastrucata (Wahlenb.) A. Nordin, Savic & Tibell - Rosentreter (2008 Internet as Aspicilia mastrucata)

  381. Sarcogyne mitziae K. Knudsen, Kocourk. & McCune - Knudsen et al. (2013: 122), Rosentreter (2008 Internet)

  382. Scytinium cellulosum (P. M. Jørg. & Tønsberg) Otálora, P. M. Jørg. & Wedin - Rosentreter (2008 Internet as Leptogium cellulosum)
  383. Scytinium intermedium (Arnold) Otálora, P. M. Jørg. & Wedin - Rosentreter (2008 Internet as Leptogium intermedium)
  384. Scytinium lichenoides (L.) Otálora, P. M. Jørg. & Wedin - Rosentreter (2008 as Leptogium lichenoides Internet)
  385. Scytinium palmatum (Huds.) Gray - Thomson (1984: 260 as Leptogium palmatum), Rosentreter (2008 as Leptogium palmatum Internet)
  386. Scytinium subtile (Schrad.) Otálora, P. M. Jørg. & Wedin- Rosentreter (2008 as Leptogium subtile Internet)
  387. Scytinium tenuissimum (Hoffm.) Otálora, P. M. Jørg. & Wedin - Rosentreter (2008 as Leptogium tenuissimum Internet)

  388. Seirophora contortuplicata (Ach.) Frödén - Rosentreter (2008 Internet)

  389. Solorina crocea (L.) Ach. - Thomson (1984: 387), Rosentreter (2008 Internet)
  390. Solorian spongiosa (Ach.) Anzi - Rosentreter (2008 Internet)

  391. Sphaerophorus globosus (Huds.) Vain. - Anderegg et al. (1973: 207), Rosentreter (2008 Internet)

  392. Spilonema revertens Nyl. - Rosentreter (2008 Internet)

  393. Staurothele areolata (Ach.) Lettau - Thomson (1997: 592), Rosentreter (2008 Internet)
  394. Staurothele clopimoides (Bagl. & Carestia) J. Steiner - Rosentreter (2008 Internet)
  395. Staurothele drummondii (Tuck.) Tuck. - Thomson (1997: 595), Rosentreter (2008 Internet)
  396. Staurothele fissa (Tayler) Zwackh. - Thomson (1997: 596), Rosentreter (2008 Internet)
  397. Staurothele monicae (Zahlbr.) Wetmore - Rosentreter (2008 Internet)
  398. Staurothele rugosa J. W. Thomson - Rosentreter (2008 Internet)

  399. Stereocaulon glareosum (Savicz) H. Magn. - Rosentreter (2008 Internet)
  400. Stereocaulon paschale (L.) Hoffm. - Rosentreter (2008 Internet)
  401. Stereocaulon tomentosum Fr. - Rosentreter (2008 Internet)

  402. Tephromela atra (Huds.) Hafellner - Thomson (1997: 633), Rosentreter (2008 Internet)

  403. Tetramelas papillatus (Sommerf.) Kalb - Thomson (1997: 136 as Buellia papillata), Rosentreter (2008 Internet as Buellia papillata)
  404. Tetramelas terricolus (A. Nordin) Kalb - Thomson (1997: 133 erroneously as Buellia geophila), Rosentreter (2008 erroneously as Tetramelas geophila Internet), Rosentreter (2008 Internet as Buellia terricola)

  405. Thamnolia vermicularis (Sw.) Ach. ex Schaer. - Rosentreter (2008 Internet)

  406. Thelenella muscorum (Fr.) Vain. var. muscorum - Rosentreter (2008 Internet)
  407. Thelenella muscorum (Fr.) Vain. var. octospora (Nyl.) Coppins & Fryday - Rosentreter (2008 Internet)

