Checklist of lichens of Alberta (Canada)
31 December 2018
- Acarospora glaucocarpa (Wahlenb.) Körb. - Bird (1973: 395 First record), John (1989: 108 as Acarospora cervina var. glaucocarpa), Thomson & Ahti (1994: 142), Thomson (1997: 25)
- Acarospora fuscata (Schrad.) Arnold - John (1989: 108)
- Acarospora schleicheri (Ach.) A. Massal. - Thomson (1997: 33)
- Acarospora strigata (Nyl.) Jatta - Bird (1973: 396)
- Acarospora veronensis A. Massal. - Bird (1973: 396)
- Acolium inquinans (Sm.) A. Massal. - Bird (1973: 401 as Cyphelium inquinans First record), Thomson (1997: 212 as Cyphelium inquinans)
- Adelolecia pilati (Hepp) Hertel & Hafellner - Thomson & Ahti (1994: 142)
- Alectoria ochroleuca (Hoffm.) A. Massal. - Thomson (1984: 37), Thomson & Ahti (1994: 142)
- Alectoria sarmentosa (Ach.) Ach. - Bird (1973: 398), Achuff & La Roi (1977: 143)
- Alectoria vexillifera (Nyl.) Stizenb. - Thomson (1984: 38)
- Allantoparmelia alpicola (Th. Fr.) Essl. - Thomson (1984: 299 as Parmelia alpicola)
- Allocetraria madreporiformis (Ach.) Kärnefelt & A. Thell - Thomson (1984: 206 as Dactylina madreporiformis)
- Amandinea punctata (Hoffm.) Coppins & Scheid. - Bird (1973: 399 as Buellia punctata), Thomson (1997: 138 as Buellia punctata)
- Amundsenia approximata (Lynge) Søchting, Arup & Frödén - Thomson (1997: 151 as Caloplaca approximata)
- Arctoparmelia centrifuga (L.) Hale - John (1989: 108)
- Arctoparmelia incurva (Pers.) Hale - John (1989: 108)
- Arctoparmelia subcentrifuga (Oxner) Hale - John (1989: 108)
- Arthonia patellulata Nyl. - Bird (1973: 401 First record)
- Arthrorhaphis alpina (Schaer.) R. Sant. - John (1989: 108)
- Aspicilia anseris (Lynge) J. W. Thomson - Thomson (1997: 61)
- Aspicilia candida (Anzi) Hue - Thomson (1997: 67)
- Aspicilia cinerea (L.) Körb. - John (1989: 108), Thomson (1997: 68)
- Aspicilia rolleana Hue - Bird (1973: 396 as Lecanora rolleana First record)
- Aspicilia subradians (Nyl.) Hue - Thomson (1997: 94)
- Aspicilia supertegens Arnold - Thomson (1997: 95)
- Athallia holocarpa (Hoffm.) Wade - Bird (1973: 400 as Caloplaca holocarpa), Douglas et al. (1981: 1457 as Caloplaca holocarpa), John (1989: 108 as Caloplaca holocarpa), Thomson (1997: 164 as Caloplaca holocarpa)
- Bacidia bagliettoana (A. Massal. & De Not.) Jatta - Bird (1973: 393 First record)
- Baeomyces rufus (Huds.) Rebent. - Thomson (1984: 52)
- Bellemerea alpina (Sommerf.) Clauz. & Roux - John (1989: 108), Thomson (1997: 115)
- Bellemerea cinereorufescens (Ach.) Clauz. & Roux - John (1989: 108), Thomson (1997: 116)
- Biatora globulosa (Flörke) Th. Fr. - Bird (1973: 393 as Catillaria globulosa First record)
- Biatora vernalis (L.) Fr. - Bird (1973: 394 as Lecidea vernalis), Douglas et al. (1981: 1458 as Lecidea vernalis), Thomson (1997: 389 as Lecidea vernalis)
- Biatorella hemisphaerica Anzi - Thomson (1997: 119)
- Bilimbia lobulata (Sommerf.) Hafellner & Coppins - Bird (1973: 394 as Toninia lobulata First record), Thomson (1997: 617 as Toninia lobulata)
- Bilimbia sabuletorum (Schreb.) Arnold - Thomson (1997: 422 as Mycobilimbia sabuletorum)
- Blennothallia crispa (Huds.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 183 as Collema crispum)
- Brodoa oroarctica (Krog) Goward - Thomson (1984: 239 as Hypogymnia oroarctica), John (1989: 108)
- Bryobilimbia hypnorum (Lib.) Fryday, Printzen & S. Ekman - Thomson (1997: 351 as Lecidea hypnorum)
- Bryonora castanea (Hepp) Poelt - Thomson (1997: 122)
- Bryoplaca jungermanniae (Vahl) Søchting, Frödén & Arup - Bird (1973: 400 as Caloplaca jungermanniae), Thomson (1997: 166 as Caloplaca jungermanniae)
- Bryoplaca sinapisperma (DC.) Søchting, Frödén & Arup - Bird (1973: 400 as Blastenia sinapisperma), Thomson (1997: 171 as Caloplaca sinapisperma)
- Bryoplaca tetraspora (Nyl.) Søchting, Frödén & Arup - John (1989: 108 as Caloplaca tetraspora), Thomson (1997: 172 as Caloplaca tetraspora)
- Bryoria capillaris (Ach.) Brodo & D. Hawksw. - Thomson (1984: 55)
- Bryoria chalybeiformis (L.) Brodo & D. Hawksw. - Bird (1973: 398 as Alectoria chalybeiformis), Thomson (1984: 56)
- Bryoria fremontii (Tuck.) Brodo & D. Hawksw. - Bird (1973: 398 as Alectoria fremontii), Spribille (2002: 20 as Bryoria tortuosa)
- Bryoria furcellata (Fr.) Brodo & D. Hawksw. - Douglas et al. (1981: 1457)
- Bryoria fuscescens (Gyeln.) Brodo & D. Hawksw. - Douglas et al. (1981: 1457), Addison (1984: 299), Thomson (1984: 57)
- Bryoria glabra (Mot.) Brodo & D. Hawksw. - Bird (1973: 398 as Alectoria glabra), Thomson (1984: 58)
- Bryoria implexa (Hoffm.) Brodo & D. Hawksw. - Bird (1973: 398 as Alectoria implexa)
- Bryoria lanestris (Ach.) Brodo & D. Hawksw. - Douglas et al. (1981: 1457), Thomson (1984: 59)
- Bryoria nadvornikiana (Gyel.) Brodo & D. Hawksw. - Thomson (1984: 61)
- Bryoria pseudofuscescens (Gyelnik) Brodo & D. Hawksw. - Achuff & La Roi (1977: 143 as Alectoria pseudofuscescens)
- Bryoria simplicior (Vain.) Brodo & D. Hawksw. - Thomson (1984: 65)
- Bryoria vrangiana (Gyeln.) Brodo & D. Hawksw. - Thomson (1984: 69)
- Buellia disciformis (Fr.) Mudd - Bird (1973: 399), Thomson (1997: 129)
- Buellia dispersa A. Massal. - Bird (1973: 399 as Buellia retrovertens First record)
- Buellia elegans Poelt - Thomson (1997: 130)
- Buellia epigaea (Hoffm.) Tuck. - Bird (1973: 399)
- Buellia erubescens Arnold - Bird (1973: 399 as Buellia zahlbruckneri First record), Douglas et al. (1981: 1457 as Buellia zahlbruckneri), Thomson (1997: 131)
- Buellia lacteoidea B. de Lesd. - John (1989: 108)
- Buellia vilis Th. Fr. - Thomson (1997: 141)
- Calicium pinicola (Tibell) M. Prieto & Wedin - Spribille (2002: 21 as Cyphelium pinicola)
- Calicium salicinum Pers. - Bird (1973: 401 First record), Douglas et al. (1981: 1457)
- Calicium tigillare (Ach.) Pers. - Bird (1973: 401 as Cyphelium tigillare), Thomson (1997: 214 as Cyphelium tigillare)
