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

 

  1. Acanthothecis poitaeoides (M. Wirth & Hale) E. Tripp & Lendemer - Egan (1978: 153 as Graphis poitaeoides)

  2. Acarospora chrysops (Tuck.) H. Magn. - Egan (1978: 151)
  3. Acarospora citrina (Tayl.) Zahlbr. - Egan (1978: 151)
  4. Acarospora contigua H. Magn. - Egan (1978: 151)
  5. Acarospora epilutescens Zahlbr. - Egan (1978: 151), Egan (1978: 151 as Acarospora albida)
  6. Acarospora glaucocarpa (Wahlenb. ex Ach.) Körb. - Egan (1978: 151)
  7. Acarospora heufleriana Körb. - Egan (1978: 151 as Acarospora rubicunda)
  8. Acarospora macrospora (Hepp) A. Massal. ex Bagl. - Egan (1978: 151)
  9. Acarospora nicolai B. de Lesd. - Magnusson (1929: 286 as Acarospora caesiofusca Protologue), Egan (1978: 151 as Acarospora caesiofusca), Knudsen & Morse (2009: 148 Lectotypification) Type in Geneva, Switzerland G
  10. Acarospora schleicheri (Ach.) A. Massal. - Egan (1978: 151), Egan (1978: 151 as Acarospora subcontigua)
  11. Acarospora sinopica (Wahlenb. ex Ach.) Körb. - Egan (1978: 151)
  12. Acarospora socialis H. Magn. - Egan (1978: 151), Egan (1978: 151 as Acarospora subalbida)
  13. Acarospora veronensis A. Massal. - Egan (1978: 151 as Acarospora tenebrica)

  14. Amandinea punctata (Hoffm.) Coppins & Scheid. - Reese & Tucker (1970: 699 as Buellia punctata), Egan (1978: 151 as Buellia punctata)

  15. Anaptychia palmulata (Michx.) Vain. - Egan (1978: 151)

  16. Anisomeridium subprostans (Nyl.) R. C. Harris - Egan (1978: 151 as Arthopyrenia subprostans)

  17. Anzia colpodes (Ach.) Stizenb. - Egan (1978: 151)
  18. Anzia ornata (Zahlbr.) Asahina - Egan (1978: 151)

  19. Arthonia caribaea (Ach.) A. Massal. - Egan (1978: 151)
  20. Arthonia cinnabarina (DC.) Wallr. - Egan (1978: 151)
  21. Arthonia conferta (Fée) Nyl. - Egan (1978: 151)
  22. Arthonia erubescens Willey - Egan (1978: 151)
  23. Arthonia erupta Nyl. - Egan (1978: 151)
  24. Arthonia interveniens Nyl. - Reese & Tucker (1970: 699 as Arthothelium interveniens), Egan (1978: 151 as Arthothelium interveniens)
  25. Arthonia leucastraea Tuck. - Tuckerman (xx: xx Protologue), Egan (1978: 151) Type
  26. Arthonia macrotheca Fée - Egan (1978: 151 as Arthothelium macrothecum)
  27. Arthonia microspermella Willey - Egan (1978: 151)
  28. Arthonia pyrrhuliza Nyl. - Egan (1978: 151)
  29. Arthonia radiata (Pers.) Ach. - Reese & Tucker (1970: 699), Egan (1978: 151)
  30. Arthonia ravenelii Tuck. - Egan (1978: 151)
  31. Arthonia rubella (Fée) Nyl. - Egan (1978: 151)
  32. Arthonia viridicans Willey - Egan (1978: 151)

  33. Aspicilia cinerea (L.) Körb. - Egan (1978: 151)

  34. Athallia holocarpa (Hoffm.) Arup, Frödén & Søchting - Egan (1978: 152 as Caloplaca holocarpa)

  35. Bacidia medialis (Tuck. ex Nyl.) Zahlbr. - Egan (1978: 151 authors [Tuck.] Zahlbr.)
  36. Bacidia schweinitzii (Fr. ex Tuck.) A. Schneid. - Reese & Tucker (1970: 697), Egan (1978: 151)
  37. Bacidia suffusa (Fr.) A. Schneid. - Egan (1978: 151)

  38. Baculifera curtisii (Tuck.) Marbach - Egan (1978: 151 as Buellia curtisii)

  39. Bagliettoa calciseda (DC.) Gueidan & Cl. Roux - Egan (1978: 156 as Verrucaria calciseda)

  40. Blastenia ferruginea (Huds.) A. Massal. - Egan (1978: 152 as Caloplaca ferruginea)

  41. Brigantiaea leucoxantha (Spreng.) R. Sant. & Hafellner - Reese & Tucker (1970: 697 as Lopadium leucoxanthum), Egan (1978: 154 as Lopadium leucoxanthum)

  42. Brownliella cinnabarina (Ach.) S. Y. Kondr., Kärnefelt, A. Thell, Elix, J. Kim, A. S. Kondr. & J.-S. Hur - Egan (1978: 152 as Caloplaca cinnabarina)

  43. Buellia demutans Zahlbr. - Egan (1978: 151 as Buellia callispora)
  44. Buellia disciformis (Fr.) Mudd - Egan (1978: 151)
  45. Buellia dispersa Tuck. - Egan (1978: 151 as Buellia retrovertens)
  46. Buellia erubescens Arnold - Egan (1978: 151 as Buellia stillingiana)
  47. Buellia lepidastra (Tuck.) Tuck. - Egan (1978: 151)
  48. Buellia mamillana (Tuck.) W. A. Weber - Reese & Tucker (1970: 699 as Buellia glaziouana), Egan (1978: 151 as Buellia glaziouana)
  49. Buellia spuria (Schaer.) Anzi - Egan (1978: 151)

  50. Bulbothrix confoederata (W. L. Culb.) Hale - Egan (1978: 151)
  51. Bulbothrix coronata (Fée) Hale - Wetmore (1976: 304 as Parmelia coronata), Egan (1978: 151)
  52. Bulbothrix scortella (Nyl.) Hale - Reese & Tucker (1970: 698 as Parmelia scortella), Egan (1978: 151 erroneously as Bulbothrix goebelii)

  53. Caloplaca camptidia (Tuck.) Zahlbr. - Egan (1978: 152)
  54. Caloplaca cerina (Hedw.) Th. Fr. - Egan (1978: 152)
  55. Caloplaca diphasia (Tuck.) Wetmore - Tuckerman (1858: 426 as Lecanora diphasia Type), Egan (1978: 152 as Lecanora diphasia), Wetmore (1994: 823 Lectotype in Chicago, USA FH)
  56. Caloplaca eugyra (Tuck.) Zahlbr. - Tuckerman (xx: xx Type), Egan (1978: 152)
  57. Caloplaca floridana (Tuck.) S. C. Tucker - Egan (1978: 152 as Lecanora floridana)
  58. Caloplaca microphyllina (Tuck.) Hasse - Egan (1978: 152)
  59. Caloplaca pollinii (A. Massal.) Jatta - Egan (1978: 152)
  60. Caloplaca wrightii (Will. ex Tuck.) Fink - Tucker (1882: 178 as Caloplaca ferrugineum d. wrightii Type in FH), Egan (1978: 152), Wetmore (2004: 289)
  61. Caloplaca yuchiorum Lendemer & C. A. Morse - Lendemer & Morse (2010: 331 First record)

