Checklist of lichens of Illinois (USA)
Version 31 December 2017

 

  1. Acarospora americana H. Magn. - Magnusson (1929: 198 Type in UPS), Magnusson (1929: 205 as Acarospora cinereoalba Type in New York, USA NY)

  2. Amandinea punctata (Hoffm.) Coppins & Scheid. - Skorepa (1970: 78)

  3. Anaptychia palmulata (Michx.) Vain. - Wilhelm & Ladd (1985: 213)

  4. Anisomeridium biforme (Borrer) R. C. Harris - Skorepa (1970: 78 as Arthopyrenia biformis), Wilson & Methven (1997: 450)
  5. Anisomeridium polypori (Ellis & Everh.) M. E. Barr - McKnight et al. (1987: 26 as Anisomeridium nyssaegenum)

  6. Anzia colpodes (Ach.) Stizenb. - Skorepa & Snider (1967: 105), Wilhelm & Ladd (1985: 213)

  7. Bacidina inundata (Fr.) Vezda - Skorepa (1970: 78 as Bacidia inundata)

  8. Buellia erubescens Arnold - Wilson & Methven (1997: 450 as Buellia stillingiana)

  9. Caloplaca cerina (Ehrh. ex Hedw.) Th. Fr. - Wilson & Methven (1997: 450)
  10. Caloplaca microphyllina (Tuck.) Hasse - Skorepa (1970: 78)

  11. Candelaria concolor (Dicks.) B. Stein - Skorepa (1970: 78), Wilhelm & Ladd (1985: 213), Wilhelm & Lampa (1987: 46), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
  12. Candelaria fibrosa (Fr.) Müll. Arg. - Skorepa & Snider (1967: 105)

  13. Candelariella efflorescens R. C. Harris & Buck - McKnight et al. (1987: 27)
  14. Candelariella vitellina (Hoffm.) Müll. Arg. - Skorepa (1970: 78 as Candelaria vitellina)
  15. Candelariella xanthostigma (Ach.) Lettau - McKnight et al. (1987: 27), Wilson & Methven (1997: 450)

  16. Canoparmelia caroliniana (Nyl.) Elix & Hale - Skorepa & Snider (1967: 105 as Parmelia caroliniana)
  17. Canoparmelia crozalsiana (B. de Lesd. ex Harm.) Hale - Wilhelm & Ladd (1985: 228 as Pseudoparmelia crozalsiana), Muir & McCune (1988: 365 as Pseudoparmelia crozalsiana)
  18. Canoparmelia texana (Tuck.) Elix & Hale - Czeczuga & Wilhelm (1992: 6)

