Checklist of lichens of Ontario (Canada)
Version 31 December 2018
- Acarospora americana H. Magn. - Crowe (1994: 64), Brodo et al. (2013: 205)
- Acarospora badiofusca (Nyl.) Th. Fr. - Crowe (1994: 64), Thomson (1997: 21)
- Acarospora fuscata (Nyl.) Arnold - Crowe (1994: 64), Thomson (1997: 24), Brodo et al. (2013: 205)
- Acarospora glaucocarpa (Wahlenb.) Körb. - Crowe (1994: 64), Thomson (1997: 25), Brodo et al. (2013: 205)
- Acarospora macrospora (Hepp) A. Massal. ex Bagl. - Brodo et al. (2013: 205)
- Acarospora moenium (Vain.) Räsänen - Brodo et al. (2013: 205 New record for Canada)
- Acrocordia cavata (Ach.) R. C. Harris - Brodo et al. (2013: 206)
- Acrocordia conoidea (Fr.) Körb. - Brodo et al. (2013: 206)
- Ahtiana aurescens (Tuck.) A. Thell & Randlane - Crowe (1994: 74 as Tuckermannopsis aurescens)
- Alectoria nigricans (Ach.) Nyl. - Thomson (1984: 35)
- Alectoria ochroleuca (Hoffm.) A. Massal. - Thomson (1984: 37)
- Alyxoria varia (Pers.) Ertz & Tehler - Crowe (1994: 70 as Opegrapha varia), Brodo et al. (2013: 207)
- Amandinea dakotensis (H. Magn.) P. F. May & Sheard - Crowe (1994: 73 as Rinodina dakotensis)
- Amandinea polyspora (Willey) E. Lay & P.F. May - Thomson (1997: 137 as Buellia polyspora)
- Amandinea punctata (Hoffm.) Coppins & Scheid. - Crowe (1994: 65 as Buellia punctata), Crowe (1994: 65 as Buellia stigmatea), Thomson (1997: 138 as Buellia punctata), Brodo et al. (2013: 206)
- Amygdalaria panaeola (Ach.) Hertel & Brodo - Crowe (1994: 64), Thomson (1997: 42)
- Anaptychia crinalis (Schaer.) Vezda - Thomson (1984: 40 erroneously as Anaptychia kaspica), Crowe (1994: 64 erroneously as Anaptychia setifera), Brodo et al. (2013: 206)
- Anisomeridium biforme (Borrer in Hook. & Sow.) R. C. Harris in Vezda - Crowe (1994: 64)
- Anisomeridium polypori (Ellis & Everh.) M. E. Barr - Brodo et al. (2013: 206)
- Arctoparmelia centrifuga (L.) Hale - Ahti (1964: 20 as Parmelia centrifuga), Crowe (1994: 64), Thomson (1984: 476 as Xanthoparmelia centrifuga)
- Arctoparmelia incurva (Pers.) Hale - Thomson (1984: 478)
- Arthonia didyma Körb. - Brodo et al. (2013: 206)
- Arthonia diffusella Fink in Hedr. - Crowe (1994: 64)
- Arthonia dispersa (Schrad.) Nyl. - Crowe (1994: 64)
- Arthonia fuliginosa (Schaer.) Flot. - Crowe (1994: 64), Brodo et al. (2013: 206)
- Arthonia patellulata Nyl. - Crowe (1994: 64), Thomson (1997: 47), Brodo et al. (2013: 206)
- Arthonia radiata (Pers.) Ach. - Brodo et al. (2013: 206)
- Arthonia spadicea Leight. - Crowe (1994: 64)
- Aspicilia cinerea (L.) Körb. - Crowe (1994: 64), Thomson (1997: 68), Brodo et al. (2013: 207)
- Aspicilia subradians (Nyl.) Hue - Thomson (1997: 94)
- Aspicilia supertegens Arnold - Crowe (1994: 64)
- Aspicilia verrucigera Hue - Crowe (1994: 64)
- Aspilidea myrinii (Fr. in Myrin) Hafellner- Thomson (1997: 85 as Aspicilia myrinii)
- Athallia holocarpa (Hoffm.) Arup, Frödén & Søchting - Crowe (1994: 65 as Caloplaca holocarpa), Thomson (1997: 164 as Caloplaca holocarpa), Brodo et al. (2013: 209 as Caloplaca holocarpa)
- Bacidia bagliettoana (A. Massal. & de Not. in A. Massal.) Jatta - Thomson (1997: 99), Brodo et al. (2013: 207)
- Bacidia coprodes (Körb.) Lettau - Brodo et al. (2013: 207)
- Bacidia igniarii (Nyl.) Oxner - Thomson (1997: 103)
- Bacidia laurocerasi (Del. ex Duby) Zahlbr. subsp. laurocerasi - Crowe (1994: 64), Brodo et al. (2013: 207)
- Bacidia polychroa (Th. Fr.) Körb. - Crowe (1994: 64)
- Bacidia populorum (A. Massal.) Trevisan - Thomson (1997: 107)
- Bacidia rosellizans S. Ekman - Crowe (1994: 64 erroneously as Bacidia rosella)
- Bacidia rubella (Hoffm.) A. Massal. - Crowe (1994: 64), Thomson (1997: 107), Brodo et al. (2013: 207)
- Bacidia schweinitzii (Fr. ex E. Michener) A. Schneider - Crowe (1994: 65), Brodo et al. (2013: 207)
- Bacidia subincompta (Nyl.) Arnold - Thomson (1997: 110)
- Bacidina egenula (Nyl.) Vezda - Brodo et al. (2013: 207)
- Baeomyces carneus (Retz.) Flörke - Crowe (1994: 65), Thomson (1984: 48)
- Baeomyces rufus (Huds.) Rebent. - Ahti (1964: 13), Crowe (1994: 65), Thomson (1984: 52)
- Bagliettoa baldensis (A. Massal.) Vezda - Brodo et al. (2013: 207)
- Bagliettoa calciseda (DC.) Gueidan & Cl. Roux - Brodo et al. (2013: 208)
- Biatora chrysantha (Zahlbr.) Printzen in V. Wirth - Brodo et al. (2013: 208)
- Biatora efflorescens (Hedl.) Räsänen - Crowe (1994: 69 erroneously as Lecidea epixanthoidiza), Brodo et al. (2013: 208)
- Biatora helvola (Körb. ex Hellbom) Hedl. - Crowe (1994: 65), Thomson (1997: 349 as Lecidea helvola)
- Biatora ocelliformis (Nyl.) Arnold - Brodo et al. (2013: 208)
- Biatora pycnidiata Printzen & Tønsberg - Brodo et al. (2013: 208)
- Biatora vernalis (L.) Fr. - Crowe (1994: 65), Thomson (1997: 389 as Lecidea vernalis), Brodo et al. (2013: 208)
- Biatorella hemisphaerica Anzi - Brodo et al. (2013: 208)
- Bilimbia microcarpa (Th. Fr.) Th. Fr. - Brodo et al. (2013: 207 as Bacidia microcarpa)
- Bilimbia sabuletorum (Schreb.) Arnold - Crowe (1994: 70 as Mycobilimbia sabuletorum), Thomson (1997: 422 as Mycobilimbia sabuletorum), Brodo et al. (2013: 208)
- Blastenia ammiospila (Wahlenb.) Arup, Søchting & Frödén - Thomson (1997: 151 as Caloplaca ammiospila), Brodo et al. (2013: 209 as Caloplaca ammiospila)
- Blennothallia crispa (Huds.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 183)
- Botryolepraria lesdainii (Hue) Canals, Hernández-Mariné, Gómez-Bolea & Llimona - Brodo et al. (2013: 208)
- Bryobilimbia hypnorum (Lib.) Fryday, Printzen & S. Ekman - Crowe (1994: 70 as Mycobilimbia hypnorum), Thomson (1997: 351 as Lecidea hypnorum)
- Bryocaulon divergens (Ach.) Kärnefelt - Thomson (1984: 199 as Cornicularia divergens)
- Bryoplaca jungermanniae (Vahl) Søchting, Frödén & Arup - Thomson (1997: 166 as Caloplaca jungermanniae)
- Bryoplaca sinapisperma (Lam. & DC.) Søchting, Frödén & Arup - Thomson (1997: 170 as Caloplaca sinapisperma), Brodo et al. (2013: 209 as Caloplaca sinapisperma)
- Bryoria capillaris (Ach.) Brodo & D. Hawksw. - Crowe (1994: 65), Thomson (1984: 55)
- Bryoria chalybeiformis (L.) Brodo & D. Hawksw. - Crowe (1994: 65), Thomson (1984: 56)
- Bryoria furcellata (Fr.) Brodo & D. Hawksw. - Crowe (1994: 65), Brodo et al. (2013: 208)