  62. Candelaria concolor (Dicks.) B. Stein - Wetmore (1976: 302), Egan (1978: 152)
  63. Candelaria fibrosa (Fr.) Müll. Arg. - Wetmore (1976: 302), Egan (1978: 152)

  64. Candelariella aurella (Hoffm.) Zahlbr. - Egan (1978: 152)
  65. Candelariella vitellina (Hoffm.) Müll. Arg. - Egan (1978: 152)

  66. Candelina mexicana (B. de Lesd.) Poelt - Egan (1978: 152)
  67. Candelina submexicana (B. de Lesd.) Poelt - Wetmore (1976: 302), Egan (1978: 152)

  68. Canoparmelia caroliniana (Nyl.) Elix & Hale - Reese & Tucker (1970: 698 as Parmelia caroliniana), Egan (1978: 155 as Pseudoparmelia caroliniana)
  69. Canoparmelia cryptochlorophaea (Hale) Elix & Hale - Egan (1978: 155 as Pseudoparmelia cryptochlorophaea)
  70. Canoparmelia texana (Tuck.) Elix & Hale - Egan (1978: 155 as Pseudoparmelia texana)

  71. Chaenotheca trichialis (Ach.) Th. Fr. - Egan (1978: 152)

  72. Constrictolumina cinchonae (Ach.) Lücking, M. P. Nelsen & Aptroot - Reese & Tucker (1970: 699 as Arthopyrenia cinchonae), Egan (1978: 151 as Arthopyrenia cinchonae)

  73. Cryptothecia striata G. Thor - Egan (1978: 152 as Chiodecton montagnaei)

  74. Chrysothrix caesia (Flot.) Ertz & Tehler - Egan (1978: 151 as Arthonia lecideella)
  75. Chrysothrix chlorina (Ach.) J. R. Laundon - Egan (1978: 153 as Lepraria chlorina)

  76. Circinaria calcarea (L.) A. Nordin, S. Savic & Tibell - Egan (1978: 151 as Aspicilia calcarea)
  77. Circinaria contorta A. Nordin, Savic & Tibell - Egan (1978: 151 as Aspicilia contorta)

  78. Cladonia bacillaris (Ach.) Nyl. - Wetmore (1976: 302), Egan (1978: 152)
  79. Cladonia beaumontii (Tuck.) Vain. - Egan (1978: 152)
  80. Cladonia caespiticia (Pers.) Flörke - Egan (1978: 152)
  81. Cladonia cariosa (Ach.) Spreng. - Egan (1978: 152)
  82. Cladonia chlorophaea (Flörke ex Somm.) Spreng. - Wetmore (1976: 302), Egan (1978: 152)
  83. Cladonia cristatella Tuck. - Egan (1978: 152)
  84. Cladonia cryptochlorophaea Asahina - Egan (1978: 152)
  85. Cladonia didyma (Fée) Vain. - Egan (1978: 152)
  86. Cladonia evansii Abbayes - Egan (1978: 152 as Cladina evansii)
  87. Cladonia fimbriata (L.) Fr. - Egan (1978: 152)
  88. Cladonia furcata (Huds.) Schrad. - Egan (1978: 152)
  89. Cladonia grayi Merr. ex Sandst. - Egan (1978: 152)
  90. Cladonia leporina Fr. - Egan (1978: 152)
  91. Cladonia macilenta Hoffm. - Egan (1978: 152)
  92. Cladonia peziziformis (With.) J. R. Laundon - Reese & Tucker (1970: 697 as Cladonia capitata), Egan (1978: 152 as Cladonia capitata)
  93. Cladonia pleurota (Flörke) Schaer. - Egan (1978: 152)
  94. Cladonia pyxidata Tuck. - Wetmore (1976: 302), Egan (1978: 152)
  95. Cladonia ravenelii Tuck. - Egan (1978: 152)
  96. Cladonia santensis Tuck. - Egan (1978: 152)
  97. Cladonia squamosa (Scop.) Hoffm. - Egan (1978: 152)
  98. Cladonia strepsilis (Ach.) Grognot - Egan (1978: 152)
  99. Cladonia subcariosa Nyl. - Egan (1978: 152 as Cladonia clavulifera), Egan (1978: 152 as Cladonia polycarpoides), Egan (1978: 152)
  100. Cladonia subradiata (Vain.) Sandst. - Wetmore (1976: 302 erroneously as Cladonia balfourii), Egan (1978: 152 erroneously as Cladonia balfourii)
  101. Cladonia subtenuis (Abbayes) Mattick - Egan (1978: 152 as Cladina subtenuis)
  102. Cladonia symphycarpa (Flörke) Fr. - Egan (1978: 152)
  103. Cladonia uncialis (L.) Wigg. - Egan (1978: 152)
  104. Cladonia verticillata (Hoffm.) Schaer. - Egan (1978: 152)

  105. Coccocarpia erythroxyli (Spreng.) Swinscow & Krog - Egan (1978: 152), Egan (1978: 152 as Coccocarpia incisa)
  106. Coccocarpia palmicola (Sprengel) Arv. & D. J. Galloway - Reese & Tucker (1970: 697 as Coccocarpia cronia), Wetmore (1976: 303 as Coccocarpia cronia), Egan (1978: 152 as Coccocarpia cronia)
  107. Coccocarpia pellita (Ach.) Müll. Arg. - Egan (1978: 152)

  108. Coenogonium implexum Nyl. - Egan (1978: 152)
  109. Coenogonium interplexum Nyl. - Egan (1978: 152)
  110. Coenogonium interpositum Nyl. - Egan (1978: 152)

  111. Collema fasciculare (L.) F. H. Wigg. - Egan (1978: 152)
  112. Collema flaccidum (Ach.) Ach. - Egan (1978: 152)
  113. Collema furfuraceum (Arnold) Du Rietz - Wetmore (1976: 303), Egan (1978: 152)
  114. Collema leptaleum Tuck. - Egan (1978: 152)
  115. Collema nigrescens (Huds.) DC. - Egan (1978: 152)
  116. Collema pulcellum Ach. var. leucopeplum (Tuck.) Degel. - Egan (1978: 152 as Collema leucopeplum)
  117. Collema subflaccidum Degel. - Reese & Tucker (1970: 697 erroneously as Collema subfurvum), Egan (1978: 152 erroneously as Collema subfurvum)
  118. Collema texanum Tuck. - Egan (1978: 152)

  119. Cratiria lauricassiae (Fée) Marbach - Egan (1978: 151 as Buellia lauricassiae)

  120. Crocodia aurata (Ach.) Link - Egan (1978: 155 as Pseudocyphellaria aurata)

  121. Dermatocarpon americanum Vain. - Heidmarsson (2003: 466)
  122. Dermatocarpon luridum (With.) J. R. Laundon - Egan (1978: 152 as Dermatocarpon fluviatile)
  123. Dermatocarpon miniatum (L.) Mann - Wetmore (1976: 303), Egan (1978: 152)
  124. Dermatocarpon moulinsii (Mont.) Zahlbr. - Wetmore (1976: 303), Egan (1978: 152)
  125. Dermatocarpon tomentulosum Amtoft - Amtoft (2006: 182 Type in New York, USA NY)