  19. Cetraria arenaria Kärnefelt - McKnight et al. (1987: 27)

  20. Chrysothrix caesia (Flot.) Ertz & Tehler - Skorepa (1970: 78 as Allarthonia caesia)

  21. Ciposia wheeleri (R. C. Harris) Marbach - Wilson & Methven (1997: 450 as Buellia wheeleri)

  22. Cladonia apodocarpa Robb. - Wilhelm & Ladd (1985: 215)
  23. Cladonia atlantica Evans - Skorepa & Snider (1967: 105), Wilhelm & Ladd (1985: 215)
  24. Cladonia bacillaris (Ach.) Nyl. - Wilhelm & Ladd (1985: 215), Wilhelm & Lampa (1987: 47)
  25. Cladonia caespiticia (Pers.) Flörke - Skorepa (1970: 78), Wilhelm & Ladd (1985: 216)
  26. Cladonia peziziformis (Michx.) Spreng. - Wilhelm & Ladd (1985: 216 as Cladonia capitata)
  27. Cladonia cariosa (Ach.) Spreng. - Wilhelm & Ladd (1985: 216)
  28. Cladonia caroliniana (Schwein.) Tuck. - Wilhelm & Ladd (1985: 216), Czeczuga & Wilhelm (1992: 6)
  29. Cladonia cervicornis (Ach.) Flot. subsp. verticillata (Hoffm.) Ahti - Wilhelm & Lampa (1987: 47)
  30. Cladonia chlorophaea (Flörke) Spreng. - Stotler (1976: 9), Wilhelm & Ladd (1985: 216), Wilhelm & Lampa (1987: 47)
  31. Cladonia coniocraea (Flörke) Spreng. - Wilhelm & Ladd (1985: 216), Wilhelm & Lampa (1987: 47)
  32. Cladonia cristatella Tuck. - Skorepa (1970: 78), Stotler (1976: 9), Wilhelm & Ladd (1985: 217), Wilhelm & Lampa (1987: 47)
  33. Cladonia cryptochlorophaea Asahina - Wilhelm & Lampa (1987: 47)
  34. Cladonia cylindrica (A. Evans) A. Evans - Wilhelm & Lampa (1987: 47), Muir & McCune (1988: 365)
  35. Cladonia decorticata (Flörke) Spreng. - Skorepa (1970: 78)
  36. Cladonia didyma (Fée) Vain. - Wilhelm & Lampa (1987: 48)
  37. Cladonia fimbriata (L.) Fr. - Wilhelm & Lampa (1987: 47)
  38. Cladonia furcata (Huds.) Schrad. - Skorepa (1970: 78), Wilhelm & Ladd (1985: 217), Wilhelm & Lampa (1987: 48), Czeczuga & Wilhelm (1992: 6)
  39. Cladonia grayi G. K. Merr. ex Sandst. - Wilhelm & Lampa (1987: 48), Czeczuga & Wilhelm (1992: 6)
  40. Cladonia homosekikaica Nuno - McKnight et al. (1987: 28)
  41. Cladonia multiformis G. K. Merr. - McKnight et al. (1987: 28), Wilhelm & Lampa (1987: 48)
  42. Cladonia peziziformis (With.) J. R. Laundon - Wilhelm & Lampa (1987: 48)
  43. Cladonia piedmontensis Merr. - Wilhelm & Ladd (1985: 217), Wilhelm & Lampa (1987: 48)
  44. Cladonia pleurota (Flörke) Schaer. - Wilhelm & Ladd (1985: 217), Wilhelm & Lampa (1987: 48)
  45. Cladonia pyxidata (L.) Hoffm. - Skorepa (1970: 78)
  46. Cladonia ramulosa (With.) J. R. Laundon - Wilhelm & Lampa (1987: 48)
  47. Cladonia rangiferina - Stotler (1976: 9)
  48. Cladonia rei Schaer. - Wilhelm & Lampa (1987: 48)
  49. Cladonia robbinsii Evans - Skorepa (1970: 79), Wilhelm & Ladd (1985: 217), Czeczuga & Wilhelm (1992: 6)
  50. Cladonia squamosa (Scop.) Hoffm. - Wilhelm & Ladd (1985: 218), Czeczuga & Wilhelm (1992: 6)
  51. Cladonia strepsilis (Ach.) Grognot - Wilhelm & Ladd (1985: 218), Czeczuga & Wilhelm (1992: 6)
  52. Cladonia subcariosa Nyl. - Stotler (1976: 9 as Cladonia clavulifera), Wilhelm & Ladd (1985: 217 as Cladonia polycarpoides), Wilhelm & Lampa (1987: 48 as Cladonia polycarpoides)
  53. Cladonia subtenuis (Abb.) Evans - Skorepa (1970: 79), Wilhelm & Ladd (1985: 214 as Cladina subtenuis), Wilhelm & Lampa (1987: 46 as Cladina subtenuis), Czeczuga & Wilhelm (1992: 6 as Cladina subtenuis)
  54. Cladonia uncialis (L.) Weber ex F. H. Wigg. - Skorepa (1970: 79), Wilhelm & Ladd (1985: 218)

  55. Coccocarpia palmicola (Tuck.) Vain. - Skorepa & Snider (1967: 105 as Coccocarpia cronia)

  56. Collema flaccidum (Ach.) Ach. - Wilhelm & Ladd (1985: 218)
  57. Collema furfuraceum (Schaer.) Du Rietz - Wilhelm & Ladd (1985: 218)
  58. Collema subflaccidum Degel. - Wilhelm & Ladd (1985: 218)