  408. Thelomma ocellatum (Körb.) Tibell - Rosentreter (2008 Internet)

  409. Thrombium epigaeum (Pers.) Wallr. - Rosentreter (2008 Internet)

  410. Toninia candida (Weber) Th. Fr. - Rosentreter (2008 Internet)
  411. Toninia ruginosa (Tuck.) Herre - Rosentreter (2008 Internet)
  412. Toninia sedifolia (Scop.) Timdal - Thomson (1997: 614 as Toninia caeruleonigricans), Rosentreter (2008 as Toninia caeruleonigricans Internet), Rosentreter (2008 Internet)
  413. Toninia squalida (Schleicher ex Ach.) A. Massal. - Thomson (1997: 619), Rosentreter (2008 Internet)
  414. Toninia tristis (Th. Fr.) Th. Fr. subsp. asiae-centralis (H. Magn.) Timdal - Rosentreter (2008 Internet)

  415. Trapeliopsis bisorediata McCune & Camacho - Rosentreter (2008 Internet)
  416. Trapeliopsis glaucopholis (Nyl. ex Hasse) Printzen & McCune - Rosentreter (2008 Internet)
  417. Trapeliopsis granulosa (Hoffm.) Lumbsch - Thomson (1997: 624), Rosentreter (2008 Internet)
  418. Trapeliopsis steppica McCune & Camacho - Rosentreter (2008 Internet)
  419. Trapeliopsis viridescens (Schrad.) Coppins & P. James - Thomson (1997: 625), Rosentreter (2008 Internet)

  420. Tremolecia atrata (Ach.) Hertel - Rosentreter (2008 Internet)

  421. Tuckermanopsis chlorophylla (Willd.) Hale - Thomson (1984: 73 as Cetraria chlorophylla), Rosentreter (2008 Internet)
  422. Tuckermanopsis orbata (Nyl.) M. J. Lai - Rosentreter (2008 Internet)
  423. Tuckermanopsis platyphylla (Tuck.) Hale - Rosentreter (2008 Internet)

  424. Umbilicaria americana Poelt & T. H. Nash - Rosentreter (2008 Internet)
  425. Umbilicaria angulata Tuck. - Thomson (1984: 442), Rosentreter (2008 Internet)
  426. Umbilicaria hyperborea (Ach.) Hoffm. var. hyperborea - Thomson (1984: 453), Rosentreter (2008 Internet)
  427. Umbilicaria phaea Tuck. - Thomson (1984: 455), Rosentreter (2008 Internet)
  428. Umbilicaria polaris (Schol.) Zahlbr. - Thomson (1984: 289 erroneously as Omphalodiscus virginis), Rosentreter (2008 Internet erroneously as Umbilicaria krascheninnikovii)
  429. Umbilicaria polyphylla (L.) Baumg. - Thomson (1984: 457), Rosentreter (2008 Internet)
  430. Umbilicaria polyrrhiza (L.) Fr. - Thomson (1984: 27 as Actinogyra polyrrhiza), Rosentreter (2008 Internet)
  431. Umbilicaria torrefacta (Lightf.) Schrad. - Thomson (1984: 459), Rosentreter (2008 Internet)
  432. Umbilicaria vellea (L.) Ach. - Thomson (1984: 460), Rosentreter (2008 Internet)
  433. Umbilicaria virginis Schaer. - Thomson (1984: 290 as Omphalodiscus virginis), Rosentreter (2008 Internet)

  434. Usnea dasopoga (Ach.) Röhl. - Thomson (1984: 465), Rosentreter (2008 Internet), Rosentreter (2008 as Usnea filipendula Internet)
  435. Usnea subfloridana Stirt. - Thomson (1984: 469), Rosentreter (2008 Internet)
  436. Usnea substerilis Mot. - Thomson (1984: 470), Rosentreter (2008 Internet)

  437. Vahliella leucophaea (Vahl) P. M. Jørg. - Rosentreter (2008 Internet)

  438. Variolaria amara Ach. - Rosentreter (2008 as Pertusaria amara Internet)
  439. Variolaria ophthalmiza (Nyl.) Darb. - Rosentreter (2008 as Pertusaria ophthalmiza Internet)