- Bryoria fuscescens (Gyeln.) Brodo & D. Hawksw. - Crowe (1994: 65), Thomson (1984: 57), Thomson (1984: 59 as Bryoria lanestris)
- Bryoria nadvornikiana (Gyeln.) Brodo & D. Hawksw. - Crowe (1994: 65), Thomson (1984: 61)
- Bryoria nitidula (Th. Fr.) Brodo & D. Hawksw. - Thomson (1984: 63)
- Bryoria simplicior (Vain.) Brodo & D. Hawksw. - Thomson (1984: 65)
- Bryoria tenuis (E. Dahl) Brodo & D. Hawksw. - Crowe (1994: 65)
- Bryoria trichodes (Michx.) Brodo & D. Hawksw. - Crowe (1994: 65), Thomson (1984: 68)
- Bryoria vrangiana (Gyeln.) Brodo & D. Hawksw. - Thomson (1984: 69)
- Buellia arnoldii Servít - Crowe (1994: 65), Etayo & Marbach (2003: 369)
- Buellia disciformis (Fr.) Mudd - Crowe (1994: 65), Thomson (1997: 129), Brodo et al. (2013: 208)
- Buellia erubescens Arnold - Crowe (1994: 65 as Buellia stillingiana), Thomson (1997: 131), Brodo et al. (2013: 208)
- Buellia griseovirens (Turner & Borrer ex Sm.) Almb. - Brodo et al. (2013: 208)
- Buellia schaereri De Not. - Brodo et al. (2013: 209)
- Calicium salicinum Pers. - Crowe (1994: 65), Brodo et al. (2013: 209)
- Calicium trabinellum (Ach.) Ach. - Crowe (1994: 65), Thomson (1997: 145), Brodo et al. (2013: 209)
- Calicium viride Pers. - Crowe (1994: 65)
- Caloplaca cerina (Ehrh. ex Hedwig) Th. Fr. - Crowe (1994: 65), Thomson (1997: 154), Brodo et al. (2013: 209)
- Caloplaca chlorina (Flot.) H. Olivier - Brodo et al. (2013: 209)
- Caloplaca epithallina Lynge - Crowe (1994: 65), Thomson (1997: 158)
- Caloplaca fraudans (Th. Fr.) H. Olivier - Thomson (1997: 162)
- Caloplaca microphyllina (Tuck.) Hasse - Crowe (1994: 65)
- Caloplaca saxicola (Hoffm.) Nordin - Thomson (1997: 169), Brodo et al. (2013: 209)
- Caloplaca sideritis (Tuck.) Zahlbr. - Brodo et al. (2013: 209)
- Caloplaca stillicidiorum (Vahl) Lynge - Thomson (1997: 172)
- Caloplaca ulmorum (Fink) Fink - Crowe (1994: 65)
- Candelaria concolor (Dicks.) B. Stein - Crowe (1994: 65), Brodo et al. (2013: 209)
- Candelariella aurella (Hoffm.) Zahlbr. - Thomson (1997: 182), Brodo et al. (2013: 209)
- Candelariella canadensis H. Magn. - Magnusson (1952: 216 Protologue), Westberg (2010: 119 Lectotype)
- Candelariella coralliza (Nyl.) H. Magn. - Thomson (1997: 183)
- Candelariella efflorescens R. C. Harris & W. R. Buck - Crowe (1994: 65), Thomson (1997: 185)
- Candelariella lutella (Vain.) Räsänen - Thomson (1997: 185)
- Candelariella vitellina (Hoffm.) Müll. Arg. - Crowe (1994: 65), Thomson (1997: 189)
- Candelariella xanthostigma (Ach.) Lettau - Crowe (1994: 65), Thomson (1997: 190)
- Carbonicola anthracophila (Nyl.) Bendiksby & Timdal - Crowe (1994: 68 as Hypocenomyce anthracophila)
- Catillaria glauconigrans (Tuck.) Hasse - Crowe (1994: 65), Thomson (1997: 197)
- Catillaria muscicola Lynge - Thomson (1997: 198)
- Catinaria atropurpurea (Schaer.) Vezda & Poelt - Crowe (1994: 65), Thomson (1997: 201)
- Cetraria arenaria Kärnef. - Crowe (1994: 65)
- Cetraria ericetorum Opiz subsp. ericetorum - Ahti (1964: 19), Thomson (1984: 79), Crowe (1994: 65)
- Cetraria islandica (L.) Ach. - Ahti (1964: 19), Thomson (1984: 84), Crowe (1994: 66)
- Cetraria laevigata Rass. - Thomson (1984: 88)
- Cetrariella delisei (Bory ex Schaer.) Kärnefelt & A. Thell - Ahti (1964: 19 as Cetraria delisei)
- Cetrelia cetrarioides (Duby) W. L. Culb. & C. F. Culb. - Ahti (1964: 20 as Parmelia cetrarioides)
- Cetrelia chicitae (W. L. Culb.) W. L. Culb. & C. F. Culb. - Crowe (1994: 66)
- Cetrelia olivetorum (Nyl.) W. L. Culb. & C. F. Culb. - Crowe (1994: 66)
- Chaenotheca brunneola (Ach.) Müll. Arg. - Crowe (1994: 66)
- Chaenotheca chrysocephala (Turner ex Ach.) Th. Fr. - Crowe (1994: 66), Thomson (1997: 205)
- Chaenotheca ferruginea (Turn. ex Sm.) Mig. - Crowe (1994: 66)
- Chaenotheca furfuracea (L.) Tibell - Crowe (1994: 66), Thomson (1997: 210 as Coniocybe furfuracea)
- Chaenotheca hispidula (Ach.) Zahlbr. - Crowe (1994: 66)
- Chaenotheca stemonea (Ach.) Müll. Arg. - Crowe (1994: 66)
- Chaenotheca trichialis (Ach.) Th. Fr. - Crowe (1994: 66)
- Chrysothrix chlorina (Ach.) J. R. Laundon - Crowe (1994: 66)
- Circinaria caesiocinerea (Nyl. ex Malbr.) A. Nordin, S. Savić & Tibell - Crowe (1994: 64 as Aspicilia caesiocinerea), Thomson (1997: 65 as Aspicilia caesiocinerea)
- Cladonia acuminata ( Ach.) Norrl. var. acuminata - Ahti (1964: 13), Ahti (1964: 13 as C. acuminata var. norrlinii), Thomson (1984: 105), Thomson (1984: 152 as Cladonia norrlinii), Crowe (1994: 66)
- Cladonia amaurocraea (Flörke) Schaer. - Ahti (1964: 14), Thomson (1984: 107), Crowe (1994: 66)
- Cladonia arbuscula (Wallr.) Rabenh. subsp. arbuscula - Ahti (1964: 14), Thomson (1984: 110), Crowe (1994: 66 as Cladina arbuscula)
- Cladonia arbuscula (Wallr.) Rabenh. subsp. beringiana Ahti - Ahti (1964: 14)
- Cladonia bacillaris (Ach.) Nyl. - Ahti (1964: 15), Thomson (1984: 111), Crowe (1994: 66)
- Cladonia bacilliformis (Nyl.) Vain. - Ahti (1964: 15),Thomson (1984: 112)
- Cladonia bellidiflora (Ach.) Schaer. - Ahti (1964: 15)
- Cladonia botrytes (Hag.) Willd. - Ahti (1964: 15), Thomson (1984: 114), Crowe (1994: 66)
- Cladonia caespiticia (Pers.) Flörke - Crowe (1994: 66)
- Cladonia cariosa (Ach.) Spreng. - Ahti (1964: 15), Thomson (1984: 116), Crowe (1994: 66)
- Cladonia carneola (Fr.) Fr. - Thomson (1984: 117)
- Cladonia cenotea (Ach.) Schaer. - Ahti (1964: 15), Thomson (1984: 118), Crowe (1994: 66)
- Cladonia cervicornis (Ach.) Flot. - Ahti (1964: 18 as Cladonia verticillata var. cervicornis)
- Cladonia chlorophaea (Flörke ex. Sommerf.) Spreng. - Ahti (1964: 15), Thomson (1984: 119), Crowe (1994: 66)
- Cladonia coccifera (L.) Willd. - Ahti (1964: 15), Thomson (1984: 121), Crowe (1994: 66)
- Cladonia coniocraea (Flörke) Spreng. - Ahti (1964: 15), Thomson (1984: 122), Crowe (1994: 66)
- Cladonia cornuta (L.) Hoffm. - Ahti (1964: 15), Thomson (1984: 124), Crowe (1994: 66)
- Cladonia crispata (Ach.) Flot. - Ahti (1964: 15), Thomson (1984: 125), Crowe (1994: 66)
- Cladonia cristatella Tuck. - Ahti (1964: 15), Crowe (1994: 66)
- Cladonia cryptochlorophaea Asah. - Thomson (1984: 126)
- Cladonia cyanipes (Somm.) Nyl. - Ahti (1964: 16), Thomson (1984: 127), Crowe (1994: 66)
- Cladonia decorticata (Flörke) Spreng. - Ahti (1964: 16), Thomson (1984: 128)