  59. Chaenotheca furfuracea (L.) Tibell - McKnight et al. (1987: 28 as Coniocybe furfuracea)

  60. Crespoa crozalsiana (B. de Lesd. ex Harm.) Lendemer & Hodkinson - Wilson & Methven (1997: 450 as Canoparmelia crozalsiana)

  61. Cyphelium tigillare (Ach.) Ach. - Skorepa (1970: 79)

  62. Cystocoleus ebeneus (Dillwyn) Thwaites - McKnight et al. (1987: 28)

  63. Dermatocarpon americanum Vain. - Heiðmarsson (2003: 466)
  64. Dermatocarpon miniatum (L.) Mann - Skorepa (1970: 79), Stotler (1976: 9), Wilhelm & Ladd (1985: 219), Wilhelm & Lampa (1987: 48), Basinger et al. (1996: 332)

  65. Dibaeis absoluta (Tuck.) Kalb & Gierl - Skorepa & Snider (1967: 105 as Baeomyces absolutus)

  66. Dimelaena oreina (Ach.) Norman - Skorepa (1970: 80 as Rinodina oreina)

  67. Dirinaria frostii (Tuck.) Hale & W. L. Culb. - Wilhelm & Ladd (1985: 219)

  68. Enchylium conglomeratum Hoffm. - Wilhelm & Ladd (1985: 218 as Collema conglomeratum)

  69. Endocarpon pusillum Hedw. - Skorepa (1970: 79), Basinger et al. (1996: 332)

  70. Evernia mesomorpha Nyl. - McKnight et al. (1987: 28), Wilhelm & Lampa (1987: 49)

  71. Flavoparmelia baltimorensis (Gyeln. & Fóriss) Hale - Wilhelm & Ladd (1985: 228 as Pseudoparmelia baltimorensis), Czeczuga & Wilhelm (1992: 6)
  72. Flavoparmelia caperata (L.) Hale - Skorepa (1970: 79 as Parmelia caperata), Wilhelm & Ladd (1985: 228), Wilhelm & Lampa (1987: 49), Muir & McCune (1988: 365), Czeczuga & Wilhelm (1992: 6), Wilson & Methven (1997: 450)

  73. Flavopunctelia flaventior (Stirt.) Hale - McKnight et al. (1987: 29), Wilhelm & Lampa (1987: 49), Muir & McCune (1988: 365)
  74. Flavopunctelia soredica (Nyl.) Hale - McKnight et al. (1987: 29), Wilhelm & Lampa (1987: 49)

  75. Graphis scripta (L.) Ach. - Skorepa (1970: 79), Wilson & Methven (1997: 450)

  76. Gyalolechia flavovirescens (Wulf.) Søchting, Frödén & Arup - Skorepa (1970: 78 as Caloplaca flavovirescens), Basinger et al. (1996: 332 as Caloplaca flavovirescens)

  77. Heppia lutosa (Ach.) Nyl. - Wilhelm & Lampa (1987: 49)

  78. Heterodermia albicans (Pers.) Swinscow & Krog - Wilhelm & Ladd (1985: 220), Wilson & Methven (1997: 450)
  79. Heterodermia granulifera (Ach.) W. L. Culb. - Wilson & Methven (1997: 450)
  80. Heterodermia obscurata (Nyl.) Trev. - Wilhelm & Ladd (1985: 220), Muir & McCune (1988: 365)
  81. Heterodermia speciosa (Wulf.) Trev. - Skorepa (1970: 79 as Heterodermia tremulans), Wilhelm & Ladd (1985: 220)

  82. Hyperphyscia adglutinata (Sm.) A. L. Sm. - Skorepa (1970: 80 as Physcia elaeina), Wilhelm & Lampa (1987: 49)
  83. Hyperphyscia syncolla (Tuck. ex Nyl.) Kalb - Skorepa (1970: 80), Wilhelm & Ladd (1985: 227 as Physciopsis syncolla), Wilson & Methven (1997: 450)

  84. Hypocenomyce scalaris (Ach.) M. Choisy - McKnight et al. (1987: 28)

  85. Hypogymnia physodes (L.) W. Wats. - Wilhelm & Lampa (1987: 49)

  86. Hypotrachyna livida (Taylor) Hale - Wilhelm & Ladd (1985: 220), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
  87. Hypotrachyna pustulifera (Hale) Skorepa - McKnight et al. (1987: 29)

