Checklist of lichens of Colorado (USA)
Version 31 December 2018
- Acarospora americana H. Magn. - St.Clair et al. (1998: 312)
- Acarospora badiofusca (Nyl.) Th. Fr. - Magnusson (1934: 137 as Sarcogyne athroocarpa Type), Magnusson (1956: 16 as Acarospora boulderensis Type in Uppsala, Sweden, UPS), Magnusson (1956: 17 as Acarospora asperata Type in Uppsala, Sweden, UPS), Anderson (1962: 243), Shushan & Anderson (1969: 454), Shushan & Anderson (1969: 473 as Sarcogyne athroocarpa)
- Acarospora coloradiana H. Magn. - Magnusson (1929: 273 Type), Magnusson (1955: xxx), Shushan & Anderson (1969: 454)
- Acarospora elevata H. Magn. - Henson et al. (2013: 21)
- Acarospora fuscata (Schrad.) Arnold - Anderson (1962: 244), Shushan & Anderson (1969: 454), Shrestha & St.Clair (2009: 107)
- Acarospora fuscescens H. Magn. - Knudsen (2008: 83)
- Acarospora glaucocarpa (Ach.) Körb. - Shrestha & St.Clair (2009: 107)
- Acarospora janae K. Knudsen - Magnusson (1929: 283 erroneously as Acarospora gallica), Shushan & Anderson (1969: 454 erroneously as Acarospora gallica)
- Acarospora molybdina (Wahlenb. ex Ach.) Trev. - Shushan & Anderson (1969: 454)
- Acarospora obnubila H. Magn. - Magnusson (1956: 17 as Acarospora asperata Type in Upsala, Sweden UPS)
- Acarospora schleicheri (Ach.) A. Massal. - Magnusson (1956: 12 as Acarospora ocellata Type), Anderson (1962: 244), Shushan & Anderson (1969: 454), Shrestha & St.Clair (2009: 107)
- Acarospora sinopica (Wahlenb. ex Ach.) Körb. - Anderson & Carmer (1974: 216)
- Acarospora socialis H. Magn. - Magnusson (1956: 14 as Acarospora intercedens Type)
- Acarospora stapfiana (Müll. Arg.) Hue - Shrestha & St.Clair (2009: 107 First record)
- Acarospora strigata (Nyl.) Jatta - Shrestha & St.Clair (2009: 107 First record)
- Acarospora veronensis A. Massal. - Shrestha & St.Clair (2009: 107)
- Adelolecia kolaensis (Nyl.) Hertel & Rambold - Shushan & Anderson (1969: 463 as Lecidea conferenda)
- Agonimia tristicula (Nyl.) Zahlbr. - Anderson (1962: 256 as Polyblastia tristicula), Shushan & Anderson (1969: 471 as Polyblastia tristicula)
- Alectoria nigricans (Ach.) Nyl. - Shushan & Anderson (1969: 455)
- Allocetraria madreporiformis (Ach.) Kärnefelt & A. Thell - Shushan & Anderson (1969: 460 as Dactylina madreporiformis), St.Clair et al. (1998: 312 as Dactylina madreporiformis), Shrestha & St.Clair (2009: 107)
- Amandinea punctata (Hoffm.) Coppins & Scheid. - Anderson (1962: 245 as Buellia punctata), Shushan & Anderson (1969: 456 as Buellia punctata), Carmer (1975: 51 as Buellia punctata), Shrestha & St.Clair (2009: 107)
- Anaptychia bryorum Poelt - Poelt (1971: 155)
- Anaptychia elbursiana (Szat.) Poelt - Steiner & Poelt (1986: 221)
- Anaptychia ulothricoides (Vain.) Vain. - Steiner & Poelt (1986: 221), Shrestha & St.Clair (2009: 107)
- Apatoplaca oblongula (H. Magn.) Poelt & Hafellner - Kilias (1985: 185 as Apatoplaca oblongula)
- Arthonia glebosa Tuck. - Shushan & Anderson (1969: 455)
- Arthonia lapidicola (Tayl.) Branth & Rostr. - Anderson & Carmer (1974: 216)
- Arthrorhaphis alpina (Schaer.) R. Sant. - Shushan & Anderson (1969: 455 as Bacidia alpina), Shrestha & St.Clair (2009: 107)
- Aspicilia cinerea (L.) Körb. - Anderson (1962: 249 as Lecanora cinerea), Shushan & Anderson (1969: 462 as Lecanora cinerea), Shrestha & St.Clair (2009: 107), Henson et al. (2013: 21)
- Aspicilia quartzitica W. A. Weber - Weber (1971: 183 Type), Shrestha & St.Clair (2009: 108), Henson et al. (2013: 21)
- Athallia holocarpa (Hoffm.) Arup, Frödén & Søchting - Shushan & Anderson (1969: 456 as Caloplaca holocarpa), Carmer (1975: 51 as Caloplaca holocarpa), Shrestha & St.Clair (2009: 108 as Caloplaca holocarpa)
- Bacidia vermifera (Nyl.) Th. Fr. - Carmer (1975: 51)
- Bacidina inundata (Fr.) Körb. - Anderson & Carmer (1974: 216 as Bacidia inundata)
- Baeomyces rufus (Huds.) Rebent. - Shushan & Anderson (1969: 455)
- Bellemerea alpina (Sommerf.) Clauzade & Cl. Roux - Shushan & Anderson (1969: 461 as Lecanora alpina), Shrestha & St.Clair (2009: 108), Henson et al. (2013: 21)