  126. Dimelaena oreina (Ach.) Norm. - Egan (1978: 152)

  127. Diploschistes aeneus (Müll. Arg.) Lumbsch - Müller Argau (1888: 64 Protologue), Lumbsch et al. (1993: 303) Type in Geneva, Switzerland G
  128. Diploschistes scruposus (Schreb.) Norm. - Egan (1978: 152)

  129. Diplotomma alboatrum (Hoffm.) Flot. - Egan (1978: 151 as Buellia alboatra)

  130. Dirinaria aegialita (H. Magn.) Awasthi - Wetmore (1976: 304 as Dirinaria aspera), Egan (1978: 153 as Dirinaria aspera)
  131. Dirinaria applanata (Fée) D. D. Awasthi - Egan (1978: 153)
  132. Dirinaria confluens (Fr.) D. D. Awasthi - Egan (1978: 153)
  133. Dirinaria confusa D. D. Awasthi - Egan (1978: 153)
  134. Dirinaria frostii (Tuck.) Hale & W. L. Culb. - Wetmore (1976: 304), Egan (1978: 153)
  135. Dirinaria leopoldii (Stein) D. D. Awasthi - Egan (1978: 153)
  136. Dirinaria picta (Sw.) Clem. & Shear - Egan (1978: 153)
  137. Dirinaria purpurascens (Vain.) B. Moore - Egan (1978: 153)

  138. Dyplolabia afzelii (Ach.) A. Massal. - Egan (1978: 153 as Graphis afzelii)

  139. Enchylium coccophorum (Tuck.) Otálora, P. M. Jørg. & Wedin - Tuckerman (1862: 385 as Collema coccophorum Type in Farlow Lectotype), Degelius (1954: 184 as Collema coccophorum Lectotypification), Wetmore (1976: 303 as Collema coccophorum), Egan (1978: 152 as Collema coccophorum)
  140. Enchylium conglomeratum (Hoffm.) Otálora, P. M. Jørg. & Wedin - Wetmore (1976: 303 as Collema conglomeratum), Egan (1978: 152 as Collema conglomeratum)
  141. Enchylium polycarpon (Hoffm.) Otálora, P. M. Jørg. & Wedin - Egan (1978: 152 as Collema polycarpon)
  142. Enchylium tenax (Sw.) Gray - Egan (1978: 152 as Collema tenax)

  143. Endocarpon pusillum Hedw. - Egan (1978: 153)

  144. Fissurina insidiosa C. Knight & Mitten - Reese & Tucker (1970: 697 as Graphis beaumontii), Egan (1978: 153 as Graphis beaumontii)
  145. Fissurina leuconephela Nyl. - Egan (1978: 153 as Graphina leuconephela)

  146. Flavoparmelia baltimorensis (Gyeln. & Fóriss) Hale - Egan (1978: 155 as Pseudoparmelia baltimorensis)
  147. Flavoparmelia caperata (L.) Hale - Reese & Tucker (1970: 698 as Parmelia caperata), Wetmore (1976: 304 as Parmelia caperata), Egan (1978: 155 as Pseudoparmelia caperata)
  148. Flavoparmelia rutidota (Hook. f. & Taylor) Hale - Wetmore (1976: 307 as Parmelia rutidota), Egan (1978: 155 as Pseudoparmelia rutidota)

  149. Flavopunctelia flaventior (Stirt.) Hale - Wetmore (1976: 304 as Parmelia flaventior), Egan (1978: 154 as Parmelia flaventior)
  150. Flavopunctelia praesignis (Nyl.) Hale - Wetmore (1976: 307), Egan (1978: 154 as Parmelia praesignis)
  151. Flavopunctelia soredica Hale - Wetmore (1976: 307 as Parmelia ulophyllodes), Egan (1978: 154 as Parmelia ulophyllodes)

  152. Gallowayella weberi (S. Y. Kondr. & Kärnefelt) S. Y. Kondr., Fedorenko, S. Stenroos, Kärnefelt, Elix, J. S. Hur & A. Thell - Kondratyuk & Kärnefelt (2003: 126 as Xanthoria weberi Type in Kraków, Poland KRAM), Fedorenko et al. (2012: 60)

  153. Gassicurtia catasema (Tuck.) Marbach - Egan (1978: 151 as Buellia caloosensis)

  154. Glyphis cicatriosa Ach. - Reese & Tucker (1970: 697), Egan (1978: 153 as Glyphis achariana), Egan (1978: 153)
  155. Glyphis scyphulifera (Ach.) Staiger - Egan (1978: 153 as Gyrostomum scyphuliferum)

  156. Graphis acharii Fée - Egan (1978: 153 as Graphina acharii)
  157. Graphis elegans (Borr. ex Sm.) Ach. - Egan (1978: 153)
  158. Graphis scripta (L.) Ach. - Reese & Tucker (1970: 697), Egan (1978: 153)
  159. Graphis tenella Ach. - Reese & Tucker (1970: 697), Egan (1978: 153)

  160. Gyalolechia flavorubescens (Hudson) Søchting, Frödén & Arup - Reese & Tucker (1970: 699 as Caloplaca aurantiaca), Egan (1978: 152 as Caloplaca flavorubescens)
  161. Gyalolechia flavovirescens (Wulfen) Søchting, Frödén & Arup - Egan (1978: 152 as Caloplaca flavovirescens)

  162. Haematomma fenzlianum A. Massal. - Egan (1978: 153 as Haematomma subpuniceum)
  163. Haematomma persoonii (Fée) A. Massal. - Reese & Tucker (1970: 698 erroneously as Haematomma puniceum), Egan (1978: 153 erroneously as Haematomma puniceum)

  164. Heppia lutosa (Ach.) Nyl. - Wetmore (1976: 304), Egan (1978: 153)

  165. Herpothallon rubrocinctum (Sw.) Vain. - Egan (1978: 152 as Chiodecton sanguineum)

  166. Heterodermia albicans (Pers.) Swinscow & Krog - Reese & Tucker (1970: 698 as Anaptychia ravenelii), Reese & Tucker (1970: 699 as Physica albicans), Wetmore (1976: 304 as Heterodermia domingensis), Egan (1978: 153), Egan (1978: 155 as Physica albicans)
  167. Heterodermia appalachensis (Kurok.) W. L. Culb. - Wetmore (1976: 304), Egan (1978: 153)
  168. Heterodermia diademata (Taylor) D. D. Awasthi - Wetmore (1976: 304), Egan (1978: 153)
  169. Heterodermia echinata (Taylor) W. L. Culb. - Egan (1978: 153)
  170. Heterodermia galactophylla (Tuck.) W. L. Culb. - Egan (1978: 153)
  171. Heterodermia granulifera (Ach.) W. L. Culb. - Wetmore (1976: 304), Egan (1978: 153)
  172. Heterodermia hypoleuca (Mühl.) Trev. - Egan (1978: 153)
  173. Heterodermia leucomela (L.) Poelt - Wetmore (1976: 304), Egan (1978: 153)
  174. Heterodermia obscurata (Nyl.) Trev. - Egan (1978: 153)
  175. Heterodermia rugulosa (Kurok.) Wetmore - Wetmore (1976: 304), Egan (1978: 153)
  176. Heterodermia speciosa (Wulf.) Trev. - Egan (1978: 153)

  177. Hyperphyscia adglutinata (Kremp.) A. Massal. - Wetmore (1976: 310 as Physcia elaeina), Egan (1978: 155 as Physciopsis elaeina)
  178. Hyperphyscia syncolla Tuck. ex Nyl. - Wetmore (1976: 310 as Physcia syncolla), Egan (1978: 155 as Physciopsis syncolla)