- Calicium trabinellum (Ach.) Ach. - Thomson (1997: 145)
- Calicium viride Pers. - Bird (1973: 401 First record), Thomson (1997: 146)
- Callome multipartita (Sm.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 188 as Collema multipartitum)
- Caloplaca cerina (Ehrh.) Th. Fr. var. cerina - Bird (1973: 400), Douglas et al. (1981: 1457), John (1989: 108), Thomson (1997: 154)
- Caloplaca cerina (Ehrh.) Th. Fr. var. chloroleuca (Sm.) Th. Fr. - Bird (1973: 400 as Caloplaca stillicidiorum), John (1989: 108 as Caloplaca stillicidiorum), Thomson (1997: 172 as Caloplaca stillicidiorum)
- Caloplaca epithallina Lynge - John (1989: 108)
- Caloplaca fraudans (Th. Fr.) Oliv. - Douglas et al. (1981: 1457), Thomson (1997: 162)
- Caloplaca saxicola (Hoffm.) Nordin - Thomson (1997: 169)
- Caloplaca tornoensis H. Magn. - Thomson (1997: 175)
- Calvitimela armeniaca (DC. in Lam. & DC.) Hafellner - Thomson (1997: 60 as Tephromela armeniaca)
- Candelaria concolor (Dicks.) B. Stein - Bird (1973: 396)
- Candelariella aurella (Hoffm.) Zahlbr. - Bird (1973: 397), Thomson (1997: 182)
- Candelariella canadensis H. Magn. - Westberg (2010: 121)
- Candelariella citrina B. de Lesd. - Thomson (1997: 187 as Candelariella terrigena)
- Candelariella efflorescens R.C. Harris & W.R. Buck - Thomson (1997: 184)
- Candelariella vitellina (Hoffm.) Müll. Arg. f. vitellina - Bird (1973: 397), Douglas et al. (1981: 1457), John (1989: 108), Thomson (1997: 189)
- Catapyrenium cinereum (Pers.) Körb. - Thomson (1984: 211 as Dermatocarpon cinereum), Thomson (1984: 215 as Dermatocarpon hepaticum)
- Catillaria glauconigrans (Tuck.) Hasse - Bird (1973: 393)
- Cetraria aculeata (Schreb.) Fr. - Thomson (1984: 198 as Cornicularia aculeata)
- Cetraria ericetorum Opiz - Bird (1973: 397), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1457), Thomson (1984: 79)
- Cetraria islandica (L.) Ach. - Thomson (1984: 84)
- Cetrariella commixta (Nyl.) A. Thell & Kärnefelt - Bird (1973: 397 as Cetraria commixta), Thomson (1984: 75 as Cetraria commixta)
- Chaenotheca chrysocephala (Turner ex Ach.) Th. Fr. - Douglas et al. (1981: 1457), Thomson (1997: 205)
- Chaenotheca furfuracea (L.) Tibell - Douglas et al. (1981: 1458 as Coniocybe furfuracea), Thomson (1997: 210 as Coniocybe furfuracea)
- Circinaria caesiocinerea (Nyl. ex Malbr.) A. Nordin, S. Savić & Tibell - John (1989: 108 as Aspicilia caesiocinerea), Thomson (1997: 65 as Aspicilia caesiocinerea)
- Circinaria hispida (Mereschk.) A. Nordin, Savic & Tibell - Bird (1973: 396 as Agrestia hispida)
- Cladonia amaurocraea (Flörke) Schaer. - Douglas et al. (1981: 1457), Thomson (1984: 107)
- Cladonia arbuscula (Wallr.) Rabenh. - Bird (1973: 394 as Cladina arbuscula), Achuff & La Roi (1977: 143 as Cladina arbuscula), Douglas et al. (1981: 1457 as Cladina arbuscula), Thomson (1984: 110)
- Cladonia bacillaris (Ach.) Nyl. - Bird (1973: 394)
- Cladonia bacilliformis (Nyl.) Sarnth. - Thomson (1984: 112)
- Cladonia bellidiflora (Ach.) Schaer. - Douglas et al. (1981: 1457)
- Cladonia botrytes (K. G. Hagen) Willd. - Bird (1973: 394), Douglas et al. (1981: 1457), Thomson (1984: 114)
- Cladonia cariosa (Ach.) Spreng. - Bird (1973: 394), Douglas et al. (1981: 1457), Thomson (1984: 116)
- Cladonia carneola (Fr.) Fr. - Thomson (1984: 117)
- Cladonia cenotea (Ach.) Schaer. - Bird (1973: 394), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1457), Thomson (1984: 118)
- Cladonia chlorophaea (Flörke ex Sommerf.) Spreng. - Bird (1973: 394), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1457), Thomson (1984: 119)
- Cladonia coccifera (L.) Willd. - Bird (1973: 395), Douglas et al. (1981: 1458), Thomson (1984: 121)
- Cladonia coniocraea (Flörke) Spreng. - Bird (1973: 395), Douglas et al. (1981: 1458), Thomson (1984: 122)
- Cladonia cornuta (L.) Hoffm. - Bird (1973: 395), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1458), Thomson (1984: 124)
- Cladonia crispata (Ach.) Flot. - Douglas et al. (1981: 1458), Thomson (1984: 125)
- Cladonia cristatella Tuck. - Bird (1973: 395), Douglas et al. (1981: 1458)
- Cladonia cryptochlorophaea Asahina - Thomson (1984: 126)
- Cladonia cyanipes (Sommerf.) Nyl. - Thomson (1984: 127)
- Cladonia deformis (L.) Hoffm. - Bird (1973: 395), Douglas et al. (1981: 1458), Thomson (1984: 129)
- Cladonia digitata (L.) Hoffm. - Thomson (1984: 131)
- Cladonia ecmocyna Leight. - Bird (1973: 395), Thomson (1984: 132)
- Cladonia fimbriata (L.) Fr. - Bird (1973: 395), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1458), Thomson (1984: 133)
- Cladonia furcata (Huds.) Schrad. - Bird (1973: 395), Douglas et al. (1981: 1458)
- Cladonia glauca Flörke - Thomson (1984: 135)
- Cladonia gracilis (L.) Willd. subsp. gracilis - Achuff & La Roi (1977: 143), Douglas et al. (1981: 1458), Thomson (1984: 137)
- Cladonia gracilis (L.) Willd. subsp. turbinata (Ach.) Ahti - Thomson (1984: 136)
- Cladonia grayi G. Merr. ex Sandst. - Thomson (1984: 138)
- Cladonia macilenta Hoffm. - Thomson (1984: 111 as Cladonia bacillaris)
- Cladonia macrophylla (Schaer.) Stenham. - Douglas et al. (1981: 1458), Thomson (1984: 141)
- Cladonia macrophyllodes Nyl. - Bird (1973: 395), Thomson (1984: 143)
- Cladonia mitis Sandst. - Bird (1973: 394 as Cladina mitis), Achuff & La Roi (1977: 143 as Cladina mitis), Douglas et al. (1981: 1457 as Cladina mitis), Thomson (1984: 148)
- Cladonia multiformis Merr. - Bird (1973: 395), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1458), Thomson (1984: 149)
- Cladonia phyllophora Ehrh. ex Hoffm. - Bird (1973: 395), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1458), Thomson (1984: 153), John (1989: 108)
- Cladonia pleurota (Flörke) Schaer. - Bird (1973: 395), Thomson (1984: 154)
- Cladonia pocillum (Ach.) Rich. - Bird (1973: 395), Thomson (1984: 156)
- Cladonia pyxidata (L.) Hoffm. - Bird (1973: 395), Douglas et al. (1981: 1458), Thomson (1984: 158), John (1989: 108)