- Cladonia deformis (L.) Hoffm. - Ahti (1964: 16), Thomson (1984: 129), Crowe (1994: 66)
- Cladonia digitata (L.) Hoffm. - Ahti (1964: 16), Thomson (1984: 131), Crowe (1994: 66)
- Cladonia ecmocyna Leight. - Ahti (1964: 16), Thomson (1984: 132)
- Cladonia fimbriata (L.) Fr. - Ahti (1964: 16), Thomson (1984: 133), Crowe (1994: 66)
- Cladonia floerkeana (Fr.) Flörke - Thomson (1984: 134)
- Cladonia furcata (Huds.) Schrad. - Crowe (1994: 66)
- Cladonia glauca Flörke - Thomson (1984: 135)
- Cladonia gracilis (L.) Willd. subsp. gracilis - Ahti (1964: 16 as Cladonia gracilis var. gracilis), Thomson (1984: 137 as Cladonia gracilis var. gracilis), Crowe (1994: 66)
- Cladonia gracilis (L.) Willd. subsp. elongata - Ahti (1964: 16 as Cladonia gracilis var. elongata)
- Cladonia gracilis (L.) Willd. subsp. dilatata - Ahti (1964: 16 as Cladonia gracilis var. dilatata)
- Cladonia gracilis (L.) Willd. subsp. turbinata (Ach.) Ahti - Thomson (1984: 136), Crowe (1994: 67)
- Cladonia grayi G. Merr. ex Sandst. - Thomson (1984: 139), Crowe (1994: 67)
- Cladonia ignatii Ahti, Pino-Bodas & J. W. McCarthy - Ahti et al. (2018: 633 Protologue) Type in Helsinki, Finland H)
- Cladonia macilenta Hoffm. - Ahti (1964: 16)
- Cladonia macrophylla (Schaer.) Stenh. - Ahti (1964: 14 as Cladonia alpicola), Thomson (1984: 141), Crowe (1994: 67)
- Cladonia magyarica Vain. ex Gyeln. - Crowe (1994: 67)
- Cladonia maxima (Asahina) Ahti - Thomson (1984: 145), Crowe (1994: 67)
- Cladonia merochlorophaea Asahina - Thomson (1984: 143), Crowe (1994: 67)
- Cladonia mitis Sandst. - Ahti (1964: 16), Thomson (1984: 148), Crowe (1994: 66 as Cladina mitis)
- Cladonia multiformis G. Merr. - Ahti (1964: 16), Thomson (1984: 149), Crowe (1994: 67)
- Cladonia parasitica (Hoffm.) Hoffm. - Ahti (1964: 16 as Cladonia delicata)
- Cladonia phyllophora Ehrh. ex Hoffm. - Ahti (1964: 16 as Cladonia degenerans), Thomson (1984: 153), Crowe (1994: 67)
- Cladonia pleurota (Flörke) Schaer. - Ahti (1964: 15 as Cladonia coccifera var. pleurota), Thomson (1984: 154), Crowe (1994: 67), Backor & Fahselt (2004: 149)
- Cladonia pocillum (Ach.) O. J. Rich. - Ahti (1964: 17), Thomson (1984: 156)
- Cladonia pyxidata (L.) Hoffm. - Ahti (1964: 17), Thomson (1984: 158), Crowe (1994: 67)
- Cladonia ramulosa (With.) J. R. Laundon - Thomson (1984: 109 as Cladonia anomaea)
- Cladonia rangiferina (L.) Weber ex F. H. Wigg. - Ahti (1964: 17), Thomson (1984: 159), Crowe (1994: 66 as Cladina rangiferina)
- Cladonia rei Schaer. - Ahti (1964: 17 as Cladonia nemoxyna), Crowe (1994: 67)
- Cladonia scabriuscula (Del. in Duby) Nyl. - Ahti (1964: 17), Thomson (1984: 160), Crowe (1994: 67)
- Cladonia squamosa (Scop.) Hoffm. - Ahti (1964: 17), Thomson (1984: 161), Crowe (1994: 67)
- Cladonia stellaris (Opiz) Pouzar & Vezda - Ahti (1964: 14 as Cladonia alpestris), Ahti (1964: 14 as Cladonia alpestris var. aberrans), Thomson (1984: 104 as Cladonia aberrans), Thomson (1984: 163), Crowe (1994: 66 as Cladina stellaris)
- Cladonia stricta (Nyl.) Nyl. - Thomson (1984: 164)
- Cladina stygia (Fr.) Ruoss - Crowe (1994: 66)
- Cladonia subfurcata (Nyl.) Arnold - Ahti (1964: 16 as Cladonia delessertii), Thomson (1984: 166)
- Cladonia subulata (L.) F. H. Wigg. - Ahti (1964: 17), Thomson (1984: 168), Crowe (1994: 67)
- Cladonia sulphurina (Michx.) Fr. - Ahti (1964: 16 as Cladonia gonecha)Thomson (1984: 169), Crowe (1994: 67)
- Cladonia symphycarpa (Ach.) Fr. - Ahti (1964: 17 as C. symphycarpia), Thomson (1984: 170)
- Cladonia trassii Nyl. - Ahti (1964: 16 as Cladonia lepidota)
- Cladonia turgida Ehrh. ex Hoffm. - Ahti (1964: 18), Thomson (1984: 172), Crowe (1994: 67)
- Cladonia uncialis (L.) F. H. Wigg. - Ahti (1964: 18), Thomson (1984: 173), Crowe (1994: 67)
- Cladonia verticillata (Hoffm.) Schaer. - Ahti (1964: 18), Thomson (1984: 174), Crowe (1994: 66 as Cladonia cervicornis subsp. verticillata)
- Cladonia wainioi Asah. - Ahti (1964: 17 as Cladonia pseudorangiformis), Thomson (1984: 157 as Cladonia pseudorangiformis)
- Cliostomum griffithii (Sm.) Coppins - Crowe (1994: 67)
- Collema flaccidum (Ach.) Ach. - Crowe (1994: 67)
- Collema furfuraceum (Schaer.) Du Rietz - Ahti (1964: 18), Thomson (1984: 187), Crowe (1994: 67)
- Collema glebulentum (Nyl. ex Cromb.) Degel. - Thomson (1984: 185)
- Collema nigrescens (Huds.) DC. - Crowe (1994: 67)
- Collema pulchellum Ach. var. pulchellum - Ahti (1964: 18), Crowe (1994: 67)
- Collema pulchellum Ach. var. subnigrescens (Müll. Arg.) Degel. - Crowe (1994: 67)
- Collema subflaccidum Degel. - Crowe (1994: 67)
- Cresponea chloroconia Tuck. - Crowe (1994: 68 as Lecanactis chloroconia)
- Cyphelium tigillare (Ach.) Ach. - Crowe (1994: 67), Thomson (1997: 214)
- Dactylina arctica (Richards.) Nyl. - Thomson (1984: 203)
- Dermatocarpon luridum (With.) J. R. Laundon - Ahti (1964: 13 as Dermatocarpon fluviatile), Thomson (1984: 213 as Dermatocarpon fluviatile), Crowe (1994: 67)
- Dermatocarpon miniatum (L.) Mann. - Ahti (1964: 13), Thomson (1984: 219), Crowe (1994: 67)
- Dermatocarpon moulinsii (Mont.) Zahlbr. - Crowe (1994: 67)
- Dimelaena oreina (Ach.) Norman - Crowe (1994: 67), Thomson (1997: 216)
- Diploschistes aeneus (Müll. Arg.) Lumbsch - Crowe (1994: 67)
- Diploschistes muscorum (Scop.) R. Sant. - Crowe (1994: 67), Thomson (1997: 218)
- Diploschistes scruposus (Schreb.) Norman - Crowe (1994: 67), Thomson (1997: 218)
- Diplotomma alboatrum (Hoffm.) Flot. - Crowe (1994: 67), Thomson (1997: 127 as Buellia alboatra)
- Enchylium bachmanianum (Fink) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 179 as Collema bachmanianum)
- Enchylium polycarpon (Hoffm.) Otálora, P. M. Jørg. & Wedin -Thomson (1984: 190 as Collema polycarpon)
- Enchylium tenax (Sw.) Gray - Thomson (1984: 191 as Collema tenax)
- Endocarpon tortuosum Herre - Thomson (1984: 222)
- Ephebe lanata (L.) Vain. - Crowe (1994: 67)
- Evernia mesomorpha Nyl. - Thomson (1984: 229), Crowe (1994: 67)
- Evernia prunastri (L.) Ach. - Crowe (1994: 67)
- Flavocetraria cucullata (Bellardi) Kärnefelt & A. Thell - Ahti (1964: 19)
- Flavocetraria nivalis (L.) Kärnefelt & A. Thell - Ahti (1964: 19 as Cetraria nivalis), Thomson (1984: 92 as Cetraria nivalis), Crowe (1994: 66 as Cetraria nivalis)