  88. Lasallia papulosa (Ach.) Llano - Cohen (2002: 521)

  89. Lecanora filamentosa (Stirt.) Elix & Palice - Skorepa (1970: 79 as Lecanora symmicta)
  90. Lecanora hybocarpa (Tuck.) Brodo - Wilson & Methven (1997: 450)
  91. Lecanora hypoptoides (Nyl.) Nyl. - Skorepa & Snider (1967: 105)
  92. Lecanora minutella Nyl. - Skorepa & Snider (1967: 105)
  93. Lecanora strobilina (Spreng.) Kieff. - Wilson & Methven (1997: 450)
  94. Lepra hypothamnolica (Dibben) Lendemer & R. C. Harris - Dibben (1980: 57 as Pertusaria hypothamnolica Type)

  95. Lepraria finkii (B. de Lesd.) R. C. Harris - McKnight et al. (1987: 29 as Lepraria finkii), McKnight et al. (1987: 30 erroneously as Lepraria lobificans)
  96. Lepraria membranacea (Dicks.) Vain. - Stotler (1976: 9)

  97. Leptogium austroamericanum (Malme) C. W. Dodge - Wilhelm & Ladd (1985: 221)
  98. Leptogium cyanescens (Rabenh.) Körb. - Wilhelm & Ladd (1985: 221), Wilhelm & Lampa (1987: 50)
  99. Leptogium hirsutum Sierk - Sierk (1964: 267 Type)
  100. Leptogium milligranum Sierk - Wilhelm & Ladd (1985: 221)

  101. Leptorhaphis atomaria (Ach.) Szat. - McKnight et al. (1987: 31)

  102. Melanelixia subaurifera (Nyl.) O. Blanco et al. - Wilhelm & Lampa (1987: 50 as Parmelia subaurifera)

  103. Myelochroa aurulenta (Tuck.) Elix & Hale - Skorepa (1970: 79 as Parmelia aurulenta), Wilhelm & Ladd (1985: 222 as Parmelina aurulenta), Wilhelm & Lampa (1987: 50 as Parmelina aurulenta), Muir & McCune (1988: 365 as Parmelina aurulenta), Wilson & Methven (1997: 450)
  104. Myelochroa galbina (Ach.) Elix & Hale - Wilhelm & Ladd (1985: 222 as Parmelina galbina), Muir & McCune (1988: 365 as Parmelina galbina), Wilson & Methven (1997: 450)
  105. Myelochroa obsessa (Ach.) Elix & Hale - Wilhelm & Ladd (1985: 223 as Parmelina obsessa)

  106. Myriolecis dispersa (Pers.) Sliwa, Zhao Xin & Lumbsch - Skorepa (1970: 79 as Lecanora dispersa)

  107. Nadvornikia sorediata R. C. Harris - Ladd et al. (1994: 135)

  108. Opegrapha vulgata (Ach.) Ach. - Wilson & Methven (1997: 450)

  109. Parmelia squarrosa Hale - Wilhelm & Lampa (1987: 50)
  110. Parmelia sulcata Taylor - Skorepa (1970: 79 as Parmelia sulcata), Wilhelm & Lampa (1987: 50), Czeczuga & Wilhelm (1992: 6)

  111. Parmotrema cetratum (Ach.) Hale - Muir & McCune (1988: 365)
  112. Parmotrema dilatatum (Vain.) Hale - Skorepa & Snider (1967: 105 as Parmelia dilatata)
  113. Parmotrema eurysacum (Hue) Hale - Wilhelm & Ladd (1985: 223)
  114. Parmotrema hypotropum (Nyl.) Hale - Wilhelm & Ladd (1985: 223), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
  115. Parmotrema madagascariaceum (Hue) Hale - Skorepa & Snider (1967: 105 as Parmelia madagascariacea), Stotler (1976: 9 as Parmelia madagascariacea), Wilhelm & Ladd (1985: 223)
  116. Parmotrema michauxianum (Zahlbr.) Hale - Wilhelm & Ladd (1985: 224)
  117. Parmotrema reticulatum (Taylor) M. Choisy - Wilhelm & Ladd (1985: 224), Wilhelm & Lampa (1987: 50), Wilson & Methven (1997: 450 as Rimelia reticulatum)
  118. Parmotrema tinctorum (Delise ex Nyl.) Hale - Skorepa & Snider (1967: 105)