- Cladonia ramulosa (Flörke) Th. Fr. - Douglas et al. (1981: 1458 as Cladonia pityrea)
- Cladonia rangiferina (L.) Wigg. - Bird (1973: 394 as Cladina rangiferina), Douglas et al. (1981: 1457 as Cladina rangiferina), Thomson (1984: 159)
- Cladonia scabriuscula (Del. in Duby) Nyl. - Bird (1973: 395 First record), Thomson (1984: 160)
- Cladonia squamosa (Scop.) Hoffm. - Thomson (1984: 161)
- Cladonia stellaris (Opiz) Pouzar & Vezda - Achuff & La Roi (1977: 143 as Cladina alpestris), Douglas et al. (1981: 1457 as Cladina stellaris), Thomson (1984: 163), Thomson (1984: 104 as Cladonia aberrans)
- Cladonia straminea (Sommerf.) Flörke - Thomson (1984: 147 erroneously as Cladonia metacorallifera fide Timdal & Tønsberg 2012 kontrollieren)
- Cladonia stricta (Nyl.) Nyl. - Thomson (1984: 164)
- Cladonia subfurcata (Nyl.) Arnold - Thomson (1984: 166)
- Cladonia subulata (L.) Wigg. - Bird (1973: 395), Douglas et al. (1981: 1458), Thomson (1984: 168)
- Cladonia sulphurina (Michx.) Fr. - Bird (1973: 395 as Cladonia gonecha), Douglas et al. (1981: 1458), Thomson (1984: 169)
- Cladonia symphycarpa (Ach.) Fr. - Thomson (1984: 170)
- Cladonia turgida Ehrh. ex Hoffm. - Thomson (1984: 172)
- Cladonia uncialis (L.) Wigg. - Bird (1973: 395), Douglas et al. (1981: 1458), Thomson (1984: 173)
- Cladonia verticillata (Hoffm.) Schaer. - Bird (1973: 395), Douglas et al. (1981: 1458), Thomson (1984: 174)
- Collema flaccidum (Ach.) Ach. - Bird (1966: 3), Thomson (1984: 186)
- Collema nigrescens (Huds.) DC. - Bird (1973: 392 First record)
- Dactylina arctica (Hook. f.) Nyl. - Thomson (1984: 203)
- Dactylina beringica C. D. Bird & J. W. Thomson - Thomson (1984: 204)
- Dactylina ramulosa (Hook. f.) Tuck. - Thomson (1984: 207)
- Dermatocarpon luridum (With.) J. R. Laundon - Thomson (1984: 213 as Dermatocarpon fluviatile)
- Dermatocarpon intestiniforme (Körb.) Hasse - Thomson (1984: 216)
- Dermatocarpon miniatum (L.) W. Mann - Bird (1973: 401), Thomson (1984: 219)
- Dermatocarpon moulinsii (Mont.) Zahlbr. - Douglas et al. (1981: 1458)
- Dimelaena oreina (Ach.) Norman - John (1989: 108), Thomson (1997: 216)
- Diploschistes muscorum (Scop.) R. Sant. - Thomson (1997: 218)
- Diploschistes scruposus (Schreb.) Norman - John (1989: 108), Thomson (1997: 218)
- Enchylium bachmanianum (Fink) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 179 as Collema bachmanianum)
- Enchylium limosum (Ach.) Otálora, P. M. Jørg. & Wedin - Bird (1966: 3 as Collema limosum)
- Enchylium polycarpon (Hoffm.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 191 as Collema polycarpon)
- Enchylium tenax (Sw.) Gray - Bird (1966: 3 as Collema tenax), Bird (1973: 392 as Collema tenax), Thomson (1984: 192 as Collema tenax)
- Endocarpon tortuosum Herre - Thomson (1984: 222)
- Ephebe lanata (L.) Vain. - Bird (1966: 3)
- Esslingeriana idahoensis (Essl.) Hale & M. J. Lai - Spribille (2002: 21)
- Evernia divaricata (L.) Ach. - Bird (1973: 398), Thomson (1984: 228 alpine variant)
- Evernia mesomorpha Nyl. - Bird (1973: 398), Douglas et al. (1981: 1458), Addison (1984: 299), Thomson (1984: 229)
- Farnoldia hypocrita (A. Massal.) Fröberg - Thomson (1997: 353 as Lecidea hypocrita)
- Farnoldia jurana (Schaer.) Hertel - Thomson (1997: 225)
- Farnoldia micropsis (A. Massal.) Hertel - Thomson (1997: 226)
- Flavocetraria nivalis (L.) Kärnefelt & A. Thell - Bird (1973: 397 as Cetraria nivalis), Achuff & La Roi (1977: 143 as Cetraria nivalis), Douglas et al. (1981: 1457 as Cetraria nivalis), Thomson (1984: 92 as Cetraria nivalis)
- Flavoplaca citrina (Hoffm.) Arup, Frödén & Søchting - Thomson (1997: 155 as Caloplaca citrina)
- Flavopunctelia flaventior (Stirt.) Hale - Bird (1973: 397 as Parmelia flaventior), Douglas et al. (1981: 1458 as Parmelia flaventior)
- Fulgidea oligospora (Timdal) Bendiksby & Timdal - Spribille (2002: 21 as Hypocenomyce oligospora)
- Fuscopannaria praetermissa (Nyl.) P. M. Jørg. - Bird (1966: 4), Thomson (1984: 320 as Parmelia praetermissa)
- Gowardia nigricans (Ach.) Nyl. - Thomson & Ahti (1994: 142 as Alectoria nigricans)
- Gyalidea asteriscus (Anzi) Aptroot & Lücking - Bird (1973: 393 as Solorinella asteriscus First record)
- Gyalolechia bracteata (Hoffm.) A. Massal. - Bird (1973: 400 as Fulgensia bracteata), Thomson (1997: 228 as Fulgensia bracteata)
- Gyalolechia flavovirescens (Wulf.) Søchting, Frödén & Arup - Thomson (1997: 161 as Caloplaca flavovirescens)
- Gyalolechia flavorubescens (Hudson) Søchting, Frödén & Arup - Bird (1973: 400 as Caloplaca aurantiaca)
- Gyalolechia fulgens (Sw.) Søchting, Frödén & Arup - Bird (1973: 400 as Fulgensia fulgens), Thomson (1997: 229 as Fulgensia fulgens)
- Henrica theleodes (Sommerf.) Savic, Tibell & Nav.-Ros. - Thomson (1997: 484 as Polyblastia theleodes)
- Heterodermia speciosa (Wulfen) Trevis. - Bird (1973: 399 as Anaptychia speciosa First record), Achuff & La Roi (1977: 143 as Anaptychia speciosa), Douglas et al. (1981: 1458 as Heterodermia tremulans)
- Hypocenomyce scalaris (Ach. ex Lilj.) M. Choisy - Bird (1973: 394 as Lecidea scalaris First record), Thomson (1997: 248), Douglas et al. (1981: 1458 as Lecidea scalaris)
- Hypogymnia austerodes (Nyl.) Räsänen - Bird (1973: 397), Douglas et al. (1981: 1458), Thomson (1984: 237 First record), John (1989: 108)
- Hypogymnia bitteri (Lynge) Ahti - Bird (1973: 397), Thomson (1984: 238)
- Hypogymnia occidentalis L. H. Pike - Spribille (2002: 21)
- Hypogymnia physodes (L.) Nyl. - Bird (1973: 397), Douglas et al. (1981: 1458), Addison (1984: 299), Thomson (1984: 241)
- Hypogymnia subobscura (Vain.) Poelt - Thomson (1984: 424)
- Hypogymnia tubulosa (Schaer.) Hav. - Bird (1973: 397), Achuff & La Roi (1977: 143)
- Icmadophila ericetorum (L.) Zahlbr. - Bird (1973: 396), Thomson (1997: 249), Douglas et al. (1981: 1458)