  179. Hypocenomyce scalaris (Ach. ex Lilj.) M. Choisy - Egan (1978: 153 as Lecidea scalaris)

  180. Hypotrachyna horrescens (Taylor) Krog & Swinscow - Reese & Tucker (1970: 698 as Parmelia horrescens), Egan (1978: 154 as Parmelina horrescens)
  181. Hypotrachyna laevigata (Sm.) Hale - Wetmore (1976: 304 as Parmelia laevigata), Egan (1978: 153)
  182. Hypotrachyna livida (Taylor) Hale - Egan (1978: 153)
  183. Hypotrachyna minarum (Vain.) Krog & Swinscow - Reese & Tucker (1970: 698 as Parmelia dissecta), Egan (1978: 154 as Parmelina dissecta)
  184. Hypotrachyna osseoalba (Vain.) Park & Hale - Egan (1978: 153 as Hypotrachyna formosana)
  185. Hypotrachyna pustulifera (Hale) Skorepa - Wetmore (1976: 307 as Parmelia pustulifera), Egan (1978: 153)

  186. Imshaugia aleurites (Ach.) S. F. Meyer - Wetmore (1976: 307 as Parmeliopsis aleurites), Egan (1978: 154 as Parmeliopsis aleurites)

  187. Lasallia papulosa (Ach.) Llano - Wetmore (1976: 304), Egan (1978: 153)

  188. Lathagrium cristatum (L.) Otálora, P. M. Jørg. & Wedin - Egan (1978: 152 as Collema cristatum)
  189. Lathagrium fuscovirens (With.) Otálora, P. M. Jørg. & Wedin - Wetmore (1976: 303 as Collema tuniforme), Egan (1978: 152 as Collema tuniforme)

  190. Lecania stigmatella (Tuck.) S. Ekman - Egan (1978: 151 as Bacidia stigmatella)

  191. Lecanora allophana (Ach.) Nyl. - Reese & Tucker (1970: 698 as Lecanora subfusca), Egan (1978: 153), Egan (1978: 153 as Lecanora subfusca)
  192. Lecanora caesiorubella Ach. subsp. caesiorubella - Reese & Tucker (1970: 698)
  193. Lecanora caesiorubella Ach. subsp. glaucomodes (Nyl.) Imshaug & Brodo - Egan (1978: 153)
  194. Lecanora caesiorubella Ach. subsp. saximontana Imshaug & Brodo - Egan (1978: 153)
  195. Lecanora carpinea (L.) Vain. - Egan (1978: 153)
  196. Lecanora circumborealis (Ach.) Nyl. - Egan (1978: 153 as Lecanora coilocarpa)
  197. Lecanora frustulosa (Dicks.) Ach. - Egan (1978: 153)
  198. Lecanora glabrata (Ach.) Malme - Egan (1978: 153)
  199. Lecanora miculata Ach. - Egan (1978: 153)
  200. Lecanora muralis (Schreb.) Rabenh. - Egan (1978: 153)
  201. Lecanora pallidochlorina T. H. Nash, B. D. Ryan & Lumbsch - Ladd & Morse (2012: 62)
  202. Lecanora subpallens Zahlbr. - Egan (1978: 153 as Lecanora caesiorubella subsp. lathamii)
  203. Lecanora varia (Ehrh.) Ach. - Egan (1978: 153)

  204. Lecidea hypomela Nyl. - Egan (1978: 153)
  205. Lecidea lapicida (Ach.) Ach. - Egan (1978: 153)
  206. Lecidea lithophila (Ach.) Ach. - Egan (1978: 153)
  207. Lecidea varians Ach. - Egan (1978: 153)

  208. Leiorreuma exaltatum (Mont. & Bosch) Staiger - Egan (1978: 155 as Phaeographis exaltata)

  209. Lepra amara (Ach.) Hafellner - Reese & Tucker (1970: 698 as Pertusaria amara), Egan (1978: 155 as Pertusaria amara)

  210. Lepraria membranacea (Dicks.) Vain. - Egan (1978: 153)

  211. Leproplaca cirrochroa (Ach.) Arup, Frödén & Søchting - Egan (1978: 152 as Caloplaca cirrochroa)

  212. Leptogium arsenei Sierk - Wetmore (1976: 304), Egan (1978: 153)
  213. Leptogium austroamericanum (Malme) C. W. Dodge - Reese & Tucker (1970: 697), Egan (1978: 153)
  214. Leptogium azureum (Sw.) Mont. - Egan (1978: 153)
  215. Leptogium burgessii (L.) Mont. - Egan (1978: 153 as Leptogium inflexum)
  216. Leptogium chloromelum (Ach.) Nyl. - Reese & Tucker (1970: 697), Egan (1978: 153)
  217. Leptogium corticola (Taylor) Tuck. - Egan (1978: 153)
  218. Leptogium cyanescens (Rabenh.) Körb. - Reese & Tucker (1970: 697), Egan (1978: 153)
  219. Leptogium denticulatum Nyl. - Wetmore (1976: 304), Egan (1978: 153)
  220. Leptogium hirsutum Sierk - Egan (1978: 153)
  221. Leptogium marginellum (Sw.) S. Gray - Egan (1978: 154)
  222. Leptogium milligranum Sierk - Reese & Tucker (1970: 697), Wetmore (1976: 304), Egan (1978: 154)
  223. Leptogium phyllocarpum Sierk - Egan (1978: 154)
  224. Leptogium pseudofurfuraceum P. M. Jørg. & Wallace - Wetmore (1976: 304 erroneously as Leptogium furfuraceum), Egan (1978: 153 erroneously as Leptogium furfuraceum)
  225. Leptogium saturninum (Dicks.) Nyl. - Egan (1978: 154)

  226. Letrouitia domingensis (Pers.) Hafellner & Bellem. - Egan (1978: 154 as Lopadium domingense)

  227. Leucodecton subcompunctum (Nyl.) Frisch - Egan (1978: 154 as Leptotrema polycarpum)

  228. Leucodecton willeyi (Nyl.) R. C. Harris - Egan (1978: 155 as Phlyctis willeyi)

  229. Lichinella cribellifera (Nyl.) P. P. Moreno & Egea - Wetmore (1976: 311 as Rechingeria cribellifera), Egan (1978: 156 as Rechingeria cribellifera)

  230. Lobaria quercizans Michx. - Egan (1978: 154)
  231. Lobaria ravenelii (Tuck.) Yoshim. - Reese & Tucker (1970: 697 as Lobaria erosa), Egan (1978: 154)

  232. Lopadium augustini (Tuck.) Zahlbr. - Egan (1978: 154)

  233. Medusulina texana Müll. Arg. - Egan (1978: 154)

  234. Megalospora pachycheila (Tuck.) Sipman - Egan (1978: 151 as Bombyliospora pachycheila)
  235. Megalospora tuberculosa (Fée) Sipman - Reese & Tucker (1970: 697 as Bombyliospora tuberculosa), Egan (1978: 151 as Bombyliospora tuberculosa)