- Flavoparmelia caperata (L.) Hale - Ahti (1964: 20 as Parmelia caperata), Crowe (1994: 67)
- Flavoplaca citrina (Hoffm.) Arup, Frödén & Søchting - Yarranton & Green (1966: 450 as Caloplaca citrina), Thomson (1997: 155 as Caloplaca citrina), Brodo et al. (2013: 209 as Caloplaca citrina)
- Flavoplaca flavocitrina (Nyl.) Arup, Frödén & Søchting - Brodo et al. (2013: 209 as Caloplaca flavocitrina)
- Flavopunctelia flaventior (Stirt.) Hale - Crowe (1994: 67)
- Fuscidea recensa (Stirton) Hertel, V. Wirth & Vezda - Thomson (1997: 234)
- Fuscopannaria leucosticta (Tuck. ex E. Michener) P. M. Jørg. - Crowe (1994: 70 as Pannaria leucosticta)
- Fuscopannaria praetermissa (Nyl.) P. M. Jørg. - Ahti (1964: 18 as Parmeliella lepidiota), Crowe (1994: 70 as Pannaria praetermissa)
- Gallowayella tibellii (S. Y. Kondr. & Kärnefelt) S. Y. Kondr., Fedorenko, S. Stenroos, Kärnefelt, Elix, J. S. Hur & A. Thell - xx (xx: 125 as Xanthoria tibellii)
- Graphis scripta (L.) Ach. - Crowe (1994: 68)
- Gyalolechia flavorubescens (Hudson) Søchting, Frödén & Arup - Yarranton & Green (1966: 450 as Caloplaca aurantiaca), Crowe (1994: 65 as Caloplaca flavorubescens)
- Gyalolechia flavovirescens (Wulf.) Søchting, Frödén & Arup - Crowe (1994: 65 as Caloplaca flavovirescens), Thomson (1997: 161 as Caloplaca flavovirescens), Brodo et al. (2013: 209)
- Gyalolechia xanthostigmoidea (Räsänen) Søchting, Frödén & Arup - Crowe (1994: 65 as Caloplaca discolor), Thomson (1997: 158 as Caloplaca discolor)
- Heterodermia obscurata (Nyl.) Trevisan - Crowe (1994: 68)
- Heterodermia speciosa (Wulfen) Trevisan - Crowe (1994: 68)
- Hymenelia epulotica (Ach.) Lutzoni - Thomson (1997: 253 as Ionaspis epulotica)
- Hypocenomyce scalaris (Ach. ex Lilj.) M. Choisy - Crowe (1994: 68), Thomson (1997: 248)
- Hypogymnia bitteri (Lynge) Ahti - Ahti (1964: 20), Thomson (1984: 238), Crowe (1994: 68)
- Hypogymnia physodes (L.) Nyl. - Ahti (1964: 20), Thomson (1984: 241), Crowe (1994: 68)
- Hypogymnia tubulosa - Ahti (1964: 20), Crowe (1994: 68)
- Hypogymnia vittata (Ach.) Parr. - Crowe (1994: 68)
- Icmadophila ericetorum (L.) Zahlbr. - Crowe (1994: 68), Thomson (1997: 249)
- Imshaugia aleurites (Ach.) Nyl. em. Lettau - Thomson (1984: 321 as Parmeliopsis aleurites), Crowe (1994: 68)
- Imshaugia placorodia (Ach.) S. L. F. Mey. - Crowe (1994: 68)
- Ionaspis lacustris (With.) Lutzoni - Thomson (1997: 245 as Hymenelia lacustris)
- Lasallia papulosa (Ach.) Llano - Thomson (1984: 245), Crowe (1994: 68)
- Lasallia pensylvanica (Hoffm.) Llano - Thomson (1984: 246)
- Lathagrium cristatum (L.) Otálora, P.M. Jørg. & Wedin - Ahti (1964: 18 as Collema cristatum), Thomson (1984: 184 as Collema cristatum)
- Lathagrium fuscovirens (With.) Otálora, P.M. Jørg. & Wedin - Ahti (1964: 18 as Collema tuniforme), Thomson (1984: 192 as Collema tuniforme)
- Lathagrium undulatum (Laurer ex Flot.) Otálora, P. M. Jørg. & Wedin - Crowe (1994: 67 as Collema undulatum)
- Lecania fuscella (Schaer.) A. Massal. - Crowe (1994: 68)
- Lecania naegelii (Hepp) Diederich & van den Boom - Crowe (1994: 64 as Bacidia naegelii)
- Lecanora albella (Pers.) Ach. var. albella - Crowe (1994: 68 as Lecanora pallida)
- Lecanora albellula (Nyl.) Th. Fr. - Thomson (1997: 299 as Lecanora piniperda)
- Lecanora allophana (Ach.) Nyl. - Crowe (1994: 68), Thomson (1997: 266)
- Lecanora argentea Oxner & Volk. - Crowe (1994: 68)
- Lecanora argopholis (Ach.) Ach. - Crowe (1994: 68), Thomson (1997: 267)
- Lecanora cadubriae (A. Massal.) Hedl. - Thomson (1997: 271)
- Lecanora cateilea (Ach.) A. Massal. - Crowe (1994: 68)
- Lecanora cenisia Ach. - Crowe (1994: 68), Thomson (1997: 272)
- Lecanora chlarotera Nyl. - Crowe (1994: 68 as Lecanora rugosella), Thomson (1997: 273), Thomson (1997: 301 as Lecanora rugosella)
- Lecanora circumborealis Brodo & Vitik. - Crowe (1994: 68), Thomson (1997: 274)
- Lecanora crenulata Hook. - Thomson (1997: 277)
- Lecanora dispersa (Pers.) Sommerf. - Crowe (1994: 68), Thomson (1997: 278)
- Lecanora epibryon (Ach.) Ach. - Thomson (1997: 279)
- Lecanora fuliginosa Brodo - Thomson (1997: 281)
- Lecanora hagenii (Ach.) Ach. - Crowe (1994: 68), Thomson (1997:286)
- Lecanora hybocarpa (Tuck.) Brodo - Crowe (1994: 68)
- Lecanora intricata (Ach.) Ach.- Thomson (1997: 288)
- Lecanora meridionalis H. Magn. - Crowe (1994: 68)
- Lecanora muralis (Schreber) Rabenh. - Crowe (1994: 68), Thomson (1997: 295)
- Lecanora opiniconensis Brodo - Crowe (1994: 68)
- Lecanora orae-frigidae R. Sant. - Thomson (1997: 297)
- Lecanora perplexa Brodo - Crowe (1994: 68), Thomson (1997: 298)
- Lecanora polytropa (Ehrh. in Hoffm.) Rabenh. - Crowe (1994: 68), Thomson (1997: 299)
- Lecanora pulicaris (Pers.) Ach. - Crowe (1994: 68), Thomson (1997: 301)
- Lecanora reagens Norman - Crowe (1994: 68)
- Lecanora rupicola (L.) Zahlbr. - Crowe (1994: 68), Thomson (1997: 303)
- Lecanora saligna (Schrad.) Zahlbr. - Crowe (1994: 68), Thomson (1997: 305)
- Lecanora sambuci (Pers.) Nyl. - Thomson (1997: 306)
- Lecanora subintricata (Nyl.) Th. Fr. - Crowe (1994: 68)
- Lecanora subrugosa Nyl. - Thomson (1997: 308)
- Lecanora symmicta (Ach.) Ach. - Crowe (1994: 68), Thomson (1997: 309)
- Lecanora thysanophora R. C. Harris - Crowe (1994: 68)
- Lecanora varia (Hoffm.) Ach. - Thomson (1997: 311)
- Lecanora wisconsinensis H. Magn. - Crowe (1994: 68)
- Lecidea albohyalina (Nyl.) Th. Fr. - Thomson (1997: 325)
- Lecidea atrobrunnea (Ramond ex Lam. & DC.) Schaer. - Crowe (1994: 68), Thomson (1997: 327)
- Lecidea auriculata Th. Fr. - Thomson (1997: 329)
- Lecidea lapicida (Ach.) Ach. - Thomson (1997: 357)
- Lecidea lithophila (Ach.) Ach. - Crowe (1994: 69), Thomson (1997: 362)
- Lecidea oreinoides (Körb.) W. Weber & Hertel - Crowe (1994: 69)
- Lecidea paupercula Th. Fr. - Thomson (1997: 369)
- Lecidea plana (J. Lahm. in Körb.) Nyl. - Crowe (1994: 69), Thomson (1997: 372)
- Lecidea tessellata Flörke - Crowe (1994: 69), Thomson (1997: 384)
- Lecidea turgidula Fr. - Thomson (1997: 388), Brodo et al. (2013: 208 as Biatora turgidula)
- Lecidella carpathica Körb. - Crowe (1994: 69), Thomson (1997: 395)
- Lecidella elaeochroma (Ach.) Hazslin - Crowe (1994: 69), Thomson (1997: 396)