- Imshaugia aleurites (Ach.) S. L. F. Mey. - Bird (1973: 398 as Parmeliopsis aleurites), Douglas et al. (1981: 1459 as Parmeliopsis aleurites), Thomson (1984: 323 as Parmeliopsis aleurites)
- Kaernefeltia merrillii (Du Rietz) A. Thell & Goward - Bird (1973: 397 as Cetraria merrillii)
- Lasallia pensylvanica (Hoffm.) Llano - John (1989: 108)
- Lathagrium auriforme (With.) Otálora, P. M. Jørg. & Wedin - Bird (1973: 392 as Collema auriculatum First record)
- Lathagrium cristatum (L.) Otálora, P. M. Jørg. & Wedin - Bird (1966: 3 as Collema cristatum), Thomson (1984: 184 as Collema cristatum)
- Lathagrium fuscovirens (Ach.) Otálora, P. M. Jørg. & Wedin - Bird (1966: 3 as Collema tuniforme), Thomson (1984: 193 as Collema tuniforme)
- Lathagrium undulatum (Laur. ex Flot.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 194 as Collema undulatum)
- Lecanora allophana (Ach.) Nyl. - Bird (1973: 396), Thomson (1997: 264)
- Lecanora argopholis (Ach.) Ach. - Thomson (1997: 267)
- Lecanora cadubriae (A. Massal.) Hedl. - Bird (1973: 396), Thomson (1997: 270)
- Lecanora cenisia Ach. - John (1989: 108), Thomson (1997: 272)
- Lecanora chlarotera Nyl. - Bird (1973: 396 as Lecanora rugosella), Thomson (1997: 273), Thomson (1997: 301 as Lecanora rugosella)
- Lecanora circumborealis Brodo & Vitik. - Bird (1973: 396 as Lecanora coilocarpa), Thomson (1997: 274)
- Lecanora epibryon (Ach.) Ach. - Bird (1973: 396), Thomson (1997: 279), Douglas et al. (1981: 1458)
- Lecanora expallens Ach. - Thomson (1997: 280)
- Lecanora frustulosa (Dicks.) Ach. - John (1989: 108)
- Lecanora fuscescens (Sommerf.) Nyl. - Bird (1973: 393 as Lecidea fuscescens), Thomson (1997: 283)
- Lecanora hypoptoides (Nyl.) Nyl. - Douglas et al. (1981: 1458)
- Lecanora impudens Degel. - Bird (1973: 396), Thomson (1997: 287)
- Lecanora intricata (Ach.) Ach. - John (1989: 108), Thomson (1997: 288)
- Lecanora marginata (Schaer.) Hertel & Rambold- Thomson (1997: 291)
- Lecanora polytropa (Ehrh.) Rabenh. - John (1989: 108 as Lecanora polytropa), Thomson (1997: 299 as Lecanora polytropa), Douglas et al. (1981: 1458 as Lecanora polytropa)
- Lecanora pulicaris (Pers.) Ach. - Thomson (1997: 301), Douglas et al. (1981: 1458)
- Lecanora rupicola (L.) Zahlbr. - Bird (1973: 396), John (1989: 108), Thomson (1997: 303)
- Lecanora subintricata (Nyl.) Th. Fr. - Thomson (1997: 307)
- Lecanora subrugosa Nyl. - Thomson (1997: 308)
- Lecanora symmicta (Ach.) Ach. - Bird (1973: 394 as Lecidea symmicta), Thomson (1997: 309)
- Lecanora varia (Hoffm.) Ach. - Bird (1973: 396), Thomson (1997: 311)
- Lecidea atrobrunnea (DC.) Schaer. - Bird (1973: 393), John (1989: 108), Thomson (1997: 327)
- Lecidea auriculata Th. Fr. - John (1989: 108), Thomson (1997: 329)
- Lecidea confluens (Weber) Ach. - John (1989: 108), Thomson (1997: 339)
- Lecidea laboriosa Müll. Arg. - Thomson (1997: 358 as Lecidea leptoboloides)
- Lecidea lapicida (Ach.) Ach. var. lapicida - Bird (1973: 393 First record), John (1989: 108)
- Lecidea leucothallina Arnold - Thomson (1997: 360)
- Lecidea lithophila (Ach.) Ach. - John (1989: 108), Thomson (1997: 362)
- Lecidea paupercula Th. Fr. - John (1989: 108), Thomson (1997: 369)
- Lecidea plana (J. Lahm) Nyl. - John (1989: 108)
- Lecidea tessellata Flörke - John (1989: 108), Thomson (1997: 384 as Lecidea tessellata)
- Lecidea umbonata (Hepp.) Mudd - Thomson (1997: 389)
- Lecidella carpathica Körb. - John (1989: 108), Thomson (1997: 395)
- Lecidella elaeochroma (Ach.) M. Choisy - Thomson (1997: 396), Thomson (1997: 398 as Lecidella euphorea)
- Lecidella euphorea (Flörke) Hertel - Bird (1973: 393 as Lecidea glomerulosa), Douglas et al. (1981: 1458 as Lecidella glomerulosa)
- Lecidella patavina (A. Massal.) Knoph & Leuckert - Thomson (1997: 401 as Lecidella spitsbergensis)
- Lecidella stigmatea (Ach.) Hertel & Leuckert - Bird (1973: 394 as Lecidea stigmatea), John (1989: 108), Thomson (1997: 402)
- Lecidella wulfenii (Hepp) Körb. - Thomson (1997: 403)
- Lecidoma demissum (Rutstr.) Gotth. Schneid. & Hertel - Thomson (1997: 405)
- Lempholemma radiatum (Sommerf.) Henssen - Thomson (1997: 407)
- Lepraria membranacea (Dicks.) Vain. - Bird (1973: 401)
- Lepraria neglecta (Nyl.) Lettau - Bird (1973: 401 First record), John (1989: 108)
- Lepraria subalbicans (I.M. Lamb) Lendemer & B.P. Hodk. - Thomson (1984: 250 as Leprocaulon subalbicans), John (1989: 108 as Leprocaulon subalbicans)
- Leptogium furfuraceum (Harm.) Sierk. - Bird (1973: 392 First record)
- Leptogium hirsutum Sierk - Bird (1966: 3)
- Leptogium saturninum (Dicks.) Nyl. - Bird (1966: 3), Bird (1973: 392), Douglas et al. (1981: 1458), Thomson (1984: 262)
- Letharia columbiana (Nutt.) J. W. Thomson - Bird (1973: 398)
- Letharia vulpina (L.) Hue - Bird (1973: 398)
- Lobaria hallii (Tuck.) Zahlbr. - Thomson (1984: 266)
- Lobaria linita (Ach.) Rabenh. - Bird (1973: 393), Thomson (1984: 269)
- Lobaria pulmonaria (L.) Hoffm. - Achuff & La Roi (1977: 143), Douglas et al. (1981: 1458)
- Lobothallia alphoplaca (Wahlenb. in Ach.) Hafellner- Thomson (1997: 59 as Aspicilia alphoplaca)
- Lopadium pezizoideum (Ach.) Körb. - Thomson (1997: 411)
- Megaspora verrucosa (Ach.) Hafellner & V. Wirth - Thomson (1997: 443 as Pachyospora verrucosa)
- Melanelia hepatizon (Ach.) A. Thell - Bird (1973: 397 as Cetraria hepatizon), Thomson (1984: 82 as Cetraria hepatizon), John (1989: 108 as Cetraria hepatizon)
- Melanelia stygia (L.) Essl. - Thomson (1984: 315 as Parmelia stygia var. conturbata), John (1989: 108)
- Melanelixia albertana (Ahti) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Bird (1973: 397 as Parmelia albertana), Douglas et al. (1981: 1458 as Parmelia albertana)
- Melanelixia subaurifera (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Bird (1973: 397 as Parmelia subaurifera First record), Douglas et al. (1981: 1459 as Parmelia subaurifera), Thomson (1984: 316 as Parmelia subaurifera)