  236. Melanohalea exasperata (De Not.) O. Blanco et al. - Egan (1978: 154 as Parmelia exasperata)
  237. Melanohalea exasperatula (Nyl.) O. Blanco et al. - Egan (1978: 154 as Parmelia exasperatula)
  238. Melanohalea olivacea (L.) O. Blanco et al. - Egan (1978: 154 as Parmelia olivacea)
  239. Melanohalea subolivacea (Nyl.) O. Blanco et al. - Wetmore (1976: 307 as Parmelia subolivacea), Egan (1978: 154 as Parmelia subolivacea)

  240. Melaspilea maculosa (Fr.) Müll. Arg. - Egan (1978: 154)

  241. Myelochroa aurulenta (Tuck.) Elix & Hale - Reese & Tucker (1970: 698 as Parmelia aurulenta), Egan (1978: 154 as Parmelina aurulenta)
  242. Myelochroa galbina (Ach.) Elix & Hale - Egan (1978: 154 as Parmelina galbina)
  243. Myelochroa obsessa (Ach.) Elix & Hale - Egan (1978: 154 as Parmelina obsessa)

  244. Neocatapyrenium disparatum Breuss - Breuss (2005: 537 Protologue) Type in MIN

  245. Nephroma helveticum Ach. subsp. helveticum - Egan (1978: 154)

  246. Normandina pulchella (Borr.) Nyl. - Wetmore (1976: 304), Egan (1978: 154)

  247. Ocellularia americana Hale - Egan (1978: 154)
  248. Ocellularia sanfordiana (Zahlbr.) Hale - Egan (1978: 156 as Thelotrema sanfordianum)

  249. Ochrolechia tartarea (L.) A. Massal. - Egan (1978: 154)

  250. Opegrapha astraea Tuck. - Egan (1978: 154)
  251. Opegrapha bonplandii Fée - Egan (1978: 154)
  252. Opegrapha prosodea Ach. - Egan (1978: 154)
  253. Opegrapha ravenelii (Tuck.) Tehler - Tucker (1872: 196 as Platygrapha ravenelii Type in FH), Egan (1978: 156 as Schismatomma ravenelii)

  254. Pachnolepia pruinata (Torss.) Frisch & G. Thor - Egan (1978: 151 as Arthonia chiodectella)

  255. Pannaria conoplea (Ach.) Bory - Wetmore (1976: 304 as Pannaria pityrea), Egan (1978: 154 as Pannaria pityrea)
  256. Pannaria lurida (Mont.) Nyl. subsp. lurida - Reese & Tucker (1970: 697), Egan (1978: 154)
  257. Pannaria rubiginosa (Thunb. ex Ach.) Del. - Egan (1978: 154)

  258. Parmeliella pannosa (Sw.) Nyl. - Egan (1978: 154)

  259. Parmotrema austrosinense (Zahlbr.) Hale - Egan (1978: 154)
  260. Parmotrema cetratum (Ach.) Hale - Egan (1978: 154)
  261. Parmotrema conferendum Hale - Egan (1978: 154)
  262. Parmotrema crinitum (Ach.) M. Choisy - Wetmore (1976: 304 as Parmelia crinita), Egan (1978: 154)
  263. Parmotrema cristiferum (Taylor) Hale - Egan (1978: 154)
  264. Parmotrema endosulphureum (Hillmann) Hale - Egan (1978: 154)
  265. Parmotrema eurysacum (Hue) Hale - Egan (1978: 154)
  266. Parmotrema hababianum (Gyeln.) Hale - Wetmore (1976: 304 as Parmelia hababiana), Egan (1978: 154 as Parmelia hababiana)
  267. Parmotrema haitiense (Hale) Hale - Egan (1978: 154)
  268. Parmotrema hypotropum(Nyl.) Hale - Egan (1978: 154)
  269. Parmotrema louisiana (Hale) Hale - Egan (1978: 155)
  270. Parmotrema margaritatum (Hue) Hale - Wetmore (1976: 304 as Parmelia margaritata), Egan (1978: 155)
  271. Parmotrema mellissii (C. W. Dodge) Hale - Egan (1978: 155)
  272. Parmotrema submarginale (Michx.) DePriest & B. W. Hale - Egan (1978: 155 as Parmotrema michauxianum)
  273. Parmotrema perforatum (Jacq.) A. Massal. - Egan (1978: 155 as Parmotrema )
  274. Parmotrema praesorediosum (Nyl.) Hale - Egan (1978: 155)
  275. Parmotrema preperforatum (W. L. Culb. & C. F. Culb.) Hale - Egan (1978: 155)
  276. Parmotrema rampoddense (Nyl.) Hale - Egan (1978: 155)
  277. Parmotrema reticulatum (Taylor) M. Choisy - Wetmore (1976: 307 as Parmelia reticulata), Egan (1978: 155)
  278. Parmotrema gardneri (C. W. Dodge) Sérus. - Egan (1978: 155 erroneously as Parmotrema robustum)
  279. Parmotrema subisidiosum (Müll. Arg.) Hale - Reese & Tucker (1970: 698 as Parmelia subisidiosa), Egan (1978: 155)
  280. Parmotrema subrigidum Egan - Egan (1978: 155 erroneously as Parmotrema rigidum), Egan et al. (2005: 405)
  281. Parmotrema subtinctorium (Zahlbr.) Hale - Wetmore (1976: 307 as Parmelia subtinctoria), Egan (1978: 155)
  282. Parmotrema sulphuratum (Nees & Flot.) Hale - Egan (1978: 155)
  283. Parmotrema tinctorum (Despr. ex Nyl.) Hale - Reese & Tucker (1970: 698 as Parmelia tinctorum), Egan (1978: 155)
  284. Parmotrema ultralucens (Krog) Hale - Reese & Tucker (1970: 698 erroneously as Parmelia subcrinita), Egan (1978: 155)

  285. Paulia pyrenoides (Nyl.) Henssen - Nylander (1858: 100 as Omphalaria pyrenoides Type in Helsinki, Finland H-NYL), Fink (1935: 150 as Thyrea pyrenoides), Egan (1978: 156 as Thyrea pyrenoides)

  286. Peccania texana (Tuck.) Wetmore - Tuckerman (1872: 80 as Synalissa texana Type), Egan (1978: 156 as Synalissa texana), Wetmore (1985: 246)

  287. Peltigera canina (L.) Willd. - Reese & Tucker (1970: 697), Egan (1978: 155)
  288. Peltigera collina (Ach.) Schrad. - Egan (1978: 155)
  289. Peltigera didactyla (With.) J. R. Laundon - Wetmore (1976: 307 as Peltigera canina var. spuria), Egan (1978: 155 as Peltigera spuria)
  290. Peltigera polydactylon (Neck.) Hoffm. - Egan (1978: 155)
  291. Peltigera rufescens (Weiss) Humb. - Reese & Tucker (1970: 697 as Peltigera canina var. rufescens), Wetmore (1976: 307 as Peltigera canina var. rufescens), Egan (1978: 155)