- Lecidella euphorea (Flörke) Hertel - Crowe (1994: 69), Thomson (1997: 398)
- Lecidella stigmatea (Ach.) Hertel & Leuck. - Crowe (1994: 69), Thomson (1997: 402)
- Lecidella wulfenii (Hepp) Körb. - Thomson (1997: 403)
- Lempholemma polyanthes (Schrad.) Malme - Crowe (1994: 69 as Lempholemma myriococcum), Thomson (1997: 407 as Lempholemma myriococcum)
- Lempholemma vesiculiferum Henssen - Schultz (2003: 156)
- Lepra amara (Ach.) Hafellner - Crowe (1994: 71 as Pertusaria amara)
- Lepra multipunctoides (Dibben) Lendemer & R. C. Harris - Crowe (1994: 71 as Pertusaria multipunctoides)
- Lepra pustulata (Brodo & W. L. Culb.) Lendemer & R. C. Harris - Crowe (1994: 69 as Loxospora pustulata)
- Lepraria disjuncta Lendemer - Lendemer (2010: 279 Type in New York, USA NY)
- Lepraria finkii (B. de Lesd. in Hue) R. C. Harris - Crowe (1994: 69)
- Lepraria membranacea (Dicks.) Vain. - Crowe (1994: 69 as Leproloma membranaceum)
- Lepraria neglecta (Nyl.) Lettau - Crowe (1994: 69), Crowe (1994: 69 as Lepraria zonata)
- Leproplaca chrysodeta (Vain. ex Räsänen) J. R. Laundon - Crowe (1994: 69 as Caloplaca chrysodeta), Brodo et al. (2013: 209 as Caloplaca chrysodeta)
- Leproplaca cirrochroa (Ach.) Arup, Frödén & Søchting - Yarranton & Green (1966: 450 as Caloplaca cirrochroa), Crowe (1994: 65 as Caloplaca cirrochroa), Brodo et al. (2013: 209 as Caloplaca cirrochroa)
- Leptogium burnetiae C. W. Dodge - Crowe (1994: 69)
- Leptogium chloromelum (Ach.) Nyl. - Ahti (1964: 18)
- Leptogium cyanescens (Ach.) Körb. - Ahti (1964: 18), Crowe (1994: 69)
- Leptogium saturninum (Dicks.) Nyl. - Ahti (1964: 18), Thomson (1984: 262), Crowe (1994: 69)
- Leptorhaphis atomaria (Ach.) Szatala - Crowe (1994: 69)
- Lichenomphalia hudsoniana (H. S. Jenn.) Redhead, Lutzoni, Moncalvo & Vilgalys - Thomson (1984: 196 as Coriscium viride), Crowe (1994: 70 as Omphalina hudsoniana)
- Lichinella nigritella (Lettau) P. P. Moreno & Egea - Crowe (1994: 67 as Gonohymenia nigritella)
- Lobaria pulmonaria (L.) Hoffm. - Crowe (1994: 69)
- Lobaria quercizans Michx. - Crowe (1994: 69)
- Lobarina scrobiculata (Scop.) Nyl. ex Cromb. - Thomson (1984: 271 as Lobaria scrobiculata), Crowe (1994: 69 as Lobaria scrobiculata)
- Lobothallia alphoplaca (Wahlenb. in Ach.) Hafellner - Crowe (1994: 64 as Aspicilia alphoplaca), Thomson (1997: 59 as Aspicilia alphoplaca)
- Lopadium pezizoideum (Ach.) Körb. - Crowe (1994: 69), Thomson (1997: 411)
- Loxospora cismonica (Beltram.) Hafellner - Crowe (1994: 69)
- Loxospora elatina (Ach.) A. Massal. - Crowe (1994: 69)
- Loxospora ochrophaea (Tuck.) R. C. Harris in Egan - Crowe (1994: 69)
- Massalongia carnosa (Dicks.) Körb. - Ahti (1964: 18), Thomson (1984: 274)
- Megaspora verrucosa (Ach.) Hafellner & V. Wirth - Crowe (1994: 69), Crowe (1994: 70 as Pachyspora verrucosa), Thomson (1997: 443 as Pachyospora verrucosa)
- Melanelia hepatizon (Ach.) A. Thell - Ahti (1964: 19 as Cetraria hepatizon), Thomson (1984: 82 as Cetraria hepatizon), Crowe (1994: 65 as Cetraria hepatizon)
- Melanelixia fuliginosa (Lamy) O. Blanco et al. - Thomson (1984: 303 sub Parmelia glabratula)
- Melanelixia subaurifera (Nyl.) O. Blanco et al. - Thomson (1984: 316 sub Parmelia subaurifera), Crowe (1994: 70 as Melanelia subaurifera)
- Melanohalea exasperatula (Nyl.) O. Blanco et al. - Ahti (1964: 20 as Parmelia aspera), Ahti (1964: 20 as Parmelia exasperatula), Thomson (1984: 300 sub Parmelia exasperatula), Crowe (1994: 69 as Melanelia exasperatula)
- Melanohalea infumata (Nyl.) O. Blanco et al. - Ahti (1964: 20 as Parmelia infumata), Thomson (1984: 304 sub Parmelia infumata), Crowe (1994: 69 as Melanelia infumata)
- Melanohalea olivacea (L.) O. Blanco et al. - Ahti (1964: 20 as Parmelia olivacea), Thomson (1984: 306 sub Parmelia olivacea), Crowe (1994: 69 as Melanelia olivacea)
- Melanohalea septentrionalis (Lynge) O. Blanco et al. - Thomson (1984: 311 sub Parmelia septentrionalis), Crowe (1994: 69 as Melanelia septentrionalis)
- Micarea melaena (Nyl.) Hedl. - Thomson (1997: 419)
- Micarea prasina Fr. - Crowe (1994: 70)
- Montanelia disjuncta (Erichsen) Divakar, A. Crespo, Wedin & Essl. - Ahti (1964: 20 as Parmelia disjuncta), Thomson (1984: 299 sub Parmelia disjuncta), Crowe (1994: 69 as Melanelia disjuncta)
- Montanelia panniformis (Nyl.) Divakar, A. Crespo, Wedin & Essl. - Thomson (1984: 309 as Parmelia panniformis), Crowe (1994: 69 as Melanelia panniformis)
- Montanelia sorediata (Ach.) Divakar, A. Crespo, Wedin & Essl. - Thomson (1984: 312 sub Parmelia sorediosa), Crowe (1994: 69)
- Montanelia tominii (Oxner) Divakar, A. Crespo, Wedin & Essl. - Thomson (1984: 317 sub Parmelia substygia), Crowe (1994: 70 as Melanelia tominii)
- Mycobilimbia berengeriana (A. Massal.) Hafellner & V. Wirth - Crowe (1994: 70), Thomson (1997: 331 as Lecidea berengeriana), Sarrión et al. (2003: 2)
- Mycobilimbia carneoalbida (Müll. Arg.) S. Ekman & Printzen - Thomson (1997: 110 as Bacidia sphaeroides)
- Mycobilimbia epixanthoides (Nyl.) Vitik., Ahti, Kuusinen, Lommi & T. Ulvinen - Thomson (1997: 101 as Bacidia epixanthoides)
- Mycobilimbia pilularis (Körb) Hafellner & Türk - Crowe (1994: 65 as Biatora sphaeroides)
- Mycobilimbia tetramera (De Not.) Vitik., Ahti, Kuusinen, Lommi & T. Ulvinen ex Hafellner & Türk - Crowe (1994: 70 as Mycobilimbia obscurata), Thomson (1997: 422 as Mycobilimbia obscurata)
- Mycoblastus alpinus (Fr.) Kernst. - Crowe (1994: 70)
- Mycoblastus sanguinarius (L.) Norman - Crowe (1994: 70), Thomson (1997: 426)
- Myriospora smaragdula (Wahlenb. in Ach.) Knudsen & B. Abbott - Thomson (1997: 34 as Acarospora smaragdula)
- Nephroma arcticum (L.) Torss. - Thomson (1984: 277)
- Nephroma bellum (Spreng.) Tuck. - Thomson (1984: 278), Crowe (1994: 70),
- Nephroma expallidum (Nyl.) Nyl. - Thomson (1984: 279)
- Nephroma helveticum Ach. var. helveticum - Thomson (1984: 280), Crowe (1994: 70),
- Nephroma parile (Ach.) Ach. - Thomson (1984: 282), Crowe (1994: 70),
- Nephroma resupinatum (L.) Ach. - Thomson (1984: 283), Crowe (1994: 70)
- Ochrolechia androgyna (Hoffm.) Arnold - Crowe (1994: 70), Thomson (1997: 430)
- Ochrolechia frigida (Schwartz) Lynge - Thomson (1997: 431)
- Ochrolechia gyalectina (Nyl.) Zahlbr. - Thomson (1997: 433)