  119. Peltigera canina (L.) Willd. - Skorepa (1970: 79), Stotler (1976: 9), Wilhelm & Ladd (1985: 224), Wilhelm & Lampa (1987: 51), Czeczuga & Wilhelm (1992: 6)
  120. Peltigera polydactylon (Neck.) Hoffm. - Wilhelm & Ladd (1985: 224)

  121. Phaeophyscia adiastola (Essl.) Essl. - Wilhelm & Ladd (1985: 225), Wilhelm & Lampa (1987: 51), Basinger et al. (1996: 332)
  122. Phaeophyscia cernohorskyi (Nadv.) Essl. - Wilhelm & Ladd (1985: 225), Wilhelm & Lampa (1987: 51), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
  123. Phaeophyscia ciliata (Hoffm.) DR. - Skorepa (1970: 80 as Physcia ciliata), Wilhelm & Lampa (1987: 51), Wilson & Methven (1997: 450)
  124. Phaeophyscia hirtella Essl. - Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
  125. Phaeophyscia imbricata (Vain.) Essl. - Wilhelm & Ladd (1985: 225), Wilhelm & Lampa (1987: 51)
  126. Phaeophyscia leana (Tuck.) Essl. - Skorepa (1984: 257)
  127. Phaeophyscia orbicularis (Neck.) Moberg - Skorepa (1970: 80 as Physcia orbicularis), Wilson & Methven (1997: 450), Wilhelm & Lampa (1987: 51)
  128. Phaeophyscia pusilloides (Zahlbr.) Essl. - Wilhelm & Ladd (1985: 225), Wilhelm & Lampa (1987: 51), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
  129. Phaeophyscia rubropulchra (Degel.) Moberg - Wilhelm & Ladd (1985: 226), Wilhelm & Lampa (1987: 52), Muir & McCune (1988: 365), Czeczuga & Wilhelm (1992: 6), Wilson & Methven (1997: 450)
  130. Phaeophyscia squarrosa Müll. Arg. - Skorepa (1970: 80 erroneously as Physcia lacinulata)

  131. Physcia adscendens (Th. Fr.) H. Oliv. - Wilhelm & Lampa (1987: 52), Czeczuga & Wilhelm (1992: 6)
  132. Physcia aipolia (Ehrh.) Hampe - Skorepa (1970: 79), Wilhelm & Ladd (1985: 226), Muir & McCune (1988: 365)
  133. Physcia americana - Skorepa (1970: 80 erroneously as Physcia tribacoides), Wilhelm & Ladd (1985: 226), Wilhelm & Lampa (1987: 52), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
  134. Physcia millegrana Degel. - Skorepa (1970: 80), Wilhelm & Ladd (1985: 227), Wilhelm & Lampa (1987: 52), Muir & McCune (1988: 365), Czeczuga & Wilhelm (1992: 6), Wilson & Methven (1997: 450)
  135. Physcia phaea (Tuck.) Thoms. - Wilhelm & Ladd (1985: 227)
  136. Physcia stellaris (L.) Nyl. - Skorepa (1970: 80), Wilhelm & Ladd (1985: 227), Wilhelm & Lampa (1987: 52), Muir & McCune (1988: 365), Czeczuga & Wilhelm (1992: 6)
  137. Physcia subtilis Degel. - Wilhelm & Ladd (1985: 227)

  138. Physciella chloantha (Ach.) Essl. - Wilhelm & Ladd (1985: 226 as Physcia chloantha), Wilhelm & Lampa (1987: 52)

  139. Physconia detersa (Nyl.) Poelt - Wilhelm & Ladd (1985: 227), Wilhelm & Lampa (1987: 52), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
  140. Physconia leucoleiptes (Tuck.) Essl. - Wilson & Methven (1997: 450 as Physconia kurokawae)