  292. Peltula bolanderi (Tuck.) Wetmore - Wetmore (1976: 308), Egan (1978: 155)
  293. Peltula euploca (Ach.) Poelt ex Pišút - Wetmore (1976: 308), Egan (1978: 155)
  294. Peltula michoacanensis (B. de Lesd.) Wetmore - Wetmore (1976: 308), Egan (1978: 155)
  295. Peltula obscurans (Nyl.) Gyeln. var. obscurans - Wetmore (1976: 308), Egan (1978: 155)
  296. Peltula obscurans (Nyl.) Gyeln. var. hassei (Zahlbr.) Wetmore - Wetmore (1976: 308)
  297. Peltula omphaliza (Nyl. in Eckfeldt) Wetmore - Wetmore (1976: 308), Egan (1978: 155)
  298. Peltula patellata (Bagl.) Swinscow & Krog - Wetmore (1976: 308 as Peltula polyspora), Egan (1978: 155 as Peltula polyspora)
  299. Peltula placodizans (Zahlbr.) Wetmore - Wetmore (1976: 308), Egan (1978: 155)
  300. Peltula radicata Nyl. - Wetmore (1976: 308), Egan (1978: 155)
  301. Peltula richardsii (Herre) Wetmore - Wetmore (1976: 309), Egan (1978: 155)

  302. Pertusaria hymenea (Ach.) Schaer. - Egan (1978: 155)
  303. Pertusaria leioplaca (Ach.) DC. - Reese & Tucker (1970: 698), Egan (1978: 155)
  304. Pertusaria pustulata (Ach.) Duby - Egan (1978: 155)
  305. Pertusaria texana Müll. Arg. - Müller Aargau (xx: xx Protologue), Egan (1978: 155) Type in Geneva, Switzerland G
  306. Pertusaria paratuberculifera Dibben - Reese & Tucker (1970: 698 erroneously as Pertusaria tuberculifera), Egan (1978: 155 erroneously as Pertusaria tuberculifera)
  307. Pertusaria xanthodes Müll. Arg. - Müller Aargau (xx: xx Protologue), Egan (1978: 155) Type

  308. Phaeographis dendritica (Ach.) Müll. Arg. - Reese & Tucker (1970: 697), Egan (1978: 155)

  309. Phaeophyscia ciliata (Hoffm.) Moberg - Reese & Tucker (1970: 699 as Physica ciliata), Egan (1978: 155 as Physica ciliata)
  310. Phaeophyscia hirsuta (Mereschk.) Essl. - Egan (1978: 155 as Physcia hirsuta)
  311. Phaeophyscia hispidula (Ach.) Essl. - Wetmore (1976: 310 as Physcia setosa), Egan (1978: 155 as Physcia hispidula)
  312. Phaeophyscia leana (Tuck.) Essl. - Egan (1978: 155 as Physcia leana)
  313. Phaeophyscia nigricans (Flörke) Moberg - Wetmore (1976: 310 as Physcia nigricans), Egan (1978: 155 as Physcia nigricans)
  314. Phaeophyscia orbicularis (Neck.) Moberg - Reese & Tucker (1970: 699 as Physcia ), Wetmore (1976: 310), Egan (1978: 155 as Physcia orbicularis)
  315. Phaeophyscia rubropulchra (Degel.) Essl. - Egan (1978: 155 as Physcia rubropulchra)
  316. Phaeophyscia squarrosa Kashiw. - Egan (1978: 155 as Physcia lacinulata)

  317. Porina nucula Ach. - Reese & Tucker (1970: 699)

  318. Phyllopsora parvifolia (Pers.) Müll. Arg. - Egan (1978: 153 as Lecidea parvifolia)

  319. Physcia aipolia (Ehrh. ex Humb.) Fürnr. - Reese & Tucker (1970: 699), Wetmore (1976: 310), Egan (1978: 155)
  320. Physcia albinea (Ach.) Malbr. - Wetmore (1976: 310), Egan (1978: 155)
  321. Physcia americana G. Merr. - Reese & Tucker (1970: 699 erroneously as Physica tribacoides), Wetmore (1976: 310 erroneously as Physica tribacoides), Egan (1978: 155 erroneously as Physica tribacoides)
  322. Physcia biziana (A. Massal.) Zahlbr. - Egan (1978: 155)
  323. Physcia clementei (Sm.) Lynge - Egan (1978: 155)
  324. Physcia convexa Müll. Arg. - Wetmore (1976: 310), Egan (1978: 155)
  325. Physcia dubia (Hoffm.) Lettau - Wetmore (1976: 310), Egan (1978: 155), Egan (1978: 155 as Physcia intermedia)
  326. Physcia halei J. W. Thomson - Egan (1978: 155)
  327. Physcia mexicana B. de Lesd. - Wetmore (1976: 310), Egan (1978: 155)
  328. Physcia millegrana Degel. - Egan (1978: 155)
  329. Physcia phaea (Tuck.) J. W. Thomson - Wetmore (1976: 310 as Physcia callosa), Egan (1978: 155 as Physcia callosa)
  330. Physcia stellaris (L.) Nyl. - Wetmore (1976: 310), Egan (1978: 155)
  331. Physcia subtilis Degel. - Egan (1978: 155)
  332. Physcia subalbinea Räsänen - Wetmore (1976: 310 as Physcia wainioi), Egan (1978: 155 as Physcia wainioi)

  333. Physconia grisea (Lam.) Poelt - Wetmore (1976: 310 as Physcia grisea), Egan (1978: 155)

  334. Placidium arboreum (Schwein. ex E. Michener) Lendemer - Wetmore (1976: 303 as Dermatocarpon tuckermanii), Egan (1978: 152 as Dermatocarpon tuckermanii)
  335. Placidium lachneum (Ach.) B. de Lesd. - Egan (1978: 152 as Dermatocarpon lachneum)
  336. Placidium rufescens (Ach.) Breuss - Egan (1978: 152 as Dermatocarpon rufescens)
  337. Placidium squamulosum (Ach.) Breuss - Wetmore (1976: 303 as Dermatocarpon hepaticum), Egan (1978: 152 as Dermatocarpon hepaticum)

  338. Pleopsidium chlorophanum (Wahlenb.) Zopf - Egan (1978: 151 as Acarospora chlorophana), Egan (1978: 151 as Acarospora texana)

  339. Polycauliona candelaria (L.) Frödén, Arup, & Søchting - Wetmore (1976: 312 as Xanthoria candelaria), Egan (1978: 157 as Xanthoria candelaria)
  340. Polycauliona polycarpa (Hoffm.) Frödén, Arup, & Søchting - Wetmore (1976: 312 as Xanthoria polycarpa), Egan (1978: 157 as Xanthoria polycarpa), Egan (1978: 157 as Xanthoria ramulosa)

  341. Polymeridium subcinereum (Nyl.) R. C. Harris - Egan (1978: 155 as Porina subcinerea)

  342. Porina nucula Ach. - Egan (1978: 155)

  343. Pseudevernia intensa (Nyl.) Hale & W. L. Culb. - Wetmore (1976: 311), Egan (1978: 155)

  344. Pseudoparmelia uleana (Müll. Arg.) Elix & T. H. Nash - Egan (1978: 155 as Pseudoparmelia sphaerospora)

  345. Psora crenata (Taylor) Reinke - Egan (1978: 153 as Lecidea coroniformis), Egan (1978: 153 as Lecidea crenata)
  346. Psora decipiens (Hedw.) Hoffm. - Egan (1978: 153 as Lecidea decipiens)
  347. Psora globifera (Ach.) A. Massal. - Egan (1978: 153 as Lecidea globifera)
  348. Psora icterica (Mont.) Müll. Arg. - Egan (1978: 153 as Lecidea icterica)
  349. Psora russellii (Tuck.) A. Schneid. - Egan (1978: 153 as Lecidea russellii)