  440. Verrucaria viridula (Schrad.) Ach. - Rosentreter (2008 Internet)

  441. Vulpicida canadensis (Räsänen) J.-E. Mattsson & M. J. Lai - Rosentreter (2008 Internet)

  442. Xanthocarpia lactea (A. Massal.) A. Massal. - Rosentreter (2008 Internet as Caloplaca lactea)
  443. Xanthocarpia tominii Savicz ex Frödén, Arup & Søchting - Thomson (1997: 174 as Caloplaca tominii), Rosentreter (2008 Internet as Caloplaca tominii)

  444. Xanthomendoza galericulata L. Lindblom - Lindblom (2006: 2 Protologue) Type
  445. Xanthomendoza hasseana (Räsänen) Søchting, Kärnefelt & S. Y. Kondr. - Rosentreter (2008 Internet)
  446. Xanthomendoza mendozae (Räsänen) S. Y. Kondr. & Kärnefelt - Rosentreter (2008 Internet)
  447. Xanthomendoza montana (L. Lindblom) Søchting, Kärnefelt & S. Y. Kondr. - Rosentreter (2008 Internet)
  448. Xanthomendoza oregana (Gyelnik) Søchting, Kärnefelt & S. Y. Kondr.- Rosentreter (2008 Internet)
  449. Xanthomendoza trachyphylla (Tuck.) Frödén, Arup & Søchting - Rosentreter (2008 Internet as Caloplaca trachyphylla)

  450. Xanthoparmelia angustiphylla (Gyeln.) Hale - Anderegg et al. (1973: 207 as Parmelia hypopsila), Rosentreter (2008 Internet)
  451. Xanthoparmelia camtschadalis (Ach.) Hale - Rosentreter (2008 Internet)
  452. Xanthoparmelia chlorochroa (Tuck.) Hale - Thomson (1984: 475), Rosentreter (2008 Internet)
  453. Xanthoparmelia coloradoensis (Ach.) Hale - Rosentreter (2008 Internet)
  454. Xanthoparmelia conspersa (Ehrh. ex Ach.) Hale - Rosentreter (2008 Internet)
  455. Xanthoparmelia cumberlandia (Gyeln.) Hale - Anderegg et al. (1973: 207 as Parmelia cumberlandia), Rosentreter (2008 Internet)
  456. Xanthoparmelia idahoensis Hale - Hale (1989: 547 Type in ), Rosentreter (2008 Internet)
  457. Xanthoparmelia loxodes (Nyl.) O. Blanco, A. Crespo, Elix, D. Hawksw. & Lumbsch - Rosentreter (2008 Internet as Neofuscelia loxodes)
  458. Xanthoparmelia mexicana (Gyeln.) Hale - Anderegg et al. (1973: 207 as Parmelia mexicana), Rosentreter (2008 Internet)
  459. Xanthoparmelia neochlorochroa Hale - Rosentreter (2008 Internet)
  460. Xanthoparmelia neowyomingica - Rosentreter (2008 Internet)
  461. Xanthoparmelia norchlorochroa Hale - Rosentreter (2008 Internet)
  462. Xanthoparmelia novomexicana (Gyeln.) Hale - Anderegg et al. (1973: 207 as Parmelia arseneana), Rosentreter (2008 Internet)
  463. Xanthoparmelia plittii (Gyeln.) Hale - Anderegg et al. (1973: 207 as Parmelia plittii), Rosentreter (2008 Internet)
  464. Xanthoparmelia subhosseana (Essl.) O. Blanco, A. Crespo, Elix, D. Hawksw. & Lumbsch - Rosentreter (2008 Internet as Neofuscelia subhosseana)
  465. Xanthoparmelia vagans (Nyl.) Hale - Rosentreter (2008 Internet)
  466. Xanthoparmelia verruculifera (Nyl.) O. Blanco, A. Crespo, Elix, D. Hawksw. & Lumbsch - Rosentreter (2008 Internet as Neofuscelia verruculifera)
  467. Xanthoparmelia wyomingica (Gyeln.) Hale - Rosentreter (2008 Internet)

  468. Xylographa parallela (Ach.: Fr.) Fr. - Rosentreter (2008 Internet)

  469. Xylopsora friesii - Rosentreter (2008 Internet as Hypocenomyce friesii)