- Melanohalea elegantula (Zahlbr.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Thomson (1984: 300 as Parmelia elegantula)
- Melanohalea exasperatula (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Bird (1973: 397 as Parmelia exasperatula), Achuff & La Roi (1977: 143 as Parmelia exasperatula), Thomson (1984: 300 as Parmelia exasperatula)
- Melanohalea infumata (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Bird (1973: 397 as Parmelia infumata), Thomson (1984: 304 as Parmelia infumata)
- Melanohalea olivacea (L.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Thomson (1984: 306 as Parmelia olivacea)
- Melanohalea olivaceoides (Krog) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Thomson (1984: 307 as Parmelia olivaceoides)
- Melanohalea septentrionalis (Lynge) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Bird (1973: 397 as Parmelia septentrionalis), Achuff & La Roi (1977: 143 as Parmelia septentrionalis), Douglas et al. (1981: 1458 as Parmelia septentrionalis), Thomson (1984: 311 as Parmelia septentrionalis)
- Melanohalea subolivacea (Nyl. ex Hasse) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Bird (1973: 398 as Parmelia subolivacea)
- Melanohalea trabeculata (Ahti) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Douglas et al. (1981: 1458 as Parmelia trabeculata)
- Micarea melaena (Nyl.) Hedl. - Bird (1973: 401 First record), Thomson (1997: 419)
- Montanelia disjuncta (Erichsen) Divakar, A. Crespo, Wedin & Essl. - Thomson (1984: 299 as Parmelia disjuncta), John (1989: 108 as Melanelia granulosa)
- Montanelia panniformis (Nyl.) Divakar, A. Crespo, Wedin & Essl. - John (1989: 108 as Melanelia panniformis)
- Montanelia sorediata (Ach.) Divakar, A. Crespo, Wedin & Essl. - Thomson (1984: 312 as Parmelia sorediosa), John (1989: 108 as Melanelia sorediata)
- Montanelia tominii (Oxner) Divakar, A. Crespo, Wedin & Essl. - Thomson (1984: 317 as Parmelia substygia)
- Mycobilimbia berengeriana (A. Massal.) Hafellner & V. Wirth - Thomson (1997: 331 as Lecidea berengeriana)
- Mycobilimbia pilularis (Hepp ex Körb.) Hafellner & Türk - Bird (1973: 393 as Bacidia sphaeroides), Thomson (1997: 110 as Bacidia sphaeroides), Douglas et al. (1981: 1457 as Bacidia sphaeroides)
- Mycobilimbia tetramera (De Not.) Vitik., Ahti, Kuusinen, Lommi & T. Ulvinen ex Hafellner & Türk - Bird (1973: 393 as Bacidia obscurata First record), Thomson (1997: 422 as Mycobilimbia obscurata), Douglas et al. (1981: 1457 as Bacidia obscurata)
- Mycoblastus affinis (Schaer.) T. Schauer - Bird (1973: 394 First record)
- Mycoblastus sanguinarius (L.) Norman - Thomson (1997: 426)
- Myriolecis hagenii (Ach.) Ach. - Bird (1973: 396 as Lecanora hagenii), Thomson (1997: 286 as Lecanora hagenii)
- Myriolecis zosterae (Ach.) Sliwa, Zhao Xin & Lumbsch - Thomson (1997: 312 as Lecanora zosterae)
- Myriospora smaragdula (Wahlenb.) K. Knudsen & B. Abbott - Thomson & Ahti (1994: 142 as Acarospora smaragdula)
- Nephroma arcticum (L.) Torss. - Bird (1966: 4), Bird (1973: 393), Thomson (1984: 277)
- Nephroma expallidum (Nyl.) Nyl. - Bird (1966: 4), Bird (1973: 393), Thomson (1984: 279)
- Nephroma parile (Ach.) Ach. - Bird (1966: 4), Thomson (1984: 282)
- Nephroma resupinatum (L.) Ach. - Bird (1966: 4), Achuff & La Roi (1977: 143)
- Nephromopsis cucullata (Bellardi) Divakar, A. Crespo & Lumbsch - Bird (1973: 397 as Cetraria cucullata), Thomson (1984: 76 as Cetraria cucullata)
- Ochrolechia androgyna (Hoffm.) Arnold - Bird (1973: 396), John (1989: 108), Thomson (1997: 430)
- Ochrolechia arborea (Kreyer) Almb. - Douglas et al. (1981: 1458 mit den Autoren (Ljubitz.) Almb.)
- Ochrolechia bryophaga (Erichsen) K. Schmitz & Lumbsch - Thomson (1997: 450 as Pertusaria bryophaga)
- Ochrolechia inaequatula (Nyl.) Zahlbr. - Thomson (1997: 434)
- Ochrolechia upsaliensis (L.) A. Massal. - Thomson (1997: 436)
- Ophioparma lapponica (Räsänen) Hafellner & R.W. Rogers - John (1989: 108 as Haematomma lapponicum), Thomson (1997: 440)
- Orphniospora moriopsis (A. Massal.) D. Hawksw. - John (1989: 108)
- Pannaria conoplea (Ach.) Bory - Bird (1966: 4 as Pannaria pityrea), Douglas et al. (1981: 1458 as Pannaria pityrea), Thomson (1984: 292)
- Parmelia hygrophila Goward & Ahti - Spribille (2002: 21)
- Parmelia omphalodes (L.) Ach. - Thomson (1984: 308), John (1989: 108)
- Parmelia saxatilis (L.) Ach. - Thomson (1984: 310), John (1989: 108)
- Parmelia sulcata Taylor - Bird (1973: 398), Douglas et al. (1981: 1459), Addison (1984: 299), Thomson (1984: 318)
- Parmeliopsis ambigua (Wulfen) Nyl. - Bird (1973: 398), Douglas et al. (1981: 1459), Thomson (1984: 325)
- Parmeliopsis hyperopta (Ach.) Vain. - Bird (1973: 398), Douglas et al. (1981: 1459), Thomson (1984: 326)
- Parvoplaca tiroliensis (Zahlbr.) Arup, Søchting & Frödén - Thomson (1997: 173 as Caloplaca tiroliensis)
- Peltigera aphthosa (L.) Willd. - Bird (1966: 4), Bird (1973: 392), Douglas et al. (1981: 1459), Thomson (1984: 329)
- Peltigera canina (L.) Willd. - Bird (1966: 5), Bird (1973: 392), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1459), Thomson (1984: 332)
- Peltigera collina (Ach.) Schrad. - Bird (1966: 5 as Peltigera scutata), Thomson (1984: 335)
- Peltigera didactyla (With.) J. R. Laundon - Bird (1966: 5 as Peltigera canina var. spuria), Bird (1973: 392 as Peltigera spuria), Douglas et al. (1981: 1459 as Peltigera spuria)
- Peltigera horizontalis (Huds.) Baumg. - Bird (1973: 392), Thomson (1984: 337)
- Peltigera leucophlebia (Nyl.) Gyeln. - Bird (1966: 4 as Peltigera aphthosa var. variolosa), Bird (1973: 392), Thomson (1984: 330 as Peltigera aphthosa var. leucophlebia)
- Peltigera malacea (Ach.) Funck - Bird (1966: 5), Bird (1973: 392), Douglas et al. (1981: 1459), Thomson (1984: 338)
- Peltigera membranacea (Ach.) Nyl. - Thomson (1984: 341)
- Peltigera polydactylon (Neck.) Hoffm. - Bird (1966: 5), Bird (1973: 392), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1459), Thomson (1984: 343)