  350. Psorula rufonigra (Tuck.) Gotth. Schneid. - Egan (1978: 153 as Lecidea rufonigra)

  351. Punctelia bolliana (Müll. Arg.) Krog - Wetmore (1976: 304 as Parmelia bolliana), Egan (1978: 154 as Parmelia bolliana)
  352. Punctelia hypoleucites (Nyl.) Krog - Wetmore (1976: 304 as Parmelia hypoleucites), Egan (1978: 154 as Parmelia hypoleucites)
  353. Punctelia perreticulata (Räsänen) G. Wilh. & Ladd - Wetmore (1976: 307 as Parmelia perreticulata), Egan (1978: 154 as Parmelia perreticulata)
  354. Punctelia rudecta (Ach.) Krog - Reese & Tucker (1970: 698 as Parmelia rudecta), Egan (1978: 154 as Parmelia rudecta)
  355. Punctelia subpraesignis (Nyl.) Krog - Egan (1978: 154 as Parmelia subpraesignis)

  356. Pyrenopsis viridirufa (Tuck.) Tuck. - Tuckerman (xx: xx as Synalissa viridirufa Type), Egan (1978: 155)

  357. Pyrenula aspistea (Afzel. ex Ach.) Ach. - Reese & Tucker (1970: 699), Egan (1978: 156)
  358. Pyrenula cruenta (Mont.) Vain. - Reese & Tucker (1970: 699 as Melanotheca cruenta), Egan (1978: 154 as Melanotheca cruenta)
  359. Pyrenula mamillana (Ach.) Trevis. - Reese & Tucker (1970: 699), Egan (1978: 156)
  360. Pyrenula microcarpa Müll. Arg. - Tucker & Harris (1980: 16 as Pyrenula texana Type in FH-TUCK)
  361. Pyrenula pyrenuloides (Mont.) R. C. Harris - Egan (1978: 151 as Anthracothecium pyrenuloides)

  362. Pyxine caesiopruinosa (Tuck.) Imshaug - Egan (1978: 156)
  363. Pyxine sorediata (Ach.) Mont. - Egan (1978: 156 as Pyxine eschweileri), Egan (1978: 156)

  364. Ramalina ahtii Kashiw. & T. H. Nash - Kashiwadani & Nash (1997: 88)
  365. Ramalina complanata (Sw.) Ach. - Wetmore (1976: 311), Egan (1978: 156)
  366. Ramalina denticulata (Eschw.) Nyl. - Egan (1978: 156)
  367. Ramalina farinacea (L.) Ach. - Egan (1978: 156)
  368. Ramalina americana Hale - Egan (1978: 156 erroneously as Ramalina fastigiata)
  369. Ramalina fraxinea (L.) Ach. - Egan (1978: 156)
  370. Ramalina montagnei De Not. - Egan (1978: 156)
  371. Ramalina peruviana Ach. - Egan (1978: 156)
  372. Ramalina pollinaria (Westr.) Ach. - Wetmore (1976: 311), Egan (1978: 156)
  373. Ramalina sinensis Jatta - Wetmore (1976: 311), Egan (1978: 156)
  374. Ramalina sorediantha Nyl. - Egan (1978: 156)
  375. Ramalina stenospora Müll. Arg. - Egan (1978: 156)
  376. Ramalina tenuis (Tuck.) Merr. - Egan (1978: 156)
  377. Ramalina unifolia J. W. Thomson - Thomson (1990: 341)
  378. Ramalina usnea (L.) Howe - Egan (1978: 156)
  379. Ramalina willeyi Howe - Egan (1978: 156)

  380. Reimnitzia santensis (Tuck.) Kalb - Reese & Tucker (1970: 697 as Leptotrema heterosporum), Egan (1978: 154 as Leptotrema santense), Egan (1978: 154 as Leptotrema heterosporum)

  381. Rhizocarpon badioatrum (Flörke ex Spreng.) Th. Fr. - Egan (1978: 156)

  382. Rhizoplaca chrysoleuca (Sm.) Zopf - Egan (1978: 153 as Lecanora chrysoleuca)
  383. Rhizoplaca melanophthalma (DC.) Leuckert & Poelt - Egan (1978: 153 as Lecanora melanophthalma)
  384. Rhizoplaca peltata (Ram.) Leuckert & Poelt - Egan (1978: 153 as Lecanora peltata)

  385. Rinodina bischoffii (Hepp) A. Massal. - Egan (1978: 156)
  386. Rinodina exigua (Ach.) S. Gray - Egan (1978: 156)
  387. Rinodina maculans Magn. - Reese & Tucker (1970: 699 as Rinodina applanata), Egan (1978: 156 as Rinodina applanata)

  388. Roccella decipiens Darb. - Egan (1978: 156 as Roccella babingtonii), Galloway et al. (1996: 76 as Roccella babingtonii)

  389. Rostania callibotrys (Tuck.) Otálora, P. M. Jørg. & Wedin - Egan (1978: 152 as Collema callibotrys)

  390. Rusavskia elegans (Link) S. Y. Kondr. & Kärnefelt - Egan (1978: 157 as Xanthoria elegans)

  391. Sanguinotrema wightii (Taylor) Lücking - Reese & Tucker (1970: 697 as Leptotrema ravenelii), Egan (1978: 154 as Leptotrema ravenelii), Egan (1978: 154 as Leptotrema wightii)

  392. Sarcographa tricosa (Ach.) Müll. Arg. - Egan (1978: 156)

  393. Sarcogyne arenosa H. Magn. - Egan (1978: 156 as Sarcogyne bolleana)
  394. Sarcogyne clavus (Ram.) Kremp. - Egan (1978: 156)
  395. Sarcogyne regularis Körb. - Egan (1978: 156)

  396. Scytinium juniperinum (Tuck.) Otálora, P.M. Jørg. & Wedin - Egan (1978: 153 as Leptogium juniperinum)
  397. Scytinium lichenoides (L.) Otálora, P. M. Jørg. & Wedin - Wetmore (1976: 304 as Leptogium lichenoides), Egan (1978: 153 as Leptogium lichenoides)
  398. Scytinium platynum (Tuck.) Otálora, P. M. Jørg. & Wedin - Egan (1978: 154 as Leptogium platynum)
  399. Scytinium plicatile (Ach.) Otálora, P. M. Jørg. & Wedin - Egan (1978: 154 as Leptogium plicatile)

  400. Speerschneidera euploca (Tuck.) Trev. - Tuckerman (1858: 424 as Physcia euploca Type in FH), Trevisan (1861: 52), Egan (1978: 156), Hafellner & Egan (1981: 22)

  401. Sticta beauvoisii Delise - McDonald (2003: 72)

  402. Strigula complanata (Fée) Mont. - Egan (1978: 156)
  403. Strigula smaragdula Fr.: Fr. - Egan (1978: 156 as Strigula elegans)

  404. Syncesia graphica (Fr.) Tehler - Egan (1978: 152 as Chiodecton perplexum)

  405. Synalissa symphorea (Ach.) Nyl. - Wetmore (1976: 311), Egan (1978: 156)

  406. Teloschistes chrysophthalmus (L.) Th. Fr. - Wetmore (1976: 311), Egan (1978: 156)
  407. Teloschistes exilis (Michx.) Vain. - Egan (1978: 156)
  408. Teloschistes flavicans (Sw.) Norm. - Wetmore (1976: 311), Egan (1978: 156)