  141. Placidium arboreum (Schwein. ex E. Michener) Lendemer - Wilhelm & Ladd (1985: 219 as Dermatocarpon tuckermanii)
  142. Placidium lachneum (Ach.) B. de Lesd. - Wilhelm & Ladd (1985: 219 as Dermatocarpon lachneum)

  143. Placynthiella icmalea (Ach.) Coppins & P. James - McKnight et al. (1987: 31)
  144. Placynthiella uliginosa (Schrad.) Coppins & P. James - Skorepa (1970: 79 as Lecidea uliginosa)

  145. Placynthium nigrum (Huds.) S. Gray - Skorepa (1970: 80), Wilhelm & Ladd (1985: 228), Wilhelm & Lampa (1987: 53)

  146. Polycauliona candelaria (L.) Frödén, Arup, & Søchting - Wilhelm & Ladd (1985: 231 as Xanthoria candelaria), Wilhelm & Lampa (1987: 53 as Xanthoria candelaria)
  147. Polycauliona polycarpa (Hoffm.) Frödén, Arup, & Søchting - Wilhelm & Lampa (1987: 53 as Xanthoria polycarpa)

  148. Polysporina simplex (Taylor) Vezda - Skorepa (1970: 80 as Sarcogyne simplex)

  149. Porina salicina Müll. Arg. - Wilson & Methven (1997: 450)

  150. Protoparmeliopsis gyrophorica (Lendemer) S. Y. Kondr. - Knudsen & Lendemer (2009: 23 as Lecanora gyrophorica)
  151. Protoparmeliopsis muralis (Schreb.) M. Choisy - Wilhelm & Ladd (1985: 220 as Lecanora muralis), Wilhelm & Lampa (1987: 50 as Lecanora muralis)

  152. Psora russellii (Tuck.) A. Schneider - Skorepa (1970: 79 as Lecidea russellii)

  153. Psorotichia schaereri (A. Massal.) Arnold - Basinger et al. (1996: 332)

  154. Punctelia bolliana (Müll. Arg.) Krog - Skorepa (1970: 79 as Parmelia bolliana), Wilhelm & Lampa (1987: 53), Czeczuga & Wilhelm (1992: 6)
  155. Punctelia hypoleucites (Nyl.) Krog - Skorepa (1970: 79 as Parmelia hypoleucites), Wilhelm & Ladd (1985: 222 as Parmelia hypoleucites)
  156. Punctelia missouriensis G. Wilh. & Ladd - Wilson & Methven (1997: 450)
  157. Punctelia perreticulata (Räsänen) G. Wilh. & Ladd - Czeczuga & Wilhelm (1992: 6)
  158. Punctelia rudecta (Ach.) Krog - Skorepa (1970: 79 as Parmelia rudecta), Wilhelm & Ladd (1985: 222 as Parmelia rudecta), Wilhelm & Lampa (1987: 53), Muir & McCune (1988: 365), Czeczuga & Wilhelm (1992: 6), Wilson & Methven (1997: 450)

  159. Pyrenocollema prospersella (Nyl.) R. C. Harris - Nylander (1890: 108 as Verrucaria prospersella Type in Helsinki, Finland H-NYL), Zahlbruckner (1921: 288 as Arthopyrenia prospersella), Tucker & Harris (1980: 13)

  160. Pyrenodesmia variabilis (Pers.) A. Massal. - Basinger et al. (1996: 332 as Caloplaca variabilis)

  161. Pyxine caesiopruinosa (Nyl.) Imshaugh - Wilhelm & Ladd (1985: 228), Wilhelm & Lampa (1987: 53), Muir & McCune (1988: 365)
  162. Pyxine sorediata (Ach.) Mont. - Skorepa (1970: 80), Wilhelm & Ladd (1985: 229), Wilhelm & Lampa (1987: 53), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
  163. Pyxine subcinerea Stirton - Wilson & Methven (1997: 450)

  164. Ramalina fastigiata (Pers.) Ach. - Skorepa & Snider (1967: 105)
  165. Ramalina intermedia Nyl. - Skorepa & Snider (1967: 105), Wilhelm & Ladd (1985: 229)
  166. Ramalina unifolia J. W. Thomson - Wilson & Methven (1997: 450)