- Peltigera praetextata (Flörke ex Sommerf.) Vain. - Bird (1973: 392 First record)
- Peltigera rufescens (Weiss) Humb. - Bird (1966: 5 as Peltigera canina var. rufescens), Bird (1973: 392), Douglas et al. (1981: 1459), Thomson (1984: 333 as Peltigera canina var. rufescens)
- Peltigera scabrosa Th. Fr. - Douglas et al. (1981: 1459), Thomson (1984: 344)
- Peltigera venosa (L.) Hoffm. - Bird (1966: 5), Bird (1973: 392), Thomson (1984: 345)
- Pertusaria dactylina (Ach.) Nyl. - Thomson (1997: 453)
- Pertusaria geminipara (Th. Fr.) C. Knight ex Brodo - Bird (1973: 396 as Ochrolechia geminipara), Thomson (1997: 455)
- Pertusaria panyrga (Ach.) A. Massal. - Thomson (1997: 459)
- Phaeophyscia constipata (Norrl. & Nyl.) Moberg - Bird (1973: 400 as Physcia constipata), Douglas et al. (1981: 1459 as Physcia constipata), Thomson (1984: 347)
- Phaeophyscia endococcina (Körb.) Moberg - Thomson (1984: 348), John (1989: 108)
- Phaeophyscia hispidula (Ach.) Essl. - Douglas et al. (1981: 1459 as Physcia setosa),
- Phaeophyscia orbicularis (Neck.) Poetsch - Bird (1973: 400 as Physcia orbicularis), Douglas et al. (1981: 1459 as Physcia orbicularis)
- Phaeophyscia sciastra (Ach.) Moberg - Thomson (1984: 349)
- Phaeorrhiza nimbosa (Fr.) H. Mayrhofer & Poelt - Thomson (1997: 467)
- Phaeorrhiza sareptana (Tomin) H. Mayrhofer & Poelt - Thomson (1997: 468)
- Phylliscum demangeonii (Moug. & Mont.) Nyl. - John (1989: 108)
- Physcia adscendens (Fr.) Oliv. - Bird (1973: 400), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1459), Thomson (1984: 352)
- Physcia aipolia (Ehrh. ex Humb.) Fürnr. - Bird (1973: 400), Douglas et al. (1981: 1459), Thomson (1984: 353)
- Physcia caesia (Hoffm.) Hampe ex Fürnr. - Thomson (1984: 354), John (1989: 108)
- Physcia ciliata (Hoffm.) Moberg - Bird (1973: 400), Douglas et al. (1981: 1459)
- Physcia dubia (Hoffm.) Lettau - Thomson (1984: 355)
- Physcia millegrana Degel. - Bird (1973: 400 First record), Douglas et al. (1981: 1459)
- Physcia phaea (Tuck.) J. W. Thomson - Thomson (1984: 356), John (1989: 108)
- Physcia sciastra (Ach.) Moberg - John (1989: 108)
- Physcia stellaris (L.) Nyl. - Bird (1973: 400)
- Physconia detersa (Nyl.) Poelt - Douglas et al. (1981: 1459), Thomson (1984: 359)
- Physconia muscigena (Ach.) Poelt - Bird (1973: 400 as Physcia muscigena), Thomson (1984: 360), John (1989: 108)
- Placidium squamulosum (Ach.) Breuss - Bird (1973: 401 as Dermatocarpon hepaticum)
- Placynthium asperellum (Ach.) Trevis. - Thomson (1984: 365 as Placynthium aspratile)
- Placynthium nigrum (Huds.) Gray - Thomson (1984: 366)
- Platismatia glauca (L.) C. F. Culb. & W. L. Culb. - Bird (1973: 398), Thomson (1984: 368)
- Pleopsidium chlorophanum (Wahlenb.) Zopf - Thomson (1997: 22 as Acarospora chlorophana)
- Polyblastia cupularis A. Massal. - Thomson (1997: 478)
- Polycauliona candelaria (L.) Frödén, Arup, & Søchting - Thomson (1984: 483 as Xanthoria candelaria), John (1989: 109 as Xanthoria candelaria)
- Polycauliona polycarpa (Hoffm.) Frödén, Arup, & Søchting - Bird (1973: 400 as Xanthoria polycarpa), Douglas et al. (1981: 1459 as Xanthoria polycarpa), Thomson (1984: 487 as Xanthoria polycarpa)
- Polychidium muscicola (Sw.) Gray - Thomson (1984: 370), John (1989: 108)
- Porpidia crustulata (Ach.) Hertel & Knoph - John (1989: 108)
- Porpidia flavocaerulescens (Hornem.) Hertel & A. J. Schwab - John (1989: 108), Thomson (1997: 491 as Porpidia flavicunda)
- Porpidia macrocarpa (DC.) Hertel & A. J. Schwab - Bird (1973: 394 as Lecidea macrocarpa)
- Porpidia thomsonii Gowan - John (1989: 108), Thomson (1997: 498)
- Protoblastenia rupestris (Scop.) Steiner - Bird (1973: 400 First record), Thomson (1997: 503)
- Protopannaria pezizoides (Web.) Trev. - Bird (1966: 4 as Pannaria pezizoides), Bird (1973: 392 as Pannaria pezizoides), Thomson (1984: 294 as Pannaria pezizoides)
- Protoparmelia badia (Hoffm.) Hafellner - Bird (1973: 396 as Lecanora badia First record), John (1989: 108), Thomson (1997: 269 as Lecanora badia)
- Protoparmeliopsis muralis (Schreb.) M. Choisy - Thomson (1997: 295 as Lecanora muralis)
- Pseudephebe minuscula (Nyl. ex Arnold) Brodo & D. Hawksw. - Bird (1973: 398 as Alectoria minuscula), Thomson (1984: 373), John (1989: 108)
- Pseudephebe pubescens (L.) M. Choisy - Bird (1973: 398 as Alectoria pubescens), Thomson (1984: 374), John (1989: 108)
- Psora decipiens (Hedwig) Hoffm. - Bird (1973: 393 as Lecidea decipiens), Thomson (1997: 507)
- Psora globifera (Ach.) A. Massal. - Thomson (1997: 508)
- Psora himalayana (Bab.) Timdal - Thomson (1997: 507)
- Psora nipponica (Zahlbr.) Gotth. Schneider - Douglas et al. (1981: 1458 as Lecidea rubiformis), Thomson (1997: 510)
- Psora rubiformis (Wahlenb. ex Ach.) Hook. - Bird (1973: 394 as Lecidea rubiformis)
- Psoroma hypnorum (Vahl) Gray - Bird (1966: 4), Bird (1973: 392), Thomson (1984: 376)
- Psorula rufonigra (Tuck.) Gotth. Schneider - Thomson (1997: 515)
- Ramboldia cinnabarina (Sommerf.) Kalb, Lumbsch & Elix - Thomson (1997: 336 as Lecidea cinnabarina)
- Ramalina dilacerata (Hoffm.) Hoffm. - Bird (1973: 399 as Ramalina minuscula), Achuff & La Roi (1977: 143 as Ramalina minuscula), Douglas et al. (1981: 1459)
- Ramalina farinacea (L.) Ach. - Douglas et al. (1981: 1459)
- Ramalina fastigiata (Pers.) Ach. - Bird (1973: 399), Douglas et al. (1981: 1459), Addison (1984: 299),
- Ramalina intermedia (Del. ex Nyl.) Nyl. - Thomson (1984: 379)
- Ramalina obtusata (Arnold) Bitt. - Thomson (1984: 380)
- Ramalina pollinaria (Westr.) Ach. - Douglas et al. (1981: 1459), Addison (1984: 299), Thomson (1984: 381)
- Ramalina roesleri (Hochst. ex Schaer.) Hue - Bird (1973: 399 First record), Thomson (1984: 233 as Fistulariella roesleri)
- Ramalina thrausta (Ach.) Nyl. - Bird (1973: 399 First record), Douglas et al. (1981: 1459), Thomson (1984: 382)