- Ochrolechia inaequatula (Nyl.) Zahlbr. - Thomson (1997: 434)
- Ochrolechia mexicana Vain. - Crowe (1994: 70)
- Ochrolechia pseudopallescens Brodo - Crowe (1994: 70)
- Ochrolechia trochophora (Vain.) Oshio var. trochophora - Crowe (1994: 70)
- Ochrolechia upsaliensis (L.) A. Massal. - Thomson (1997: 436)
- Pannaria conoplea (Ach.) Bory - Ahti (1964: 18 as Pannaria pityrea), Thomson (1984: 292)
- Pannaria hookeri (Borrer ex Sm.) Nyl. - Crowe (1994: 70)
- Parmelia fraudans (Nyl.) Nyl. - Ahti (1964: 20 as Parmelia fraudans), Thomson (1984: 302 sub Parmelia fraudans), Crowe (1994: 70)
- Parmelia omphalodes (L.) Ach. - Ahti (1964: 20), Thomson (1984: 308), Crowe (1994: 70)
- Parmelia saxatilis (L.) Ach. - Thomson (1984: 310), Crowe (1994: 70)
- Parmelia squarrosa Hale - Hale (1971: 29), Thomson (1984: 313), Crowe (1994: 70)
- Parmelia sulcata Tayl. - Thomson (1984: 318), Crowe (1994: 70)
- Parmeliella praetermissa (Nyl.) James - Thomson (1984: 320)
- Parmeliella tryptophylla (Ach.) Mül.Arg. - Thomson (1984: 321), Crowe (1994: 70)
- Parmeliopsis ambigua (Wulf.) Nyl. - Thomson (1984: 325), Crowe (1994: 70)
- Parmeliopsis hyperopta (Ach.) Arn. - Thomson (1984: 326), Crowe (1994: 70)
- Parmotrema arnoldii (Du Rietz) Hale - Crowe (1994: 70)
- Parmotrema crinitum (Ach.) M. Choisy - Crowe (1994: 70)
- Parvoplaca tiroliensis (Zahlbr.) Arup, Søchting & Frödén - Thomson (1997: 173 as Caloplaca tiroliensis)
- Peltigera aphthosa (L.) Willd. - Thomson (1984: 329), Crowe (1994: 70)
- Peltigera canina (L.) Willd. - Crowe (1994: 70)
- Peltigera collina (Ach.) Schrad. - Thomson (1984: 334), Crowe (1994: 71)
- Peltigera didactyla (With.) J. R. Laundon - Thomson (1984: 332 as Peltigera canina f. sorediata), Crowe (1994: 71)
- Peltigera elisabethae Gelnik - Crowe (1994: 71)
- Peltigera evansiana Gyeln. - Gyelnik (1932: 39), Crowe (1994: 71)
- Peltigera horizontalis (Huds.) Baumg. - Thomson (1984: 337), Crowe (1994: 71)
- Peltigera lepidophora (Nyl.) Vain. - Thomson (1984: 338), Crowe (1994: 71)
- Peltigera leucophlebia (Nyl.) Gyeln. - Thomson (1984: 330 as Peltigera aphthosa var. leucophlebia), Crowe (1994: 71)
- Peltigera malacea (Ach.) Funck. - Thomson (1984: 339), Crowe (1994: 71)
- Peltigera neckeri Hepp ex Müll. Arg. - Crowe (1994: 71)
- Peltigera neopolydactyla (Gyelnik) Gyelnik - Crowe (1994: 71)
- Peltigera polydactyla (Neck.) Hoffm. - Thomson (1984: 343), Crowe (1994: 71)
- Peltigera ponojensis Gyelnik - Crowe (1994: 71)
- Peltigera praetextata (Flörke ex Sommerf.) Zopf - Crowe (1994: 71)
- Peltigera rufescens (Weiss) Humb. - Thomson (1984: 333 as Peltigera canina var. rufescens), Crowe (1994: 71)
- Peltigera scabrosa Th. Fr. - Thomson (1984: 344), Crowe (1994: 71)
- Peltigera venosa (L.) Baumg. - Thomson (1984: 345), Crowe (1994: 71)
- Pertusaria alpina Hepp ex Ahles - Thomson (1997: 447)
- Pertusaria consocians Dibben - Crowe (1994: 71)
- Pertusaria coriacea (Th. Fr.) Th. Fr. - Thomson (1997: 452)
- Pertusaria dactylina (Ach.) Nyl. - Thomson (1997: 453)
- Pertusaria hymenea (Ach.) Schaer. - Crowe (1994: 71)
- Pertusaria octomela (Norman) Erichsen - Thomson (1997: 457)
- Pertusaria panyrga (Ach.) A. Massal. - Thomson (1997: 459)
- Pertusaria sommerfeltii (Flörke ex Sommerf.) Flörke - Thomson (1997: 461)
- Pertusaria subobducens Nyl. - Thomson (1997: 462)
- Phaeophyscia adiastola (Essl.) Essl. - Crowe (1994: 71)
- Phaeophyscia endococcina (Körb.) Moberg - Thomson (1984: 348), Crowe (1994: 71)
- Phaeophyscia hirsuta (Mereschk.) Essl. - Crowe (1994: 71)
- Phaeophyscia hispidula (Ach.) Essl. - Crowe (1994: 71)
- Phaeophyscia kairamoi (Vain.) Moberg - Crowe (1994: 71)
- Phaeophyscia orbicularis (Necker) Moberg - Crowe (1994: 71)
- Phaeophyscia pusilloides (Zahlbr.) Essl. - Crowe (1994: 71)
- Phaeophyscia rubropulchra (Degel.) Essl. - Crowe (1994: 71)
- Phaeophyscia sciastra (Ach.) Moberg - Thomson (1984: 349), Crowe (1994: 71)
- Phlyctis argena (Sprengel) Flot. - Crowe (1994: 71)
- Phylliscum demangeonii (Moug. & Mont in Mont.) Nyl. - Thomson (1997: 469)
- Physcia adscendens (Fr.) Oliv. - Thomson (1984: 352), Crowe (1994: 71)
- Physcia aipolia (Humb.) Fürnrohr. - Thomson (1984: 353), Crowe (1994: 71)
- Physcia caesia (Hoffm.) Fürnrohr. - Thomson (1984: 354), Crowe (1994: 71)
- Physcia dubia (Hoffm.) Lettau - Thomson (1984: 355), Crowe (1994: 71)
- Physcia millegrana Degel. - Crowe (1994: 71)
- Physcia phaea (Tuck.) J. W. Thomson - Thomson (1984: 356), Crowe (1994: 71)
- Physcia stellaris (L.) Nyl. - Crowe (1994: 71)
- Physcia subtilis Degel. - Crowe (1994: 71)
- Physconia detersa (Nyl.) Poelt - Thomson (1984: 359), Crowe (1994: 71)
- Physconia muscigena (Ach.) Poelt - Thomson (1984: 360), Crowe (1994: 72)
- Physconia perisidiosa (Erichsen) Moberg - Crowe (1994: 72)
- Placidium lachneum (Ach.) B. de Lesd. - Crowe (1994: 65 as Catapyrenium lachneum)
- Placynthiella oligotropha (J. R. Laundon) Coppins & James - Thomson (1997: 474)
- Placynthiella uliginosa (Schrad.) Coppins & James - Thomson (1997: 475)
- Placynthium asperellum (Ach.) Trevisan - Thomson (1984: 365 as Placynthium aspratile), Crowe (1994: 72)
- Placynthium flabellosum (Tuck.) Zahlbr. - Crowe (1994: 72)
- Placynthium nigrum (Huds.) Gray - Thomson (1984: 366), Crowe (1994: 72)
- Platismatia glauca (L.) W. L. Culb. & C. F. Culb. - Ahti (1964: 19 as Cetraria glauca), Thomson (1984: 368), Crowe (1994: 72)
- Platismatia tuckermanii (Oakes) W. L. Culb. & C. F. Culb. - Ahti (1964: 19 as Cetraria tuckermanii), Crowe (1994: 72)
- Polyblastia cupularis A. Massal. - Crowe (1994: 72)
- Polycauliona candelaria (L.) Frödén, Arup, & Søchting - Crowe (1994: 74 as Xanthoria candelaria)
- Polycauliona polycarpa (Hoffm.) Frödén, Arup & Søchting - Thomson (1984: 487 as Xanthoria polycarpa), Crowe (1994: 74 as Xanthoria polycarpa)
- Polysporina simplex (Borrer ex Hook.) Vezda - Thomson (1997: 486)
- Porpidia calcarea Gowan - Crowe (1994: 72)
- Porpidia cinereoatra (Ach.) Hertel & Knoph - Crowe (1994: 72), Crowe (1994: 72 as Porpidia herteliana)
- Porpidia contraponenda (Lowe) Gowan - Crowe (1994: 72 as Porpidia diversa)
- Porpidia crustulata (Ach.) Hertel & Knoph - Crowe (1994: 72)
- Porpidia macrocarpa (DC. in Lam. & DC.) Hertel & Schwab - Crowe (1994: 72)