  409. Tephromela atra (Hudson) Hafellner - Egan (1978: 153 as Lecanora atra)

  410. Thallinocarpon nigritellum (Lettau) P. M. Jørg. - Wetmore (1976: 312 as Thyrea nigritella), Egan (1978: 156 as Thyrea nigritella)

  411. Thelotrema monospermum R. C. Harris - Reese & Tucker (1970: 697 erroneously as Leptotrema monosporum), Egan (1978: 154 erroneously as Leptotrema monosporum)
  412. Thelotrema subtile Tuck. - Egan (1978: 154 as Ocellularia subtilis)
  413. Thelotrema lepadinum (Ach.) Ach. - Egan (1978: 156)

  414. Thyrea confusa (Schaer.) A. Massal. - Wetmore (1976: 312 erroneously as Thyrea pulvinata), Egan (1978: 156 erroneously as Thyrea pulvinata)

  415. Trinathotrema stictideum (Nyl.) Vezda - Egan (1978: 154 as Ocellularia stictidea)

  416. Trypethelium ochroleucum (Eschw.) Nyl. - Egan (1978: 156 as Trypethelium pallescens)
  417. Trypethelium tropicum (Ach.) Müll. Arg. - Egan (1978: 156)
  418. Trypethelium virens Tuck. ex E. Michener - Reese & Tucker (1970: 699)m Egan (1978: 156)

  419. Tuckermanella coralligera (W. A. Weber) Essl. - Wetmore (1976: 302 as Cetraria coralligera), Egan (1978: 152 as Cetraria coralligera)
  420. Tuckermanella fendleri (Nyl.) Essl. - Wetmore (1976: 302 as Cetraria fendleri), Egan (1978: 152 as Cetraria fendleri)

  421. Umbilicaria vellea (L.) Ach. - Wetmore (1976: 312), Egan (1978: 156)

  422. Usnea amblyoclada (Müll. Arg.) Zahlbr. - Clerc & Herrera-Campos (1997: 287)
  423. Usnea angulata Ach. - Egan (1978: 156)
  424. Usnea baileyi (Stirt.) Zahlbr. - Egan (1978: 156 as Usnea antillarum)
  425. Usnea intermedia (A. Massal.) Jatta - Wetmore (1976: 312 as Usnea arizonica), Egan (1978: 156 as Usnea arizonica)
  426. Usnea cavernosa Tuck. - Egan (1978: 156)
  427. Usnea cirrosa Mot. - Wetmore (1976: 312), Egan (1978: 156)
  428. Usnea dasypoga (Ach.) Röhl - Egan (1978: 156)
  429. Usnea diplotypus Vain. - Wetmore (1976: 312), Egan (1978: 156)
  430. Usnea florida (L.) Wigg. - Egan (1978: 156)
  431. Usnea hirta (L.) Weber ex F. H. Wigg. - Wetmore (1976: 312), Egan (1978: 156)
  432. Usnea mutabilis Stirt. - Egan (1978: 156)
  433. Usnea strigosa (Ach.) A. Eat. subsp. rubiginea (Michx.) A. Massal. - Egan (1978: 156 as Usnea rubiginea)
  434. Usnea strigosa (Ach.) A. Eat. subsp. strigosa - Egan (1978: 156)
  435. Usnea subfloridana Stirt. - Wetmore (1976: 312), Egan (1978: 156)
  436. Usnea trichodea Ach. - Egan (1978: 156)

  437. Vahliella leucophaea (Vahl) P. M. Jørg. - Egan (1978: 154 as Pannaria microphylla)

  438. Varicellaria velata (Turner) I. Schmitt & Lumbsch - Reese & Tucker (1970: 698 as Pertusaria velata), Egan (1978: 155 as Pertusaria velata)

  439. Verrucaria muralis Ach. - Egan (1978: 156)

  440. Vulpicida viridis (Schwein.) J.-E. Mattsson & M. J. Lai - Egan (1978: 152 as Cetraria viridis)

  441. Wetmoreana texana (Wetmore & Kärnefelt) Arup, Søchting & Frödén - Wetmore & Kärnefelt (1998: 247 Type)

  442. Xanthomendoza fallax (Hepp) Söchting, Kärnefelt & S. Kondr. - Wetmore (1976: 312 as Xanthoria fallax), Egan (1978: 157 as Xanthoria fallax)

  443. Xanthoparmelia arida Egan & Derstine - Egan (1978: 157 erroneously as Xanthoparmelia lecanorica), Egan & Derstine (1978: 607 Type in Washington, USA US)
  444. Xanthoparmelia barbatica (Elix) Egan - Elix (xx: xx Type), Egan (1982: 129)
  445. Xanthoparmelia chiricahuensis (R. Anderson & W. Web.) O. Blanco et al. - Egan (1978: 154 as Parmelia chiricahuensis)
  446. Xanthoparmelia coloradoensis (Gyelnik) Hale - Wetmore (1976: 307 erroneously as Xanthoparmelia taractica), Egan (1978: 157 erroneously as Xanthoparmelia taractica)
  447. Xanthoparmelia conspersa (Ach.) Hale - Reese & Tucker (1970: 698 as Parmelia conspersa), Wetmore (1976: 304 as Parmelia conspersa), Egan (1978: 156)
  448. Xanthoparmelia cumberlandia (Gyeln.) Hale - Egan (1978: 156)
  449. Xanthoparmelia dierythra (Hale) Hale - Wetmore (1976: 304 as Parmelia dierythra), Egan (1978: 156)
  450. Xanthoparmelia eganii Elix & Nash - Elix & Nash (1999: 419 Type in Herb. Egan)
  451. Xanthoparmelia hypofusca (Gyeln.) Hodkinson & Lendemer - Wetmore (1976: 307 erroneously as Parmelia tasmanica), Egan (1978: 157 erroneously as Xanthoparmelia tasmanica)
  452. Xanthoparmelia hypomelaena (Hale) Hale - Egan (1978: 157)
  453. Xanthoparmelia lavicola (Hale) Hale - Wetmore (1976: 304 as Parmelia kurokawae), Egan (1978: 157 as Xanthoparmelia kurokawae)
  454. Xanthoparmelia lineola (E. C. Berry) Hale - Wetmore (1976: 304 as Parmelia lineola), Egan (1978: 157)
  455. Xanthoparmelia maricopensis Nash & Elix - Nash & Elix (1986: 454)
  456. Xanthoparmelia mexicana (Gyeln.) Hale - Egan (1978: 157)
  457. Xanthoparmelia novomexicana (Gyeln.) Hale - Wetmore (1976: 307 as Parmelia novomexicana), Egan (1978: 157)
  458. Xanthoparmelia plittii (Gyeln.) Hale - Egan (1978: 157)
  459. Xanthoparmelia psoromifera (Kurok.) Hale - Wetmore (1976: 307 as Parmelia psoromifera), Egan (1978: 157)
  460. Xanthoparmelia subramigera (Gyeln.) Hale - Egan (1978: 157)
  461. Xanthoparmelia tucsonensis (T. H. Nash) Egan - Egan (1978: 157)
  462. Xanthoparmelia weberi (Hale) Hale - Egan (1978: 157)

  463. Xanthopsorella texana (W. A. Weber) Kalb & Hafellner - Egan (1978: 153 as Lecanora texana), Egan (1978: 153 as Psora texana)

  464. Xanthoria parietina (L.) Th. Fr. - Egan (1978: 157)