- Rhizocarpon alpicola (Anzi) Rabenh. - John (1989: 108)
- Rhizocarpon badioatrum (Flörke ex Spreng.) Th. Fr. - John (1989: 108), Thomson (1997: 524)
- Rhizocarpon bolanderi (Tuck.) Herre - John (1989: 108), Thomson (1997: 526)
- Rhizocarpon chioneum (Norman) - Thomson (1997: 527)
- Rhizocarpon disporum (Nägeli ex Hepp) Müll. Arg. - Douglas et al. (1981: 1459), John (1989: 108)
- Rhizocarpon eupetraeoides (Nyl.) Blomb. & Forss. - John (1989: 108)
- Rhizocarpon eupetraeum (Nyl.) Arnold - John (1989: 108)
- Rhizocarpon geminatum Körb. - John (1989: 108), Thomson (1997: 537)
- Rhizocarpon geographicum (L.) DC. - Bird (1973: 394), John (1989: 108), Thomson (1997: 538)
- Rhizocarpon grande (Flörke ex Flot.) Arnold - Bird (1973: 394 First record), John (1989: 108), Thomson (1997: 539)
- Rhizocarpon intermediellum Räsänen - Thomson (1997: 542)
- Rhizocarpon macrosporum Räsänen - John (1989: 108), Thomson (1997: 543)
- Rhizocarpon polycarpum (Hepp) Th. Fr. - John (1989: 108), Thomson (1997: 546)
- Rhizocarpon pusillum Runem. - Thomson (1997: 547)
- Rhizocarpon riparium Räsänen - John (1989: 108), Thomson (1997: 548)
- Rhizocarpon superficiale (Schaer.) Vain. - John (1989: 108), Thomson (1997: 551)
- Rhizoplaca chrysoleuca (Sm.) Zopf - Thomson (1997: 554), Douglas et al. (1981: 1458), John (1989: 108)
- Rhizoplaca melanophthalma (Ram.) Leuckert & Poelt - John (1989: 108), Thomson (1997: 555)
- Rinodina albertana Sheard - Sheard (2010: 36 Protologue) Type in Edmonton, Alberta, Canada PMAE
- Rinodina archaea (Ach.) Vain. - Bird (1973: 399), Thomson (1997: 560), Douglas et al. (1981: 1459)
- Rinodina aurantiaca Sheard - Sheard & Mayrhofer (2002: 653)
- Rinodina bischoffii (Hepp) A. Massal. - Bird (1973: 399)
- Rinodina boulderensis Sheard - Sheard & Mayrhofer (2002: 656)
- Rinodina calcigena (Th. Fr.) Lynge - Thomson (1997: 562)
- Rinodina exigua (Ach.) Gray - Douglas et al. (1981: 1459)
- Rinodina mniaraea (Ach.) Körb. - Bird (1973: 399), Thomson (1997: 567)
- Rinodina pyrina (Ach.) Ach. - Bird (1973: 399)
- Rinodina terrestris Tomin - Thomson (1997: 568 as Rinodina mucronatula)
- Rinodina turfacea (Wahlenb.) Körb. - Bird (1973: 399), John (1989: 108), Thomson (1997: 571)
- Romjularia lurida (Ach.) Timdal - Thomson (1997: 509 as Psora lurida)
- Rostania ceranisca (Nyl.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 182 as Collema ceraniscum)
- Rusavskia elegans (Link) S. Y. Kondr. & Kärnefelt - Bird (1973: 400 as Xanthoria elegans), Douglas et al. (1981: 1459 as Xanthoria elegans), Thomson (1984: 484 as Xanthoria elegans), John (1989: 109 as Xanthoria elegans)
- Rusavskia sorediata (Vain.) S. Y. Kondr. & Kärnefelt - Thomson (1984: 487 as Xanthoria sorediata)
- Sarcogyne regularis Körb. - Bird (1973: 396 First record), Thomson (1997: 579)
- Schaereria cinereorufa (Schaer.) Th. Fr. - John (1989: 109)
- Schaereria fuscocinerea (Nyl.) Clauzade & Cl. Roux - John (1989: 109 as Schaereria tenebrosa)
- Scytinium callopismum (A. Massal.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 180 as Collema callopismum)
- Scytinium lichenoides (L.) Otálora, P. M. Jørg. & Wedin - Bird (1966: 3 as Leptogium lichenoides), Bird (1973: 392 as Leptogium lichenoides), Thomson (1984: 257 as Leptogium lichenoides)
- Scytinium gelatinosum (With.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 263 as Leptogium sinuatum)
- Scytinium tenuissimum (Dicks.) Otálora, P. M. Jørg. & Wedin - Bird (1966: 3 as Leptogium tenuissimum), Thomson (1984: 264 as Leptogium tenuissimum)
- Scytinium teretiusculum (Wallr.) Otálora, P. M. Jørg. & Wedin - Bird (1966: 3 as Leptogium teretiusculum)
- Solorina bispora Nyl. - Thomson (1984: 386)
- Solorina crocea (L.) Ach. - Bird (1973: 393), Thomson (1984: 387)
- Solorina octospora (Arnold) Arnold - Thomson (1984: 389)
- Solorina saccata (L.) Ach. - Bird (1973: 393), Douglas et al. (1981: 1459), Thomson (1984: 390)
- Solorina spongiosa (Ach.) Anzi - Thomson (1984: 391)
- Spilonema revertens Nyl. - John (1989: 109)
- Sporastatia polyspora (Nyl.) Grummann - John (1989: 109)
- Sporastatia testudinea (Ach.) A. Massal. - John (1989: 109), Thomson (1997: 589)
- Staurothele areolata (Ach.) Lettau - Thomson (1997: 592)
- Staurothele drummondii (Tuck.) Tuck. - John (1989: 109 as Staurothele clopima), Thomson (1997: 595)
- Staurothele fissa (Tayler) Zwackh - Thomson (1997: 596)
- Stereocaulon alpinum Laurer - Bird (1973: 394), Douglas et al. (1981: 1459), Thomson (1984: 400)
- Stereocaulon botryosum Ach. em. Frey - Thomson (1984: 405)
- Stereocaulon paschale (L.) Hoffm. - Douglas et al. (1981: 1459), Thomson (1984: 418)
- Stereocaulon rivulorum H. Magn. - Thomson (1984: 421)
- Stereocaulon saxatile H. Magn. - Thomson (1984: 423)
- Stereocaulon tomentosum Fr. - Bird (1973: 394), Achuff & La Roi (1977: 143), Thomson (1984: 428)
- Tephromela atra (Huds.) Hafellner - Thomson (1997: 633)
- Tetramelas geophilus (Flörke ex Sommerf.) Norman - Thomson (1997: 133 as Buellia geophila)
- Tetramelas papillatus (Sommerf.) Kalb - John (1989: 108 as Buellia papillata), Thomson (1997: 136 as Buellia papillata)
- Tetramelas triphragmioides (Anzi) A. Nordin & Tibell - Bird (1973: 399 as Buellia triphragmioides), Douglas et al. (1981: 1457 as Buellia triphragmioides)
- Thamnolia subuliformis (Ehrh.) W. L. Culb. - Thomson (1984: 438)
- Thrombium epigaeum (Pers.) Wallr. - Bird (1973: 401 First record), Thomson (1997: 610)
- Toninia candida (Weber) Th. Fr. - Bird (1973: 394 First record), Thomson (1997: 614)
- Toninia populorum (A. Massal.) Kistenich, Timdal, Bendiksby & S. Ekman - Bird (1973: 393 as Bacidia populorum First record)
- Toninia ruginosa (Tuck.) Herre subsp. ruginosa - Bird (1973: 394)
- Toninia sedifolia (Scop.) Timdal - Bird (1973: 394 as Toninia caeruleonigricans), Thomson (1997: 614 as Toninia coeruleonigricans auct.)