- Porpidia speirea (Ach.) Kremp. - Thomson (1997: 497), Crowe (1994: 72)
- Porpidia tuberculosa (Sm. in Sm. & Sow.) Hertel & Knoph - Thomson (1997: 500)
- Protoblastenia rupestris (Scop.) Steiner - Crowe (1994: 72), Thomson (1997: 503)
- Protopannaria pezizoides (Web.) P. M. Jørg. & S. Ekman - Ahti (1964: 18 as Pannaria pezizoides), Thomson (1984: 294 as Pannaria pezizoides)
- Protoparmelia badia (Hoffm.) Hafellner - Crowe (1994: 72), Thomson (1997: 269 as Lecanora badia)
- Pseudevernia consocians (Vain.) Hale & W. L. Culb. - Crowe (1994: 72)
- Protothelenella sphinctrinoidella (Nyl.) Mayrh. & Poelt - Thomson (1997: 504)
- Protothelenella sphinctrinoides (Nyl.) Mayrh. & Poelt - Thomson (1997: 505)
- Pseudocyphellaria crocata (L.) Vain. - Crowe (1994: 72)
- Pseudoparmelia uleana (Nyl.) Hale - Crowe (1994: 72 erroneously as Pseudoparmelia sphaerospora)
- Psilolechia lucida (Ach.) M. Choisy - Crowe (1994: 72)
- Psora globifera (Ach.) A. Massal. - Thomson (1997: 508)
- Psoroma hypnorum (Vahl) Gray - Ahti (1964: 18), Thomson (1984: 375)
- Psorula rufonigra (Tuck.) Schneider - Crowe (1994: 72), Thomson (1997: 515)
- Punctelia rudecta (Ach.) Krog - Crowe (1994: 72)
- Punctelia stictica (Duby) Krog - Crowe (1994: 72)
- Ramalina americana Hale - Crowe (1994: 72)
- Ramalina calicaris (L.) Fr. - Crowe (1994: 72)
- Ramalina dilacerata (Hoffm.) Hoffm. - Crowe (1994: 72)
- Ramalina farinacea (L.) Ach. - Crowe (1994: 72)
- Ramalina intermedia (Del. ex Nyl.) Nyl. - Thomson (1984: 379), Crowe (1994: 72)
- Ramalina obtusata (Arnold) Bitter - Crowe (1994: 72)
- Ramalina pollinaria (Westr.) Ach. - Crowe (1994: 72)
- Ramalina roesleri (Hochst. ex Schaerer) Hue - Thomson (1984: 233 as Fisturiella roesleri), Crowe (1994: 72)
- Ramalina thrausta (Ach.) Nyl. - Thomson (1984: 382), Crowe (1994: 72)
- Ramboldia cinnabarina (Sommerf.) Kalb, Lumbsch & Elix - Crowe (1994: 69 as Lecidea cinnabarina)
- Rhizocarpon badioatrum (Flörke ex Spreng.) Th. Fr. - Crowe (1994: 72), Thomson (1997: 524)
- Rhizocarpon cinereovirens (Müll. Arg.) Vain. - Crowe (1994: 72), Thomson (1997: 528)
- Rhizocarpon concentricum (Davis) Beltram. - Thomson (1997: 529)
- Rhizocarpon disporum (Naeg. ex Hepp) Müll. Arg. - , Crowe (1994: 72)
- Rhizocarpon eupetraeum (Nyl.) Arnold - Thomson (1997: 533)
- Rhizocarpon geminatum Körb. - Thomson (1997: 537)
- Rhizocarpon geographicum (L.) DC. - Fahselt (1976: 1743), Crowe (1994: 72), Thomson (1997: 538)
- Rhizocarpon grande (Flörke ex Flot.) Arnold - , Crowe (1994: 72), Thomson (1997: 539)
- Rhizocarpon hochstetteri (Körb.) Vain. - Thomson (1997: 540)
- Rhizocarpon jemtlandicum Malme - Crowe (1994: 72), Thomson (1997: 542)
- Rhizocarpon lecanorinum Anders - Crowe (1994: 72)
- Rhizocarpon macrosporum Räsänen - , Crowe (1994: 72), Thomson (1997: 543)
- Rhizocarpon obscuratum auct. - Crowe (1994: 73), Thomson (1997: 544)
- Rhizocarpon oederi (Weber) Körb. - Crowe (1994: 73)
- Rhizocarpon plicatile (Leight.) A. L. Sm. - Crowe (1994: 73)
- Rhizocarpon polycarpum (Hepp) Th. Fr. - Crowe (1994: 73), Thomson (1997: 546)
- Rhizocarpon sphaerosporum Räsänen - Crowe (1994: 73)
- Rhizocarpon subgeminatum Eitner - Crowe (1994: 73)
- Rhizoplaca chrysoleuca (Sm.) Zopf - Ahti (1964: 18 as Lecanora rubina), Crowe (1994: 73), Thomson (1997: 554)
- Rhizoplaca melanophthalma (Ramond) Leuck. & Poelt - Crowe (1994: 73), Thomson (1997: 555)
- Rinodina archaea (Ach.) Vain. - Crowe (1994: 73), Thomson (1997: 560)
- Rinodina austroborealis Sheard - Sheard (2010: 47 Type in CANL)
- Rinodina metaboliza Vain. - Thomson (1997: 566)
- Rinodina turfacea (Wahlenb.) Körb. - Crowe (1994: 73), Thomson (1997: 571)
- Romjularia lurida (Ach.) Timdal - Crowe (1994: 69 as Lecidea lurida), Thomson (1997: 509 as Psora lurida)
- Rufoplaca arenaria (Pers.) Arup, Søchting & Frödén - Crowe (1994: 65 as Caloplaca arenaria), Thomson (1997: 152 as Caloplaca arenaria)
- Rusavskia elegans (Link) S. Y. Kondr. & Kärnefelt - Thomson (1984: 484 as Xanthoria elegans), Crowe (1994: 74 as Xanthoria elegans)
- Rusavskia sorediata (Vain.) S. Y. Kondr. & Kärnefelt - Thomson (1984: 487), Crowe (1994: 74 as Xanthoria sorediata)
- Sarcogyne clavus (DC.) Kremp. - Thomson (1997: 577)
- Sarcogyne regularis Körb. - Crowe (1994: 73), Thomson (1997: 579)
- Schaereria fuscocinerea (Nyl.) Clauzade & Cl. Roux - Thomson (1997: 584 as Schaereria tenebrosa), Crowe (1994: 73)
- Sclerophora pallida (Pers.) Y. J. Yao & Spooner - Crowe (1994: 73 as Sclerophora nivea)
- Scoliciosporum chlorococcum (Graewe ex Stenh.) Vezda - Crowe (1994: 73)
- Scoliciosporum umbrinum (Ach.) Arnold - Thomson (1997: 585)
- Scytinium californicum (Tuck.) Otálora, P. M. Jørg. & Wedin - Crowe (1994: 69 as Leptogium californicum)
- Scytinium fragrans (Sm.) Ach. - Crowe (1994: 67 as Collema fragrans)
- Scytinium gelatinosum (With.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 263 as Leptogium sinuatum), Thomson (1984: 264 as Leptogium tenuisimum)
- Scytinium lichenoides (L.) Otálora, P. M. Jørg. & Wedin - Ahti (1964: 18 as Leptogium lichenoides), Thomson (1984: 257 as Leptogium lichenoides), Crowe (1994: 69 as Leptogium lichenoides)
- Scytinium subtile (Schrad.) Otálora, P. M. Jørg. & Wedin - Thomson (1984: 259 as Leptogium minutissimum)
- Scytinium teretiusculum (Wallr.) Otálora, P. M. Jørg. & Wedin - Crowe (1994: 69 as Leptogium teretiusculum)
- Solitaria chrysophthalma (Degel.) Arup, Søchting & Frödén - Crowe (1994: 65 as Caloplaca chrysophthalma)
- Solorina saccata (L.) Ach. - Thomson (1984: 390), Crowe (1994: 73)
- Solorina spongiosa (Ach.) Anzi - Thomson (1984: 391), Crowe (1994: 73)
- Sphaerophorus globosus (Huds.) Vain. - Thomson (1984: 394)
- Spilonema paradoxum Bornet - Crowe (1994: 73)
- Spilonema revertens Nyl. - Ahti (1964: 18), Crowe (1994: 73)
- Squamulea subsoluta (Nyl.) Arup, Søchting & Frödén - Brodo et al. (2013: 209 as Caloplaca subsoluta)
- Staurothele areolata (Ach.) Lettau - Crowe (1994: 73), Thomson (1997: 592)
- Staurothele drummondii (Tuck.) Tuck. - Crowe (1994: 73), Thomson (1997: 595)
- Staurothele fissa (Tayler) Zwackh - Crowe (1994: 73), Thomson (1997: 596)
- Stereocaulon alpinum Laurer - Thomson (1984: 400), Crowe (1994: 73)