  167. Rhizoplaca chrysoleuca (Sm.) Zopf - Skorepa (1970: 79 as Lecanora rubina)

  168. Rinodina ascociscana (Tuck.) Tuck. - Wilson & Methven (1997: 450)
  169. Rinodina destituta (Nyl.) A. Zahlbr. - Nylander (1891: 41 Type in Helsinki, Finland H-NYL 10210), Sheard (2010: 82)
  170. Rinodina oxydata (A. Massal.) A. Massal. - Basinger et al. (1996: 332)
  171. Rinodina subminuta H. Magn. - Wilson & Methven (1997: 450)

  172. Rufoplaca arenaria (Pers.) Arup, Søchting & Frödén - McKnight et al. (1987: 26 as Caloplaca arenaria)

  173. Sarcogyne similis H. Magn. - Poelt & Vezda (1974: 52)

  174. Scoliciospora chlorococcum (Stenh.) Vezda - Wilson & Methven (1997: 450)

  175. Scytinium dactylinum (Tuck.) Otálora, P. M. Jørg. & Wedin - Wilhelm & Ladd (1985: 221 as Leptogium dactylinum), Wilhelm & Lampa (1987: 50 as Leptogium dactylinum)
  176. Scytinium lichenoides (L.) Otálora, P. M. Jørg. & Wedin - Stotler (1976: 9 as Leptogium lichenoides), Wilhelm & Ladd (1985: 221 as Leptogium lichenoides)
  177. Scytinium subtile (Schrader) Otálora, P. M. Jørg. & Wedin - Skorepa & Snider (1967: 105 as Leptogium minutissimum)
  178. Scytinium tenuissimum (Dickson) Otálora, P. M. Jørg. & Wedin - Wilhelm & Ladd (1985: 221 as Leptogium tenuissimum)

  179. Trapeliopsis flexuosa (Fr.) Coppins & P. James - Skorepa (1970: 79 as Lecidea flexuosa)

  180. Usnea mutabilis Stirt. - Skorepa & Snider (1967: 105), Stotler (1976: 9), Wilhelm & Ladd (1985: 229), Wilson & Methven (1997: 450)
  181. Usnea strigosa (Ach.) Eat. subsp. strigosa - Wilhelm & Ladd (1985: 229), Wilhelm & Lampa (1987: 53)

  182. Variolaria pustulata (Brodo & W. L. Culb.) Lendemer, Hodkinson & R. C. Harris - Wilson & Methven (1997: 450 as Loxospora pustulata)

  183. Verrucaria calkinsiana Serv. - McKnight et al. (1987: 31)

  184. Xanthocarpia feracissima (H. Magn.) Frödén, Arup & Søchting - McKnight et al. (1987: 26 as Caloplaca feracissima)

  185. Xanthomendoza fallax (Hepp) Söchting, Kärnefelt & S. Kondr. - Skorepa (1970: 80 as Xanthoria fallax), Wilhelm & Ladd (1985: 231 as Xanthoria fallax), Wilhelm & Lampa (1987: 53 as Xanthoria fallax), Muir & McCune (1988: 365 as Xanthoira fallax)

  186. Xanthoparmelia conspersa (Ehrh. ex Ach.) Hale - Stotler (1976: 9), Wilhelm & Ladd (1985: 229)
  187. Xanthoparmelia cumberlandia (Gyeln.) Hale - Wilhelm & Ladd (1985: 230)
  188. Xanthoparmelia dierythra (Hale) Hale - Skorepa (1970: 79 as Parmelia dierythra)
  189. Xanthoparmelia hypofusca (Gyeln.) Hodkinson & Lendemer - Wilhelm & Ladd (1985: 230 erroneously as Xanthoparmelia tasmanica)
  190. Xanthoparmelia plittii (Gyeln.) Hale - Wilhelm & Ladd (1985: 230)
  191. Xanthoparmelia stenophylla (Ach.) Ahti & D. Hawksw. - Czeczuga & Wilhelm (1992: 6 as Xanthoparmelia somloensis)