- Toninia tristis (Th. Fr.) Th. Fr. subsp. tristis - Thomson (1997: 620)
- Trapeliopsis granulosa (Hoffm.) Lumbsch - Bird (1973: 393 as Lecidea granulosa), Douglas et al. (1981: 1458 as Lecidea granulosa), Thomson (1997: 624)
- Tremolecia atrata (Ach.) Hertel - Bird (1973: 393 as Lecidea dicksonii First record), Thomson (1997: 627)
- Tuckermannopsis americana (Spreng.) Hale - Bird (1973: 397 as Cetraria halei), Douglas et al. (1981: 1457 as Cetraria halei), Addison (1984: 299 as Cetraria halei), Thomson (1984: 81 as Cetraria halei)
- Tuckermannopsis chlorophylla (Willd.) Hale - Bird (1973: 397 as Cetraria chlorophylla), Douglas et al. (1981: 1457 as Cetraria chlorophylla), Thomson (1984: 73 as Cetraria chlorophylla)
- Tuckermannopsis orbata (Nyl.) M. J. Lai - Spribille (2002: 21)
- Tuckermannopsis platyphylla (Tuck.) Gyeln. - Bird (1973: 397 as Cetraria platyphylla)
- Tuckermannopsis sepincola (Ehrh.) Hale - Thomson (1984: 94 as Cetraria sepincola)
- Umbilicaria americana Poelt & T. H. Nash - Poelt & Nash (1993: 425)
- Umbilicaria angulata Tuck. - Thomson (1984: 442)
- Umbilicaria cylindrica (L.) Delise ex Duby - Bird (1973: 395), John (1989: 109)
- Umbilicaria decussata (Vill.) Zahlbr. - Thomson (1984: 288 as Omphalodiscus decussatus)
- Umbilicaria deusta (L.) Baumg. - Thomson (1984: 449), John (1989: 109)
- Umbilicaria hirsuta (Sw. ex Westr.) Ach. - Thomson (1984: 452)
- Umbilicaria hyperborea (Ach.) Hoffm. - Bird (1973: 395), Thomson (1984: 452), John (1989: 109)
- Umbilicaria lambii Imshaug - John (1989: 109)
- Umbilicaria polaris (Schol.) Zahlbr. - Thomson (1984: 289 erroneously as Omphalodiscus krascheninnikovii)
- Umbilicaria mammulata (Ach.) Tuck. - Thomson (1984: 454)
- Umbilicaria muehlenbergii (Ach.) Tuck. - Douglas et al. (1981: 1457 as Actinogyra muehlenbergii), Thomson (1984: 26 as Actinogyra muehlenbergii), Thomson & Ahti (1994: 142 as Actinogyra muehlenbergii)
- Umbilicaria phaea Tuck. - Thomson (1984: 455), John (1989: 109)
- Umbilicaria polyphylla (L.) Baumg. - Thomson (1984: 457), John (1989: 109)
- Umbilicaria proboscidea (L.) Schrad. - Thomson (1984: 458), John (1989: 109)
- Umbilicaria rigida (Du Rietz) Frey - Thomson (1984: 31 as Agyrophora rigida), John (1989: 109)
- Umbilicaria torrefacta (Lightf.) Schrad. - Thomson (1984: 459), John (1989: 109)
- Umbilicaria vellea (L.) Ach. - Thomson (1984: 460), John (1989: 109), Poelt & Nash (1993: 425)
- Umbilicaria virginis Schaer. - Thomson (1984: 290 as Omphalodiscus virginis)
- Usnea alpina Motyka - Douglas et al. (1981: 1459)
- Usnea cavernosa Tuck. - Bird (1973: 398), Achuff & La Roi (1977: 143), Douglas et al. (1981: 1459), Thomson (1984: 462)
- Usnea ceratina Ach. - Bird (1973: 398)
- Usnea dasopoga (Ach.) Nyl. - Bird (1973: 398), Achuff & La Roi (1977: 143), Thomson (1984: 465)
- Usnea glabrata (Ach.) Vain. - Bird (1973: 398 First record), Douglas et al. (1981: 1459), Addison (1984: 299 as Usnea sorediifera)
- Usnea glabrescens (Nyl. ex Vain.) Vain. - Bird (1973: 398 as Usnea compacta), Achuff & La Roi (1977: 143)
- Usnea hirta (L.) Weber ex F. H. Wigg. - Bird (1973: 398), Thomson (1984: 467)
- Usnea scabrata Nyl. - Bird (1973: 399 as Usnea scabrata subsp. nylanderiana), Achuff & La Roi (1977: 143 as Usnea scabiosa), Thomson (1984: 468 as Usnea scabrata subsp. nylanderiana)
- Usnea subfloridana Stirt. - Bird (1973: 399), Douglas et al. (1981: 1459), Addison (1984: 299), Thomson (1984: 469)
- Usnea substerilis Motyka - Bird (1973: 399), Douglas et al. (1981: 1459 erroneously as Usnea sorediifera), Thomson (1984: 470)
- Varicellaria rhodocarpa (Körb.) Th. Fr. - Bird (1973: 395 as Varicellaria kemensis First record), Thomson (1997: 629)
- Verrucaria muralis Ach. - John (1989: 109), Thomson (1997: 641)
- Verrucaria nigrescens Pers. - Thomson (1997: 642)
- Vulpicida pinastri (Scop.) J.-E. Mattsson & M. J. Lai - Bird (1973: 397 as Cetraria pinastri), Douglas et al. (1981: 1457 as Cetraria pinastri), Addison (1984: 299 as Cetraria pinastri), Thomson (1984: 93 as Cetraria pinastri), John (1989: 109 as Tuckermannopsis pinastri)
- Vulpicida tilesii (Ach.) J.-E. Mattsson & M. J. Lai - Thomson (1984: 95 as Cetraria tilesii), Glew (1994: 83)
- Xanthomendoza fallax (Hepp) Søchting, Kärnefelt & S. Kondr. - Bird (1973: 400 as Xanthoria fallax), Thomson (1984: 486 as Xanthoria fallax)
- Xanthomendoza trachyphylla (Tuck.) Frödén, Arup & Søchting - Thomson (1997: 177 as Caloplaca trachyphylla)
- Xanthoparmelia chlorochroa (Tuck.) Hale - Thomson (1984: 477)
- Xanthoparmelia coloradoensis (Gyeln.) Hale - Douglas et al. (1981: 1458 erroneously as Parmelia taractica), Thomson (1984: 480 erroneously as Xanthoparmelia taractica)
- Xanthoparmelia stenophylla (Ach.) Ahti & D. Hawksw. - John (1989: 109 as Xanthoparmelia somloensis)
- Xylographa parallela (Ach.: Fr.) Behlen & Desberger - Bird (1973: 400 as Xylographa abietina First record), Thomson (1997: 646 as Xylographa abietina)
- Xylographa vitiligo (Ach.) J. R. Laundon - Thomson (1997: 647)
- Xylopsora friesii (Ach. ex Lilj.) Bendiksby & Timdal - Bird (1973: 393 as Lecidea friesii First record), Thomson (1997: 247 as Hypocenomyce friesii)
- Zahlbrucknerella calcarea (Herre) Herre - Thomson (1984: 489)