- Stereocaulon botryosum Ach. em. Frey - Thomson (1984: 405), Crowe (1994: 73)
- Stereocaulon condensatum Hoffm. - Thomson (1984: 407), Crowe (1994: 73)
- Stereocaulon dactylophyllum Flörke - Thomson (1984: 410), Crowe (1994: 73)
- Stereocaulon glaucescens Tuck. - Crowe (1994: 73)
- Stereocaulon grande (H. Magn.) H. Magn. - Thomson (1984: 413), Crowe (1994: 73)
- Stereocaulon paschale (L.) Hoffm. - Thomson (1984: 418), Crowe (1994: 73)
- Stereocaulon pileatum Ach. - Thomson (1984: 419), Crowe (1994: 73)
- Stereocaulon rivulorum H. Magn. - Crowe (1994: 73)
- Stereocaulon saxatile H. Magn. - Thomson (1984: 423), Crowe (1994: 73)
- Stereocaulon spathuliferum Vain. - Thomson (1984: 425)
- Stereocaulon subcoralloides (Nyl.) Nyl. - Crowe (1994: 73)
- Stereocaulon tomentosum Fr. - Thomson (1984: 428), Crowe (1994: 73)
- Sticta canariensis (Bory) Bory ex Delise - Brodo (1994: 76 cyanobacterial morph "Sticta dufourii"), Crowe (1994: 73)
- Strangospora moriformis (Ach.) Stein - Thomson (1997: 599)
- Strigula jamesii (Swinscow) R. C. Harris - Harris (1973: 10 erroneously as Arthopyrenia affinis)
- Synalissa symphorea (Ach.) Nyl. - Crowe (1994: 73)
- Tephromela atra (Huds.) Hafellner - Crowe (1994: 73), Thomson (1997: 633)
- Thalloidima sedifolium (Scop.) Kistenich, Timdal, Bendiksby & S. Ekman - Thomson (1997: 614 as Toninia coeruleonigricans)
- Thamnolia subuliformis (Ehrh.) W. L. Culb. - Thomson (1984: 438)
- Thelidium pyrenophorum (Ach.) Körb. - Crowe (1994: 73), Thomson (1997: 607)
- Thelocarpon epibolum Nyl. - Thomson (1997: 609)
- Toninia philippea (Mont.) Timdal - Thomson (1997: 199 as Catillaria philippea)
- Toninia populorum (A. Massal.) Kistenich, Timdal, Bendiksby & S. Ekman - Brodo et al. (2013: 206 as Arthrosporum populorum)
- Toniniopsis aromatica (Sm.) Kistenich, Timdal, Bendiksby & S. Ekman - Crowe (1994: 73 as Toninia aromatica), Thomson (1997: 613 as Toninia aromatica)
- Trapelia placodioides Coppins & P. James - Crowe (1994: 74)
- Trapeliopsis flexuosa (Fr.) Coppins & P. James - Thomson (1997: 623)
- Trapeliopsis granulosa (Hoffm.) Lumbsch - Crowe (1994: 74), Thomson (1997: 624)
- Trapeliopsis viridescens (Schrad.) Coppins & P. James - Crowe (1994: 74)
- Tremolecia atrata (Ach.) Hertel - Thomson (1997: 627)
- Tryblidaria nivalis (Bagl. & Carestia) Rehm - Thomson (1997: 134 as Buellia nivalis)
- Tuckermannopsis americana W. L. Culb. & C. F. Culb. - Thomson (1984: 81 as Cetraria halei), Crowe (1994: 74)
- Tuckermannopsis ciliaris (Ach.) Gyeln. - Ahti (1964: 18 as Cetraria ciliaris), Crowe (1994: 74)
- Tuckermannopsis orbata (Nyl.) Lai - Crowe (1994: 74)
- Tuckermannopsis sepincola (Ehrh.) Ach. - Ahti (1964: 19 as Cetraria sepincola), Thomson (1984: 94 as Cetraria sepincola), Crowe (1994: 74)
- Umbilicaria arctica (Ach.) Nyl. - Thomson (1984: 444), Crowe (1994: 74)
- Umbilicaria deusta (L.) Baumg. - Thomson (1984: 449), Crowe (1994: 74)
- Umbilicaria hirsuta (Sw.) Ach. - Thomson (1984: 452)
- Umbilicaria hyperborea (Ach.) Hoffm. - Thomson (1984: 453), Crowe (1994: 74)
- Umbilicaria mammulata (Ach.) Tuck. - Crowe (1994: 74)
- Umbilicaria muehlenbergii (Ach.) Tuck. - Thomson (1984: 26 as Actinogyra muehlenbergii), Crowe (1994: 74)
- Umbilicaria polyphylla (L.) Baumg. - Thomson (1984: 457)
- Umbilicaria polyrrhiza (L.) Fr. - Thomson (1984: 27 as Actinogyra polyrrhiza)
- Umbilicaria proboscidea (L.) Schrad. - Thomson (1984: 458)
- Umbilicaria torrefacta (Lightf.) Schrad. - Thomson (1984: 459)
- Umbilicaria vellea (L.) Ach. - Thomson (1984: 460), Crowe (1994: 74)
- Usnea cavernosa Tuck. - Thomson (1984: 463), Crowe (1994: 74)
- Usnea dasypoga (Ach.) Röhl. - Thomson (1984: 465)
- Usnea filipendula Stirton - Crowe (1994: 74)
- Usnea glabrata (Ach.) Vain. - Thomson (1984: 466), Crowe (1994: 74)
- Usnea hirta (L.) F. H. Wigg. - Thomson (1984: 466), Crowe (1994: 74), Crowe (1994: 74 as Usnea variolosa)
- Usnea lapponica Vain. - Crowe (1994: 74)
- Usnea longissima Ach. - Crowe (1994: 74)
- Usnea scabrata Nyl. - Crowe (1994: 74)
- Usnea subfloridana Stirt. - Thomson (1984: 469), Crowe (1994: 74)
- Usnea subfusca Stirton - Crowe (1994: 74)
- Usnea substerilis Mot. - Thomson (1984: 470)
- Usnea trichodea Ach. - Crowe (1994: 74)
- Usnocetraria oakesiana (Tuck.) M. J. Lai & C. J. Wei - Ahti (1964: 19 as Cetraria oakesiana), Crowe (1994: 74 as Tuckermannopsis oakesiana)
- Vahliella leucophaea (Vahl) P. M. Jørg. - Ahti (1964: 18 as Parmeliella microphylla), Crowe (1994: 70 as Pannaria leucophaea)
- Varicellaria velata (Turner) Nyl. - Crowe (1994: 71 as Pertusaria velata)
- Verrucaria aethiobola Wahlenb. - Thomson (1997: 632)
- Verrucaria amylacea A. Massal. - Yarranton & Green (1966: 450)
- Verrucaria margacea (Wahlenb. in Ach.) Wahlenb. - Thomson (1997: 639)
- Verrucaria muralis Ach. - Thomson (1997: 641)
- Verrucaria nigrescens Pers. - Yarranton & Green (1966: 450), Crowe (1994: 74), Thomson (1997: 642)
- Verrucaria rupestris Schrad. - Thomson (1997: 643)
- Vulpicida pinastri (Scop.) J.-E. Mattsson - Ahti (1964: 19), Thomson (1984: 93 as Cetraria pinastri), Crowe (1994: 74)
- Xanthocarpia crenulatella (Nyl.) Frödén, Arup & Søchting - Brodo et al. (2013: 209 as Caloplaca crenulatella)
- Xanthocarpia feracissima (H. Magn.) Frödén, Arup & Søchting - Brodo et al. (2013: 209 as Caloplaca feracissima)
- Xanthoparmelia conspersa (Ach.) Hale - Ahti (1964: 20 as Parmelia conspersa), Crowe (1994: 74)
- Xanthoparmelia cumberlandia (Gyeln.) Hale - Crowe (1994: 74)
- Xanthoparmelia stenophylla (Ach.) Ahti & D. Hawksw. - Crowe (1994: 74 as Xanthoparmelia somloensis)
- Xanthoparmelia viriduloumbrina (Gyeln.) Lendemer - Thomson (1984: 480 erroneously as Xanthoparmelia taractica)
- Xanthomendoza fallax (Hepp) Söchting, Kärnefelt & S. Kondr. - Thomson (1984: 486 as Xanthoria fallax), Crowe (1994: 74 as Xanthoria fallax)
- Xanthomendoza hasseana (Räsänen) Söchting, Kärnefelt & S. Kondr. - Brodo et al. (2007: 306)
- Xanthoria parietina (L.) Th. Fr. - Brodo et al. (2007: 306)
- Xylographa abietina (Pers.) Zahlbr. - Crowe (1994: 74), Thomson (1997: 646)
- Xylopsora friesii (Ach. in Lilj.) Bendiksby & Timdal - Thomson (1997: 248 as Hypocenomyce friesii)