- Bellemerea cinereorufescens (Ach.) Clauzade & Cl. Roux - Anderson & Carmer (1974: 216 as Aspicilia cinereorufescens), Shrestha & St.Clair (2009: 108)
- Biatora vernalis (L.) Fr. - Shushan & Anderson (1969: 465 as Lecidea vernalis), Shrestha & St.Clair (2009: 108)
- Biatorella hemisphaerica Anzi - Shushan & Anderson (1969: 455 erroneously as Biatorella fossarum)
- Bilimbia lobulata (Sommerf.) Hafellner & Coppins - Shushan & Anderson (1969: 475 as Toninia lobulata)
- Bilimbia sabuletorum (Schreb.) Arnold - Shushan & Anderson (1969: 455 as Bacidia sabuletorum)
- Blastenia ammiospila (Wahlenb.) Arup, Søchting & Frödén - Shushan & Anderson (1969: 456 as Caloplaca cinnamomea), St.Clair et al. (1998: 312 as Caloplaca ammiospila), Shrestha & St.Clair (2009: 108 as Caloplaca ammiospila)
- Blastenia furfuracea (H. Magn.) Arup, Søchting & Frödén - Wetmore (2004: 289 as Caloplaca furfuracea)
- Blennothallia crispa (Hudson) Otálora, P. M. Jørg. & Wedin - Shushan & Anderson (1969: 459 as Collema crispum), Shrestha & St.Clair (2009: 110 as Collema crispum)
- Brianaria tuberculata (Sommerf.) R. A. Anderson - Anderson (1974: 44 as Micarea tuberculata First record for North America)
- Brodoa oroarctica (Krog) Goward - Shushan & Anderson (1969: 461 erroneously as Hypogymnia intestiniformis), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 108), Henson et al. (2013: 21)
- Brownliella cinnabarina (Ach.) S. Y. Kondr., Kärnefelt, A. Thell, Elix, Jung Kim, A. S. Kondr. & Hur - Anderson (1962: 245 as Caloplaca cinnabarina), Shushan & Anderson (1969: 456 as Caloplaca cinnabarina), St.Clair et al. (1998: 312 as Caloplaca cinnabarina), Shrestha & St.Clair (2009: 108 as Caloplaca cinnabarina)
- Bryobilimbia hypnorum (Lib.) Fryday, Printzen & S. Ekman - Shushan & Anderson (1969: 465 as Lecidea sanguineoatra), Shushan & Anderson (1969: 465 as Lecidea templetonii)
- Bryonora castanea (Hepp) Th. Fr. - Shushan & Anderson (1969: 462 as Lecanora castanea)
- Bryoplaca jungermanniae (Vahl) Søchting, Frödén & Arup - Shushan & Anderson (1969: 456 as Caloplaca jungermanniae), Shrestha & St.Clair (2009: 108 as Caloplaca jungermanniae)
- Bryoplaca sinapisperma (DC.) Søchting, Frödén & Arup - Shushan & Anderson (1969: 456 as Caloplaca sinapisperma)
- Bryoria chalybeiformis (L.) Brodo & D. Hawksw. - Shrestha & St.Clair (2009: 108)
- Bryoria fremontii (Tuck.) Brodo & D. Hawksw. - Shushan & Anderson (1969: 454 as Alectoria fremontii)
- Bryoria fuscescens (Gyeln.) Brodo & D. Hawksw. - Shrestha & St.Clair (2009: 108)
- Bryoria glabra (Motyka) Brodo & D. Hawksw. - Shushan & Anderson (1969: 455 as Alectoria glabra)
- Bryoria lanestris (Ach.) Brodo & D. Hawksw. - Shrestha & St.Clair (2009: 108)
- Bryoria tenuis (E. Dahl) Brodo & D. Hawksw. - Shushan & Anderson (1969: 455 as Alectoria tenuis)
- Bryoria trichodes (Michx.) Brodo & D. Hawksw. subsp. americana (Motyka) Brodo & D. Hawksw. - Shushan & Anderson (1969: 454 as Alectoria americana)
- Buellia aethalea (Ach.) Th. Fr. - Anderson & Carmer (1974: 217)
- Buellia badia (Fr.) A. Massal. - Anderson (1962: 245), Shushan & Anderson (1969: 455), Shrestha & St.Clair (2009: 108)
- Buellia dispersa A. Massal. - Tuckerman (1888: 89 as Buellia retrovertens Type), Anderson (1962: 245 as Buellia retrovertens), Shushan & Anderson (1969: 456 as Buellia retrovertens)
- Buellia elegans Poelt - Shrestha & St.Clair (2009: 108)
- Buellia erubescens Arnold - Shushan & Anderson (1969: 456 as Buellia zahlbruckneri), Shrestha & St.Clair (2009: 108)
- Buellia jugorum (Arnold) Arnold - Anderson (1974: 42 First record for North America)
- Buellia lacteoidea B. de Lesd. - Anderson & Carmer (1974: 217)
- Buellia spuria (Schaer.) Anzi - Anderson (1962: 245), Shushan & Anderson (1969: 456)
- Buellia vilis Th. Fr. - Anderson (1962: 245), Shushan & Anderson (1969: 456)
- Calogaya decipiens (Arnold) Arup, Frödén & Søchting - Anderson (1962: 245 as Caloplaca decipiens), Shushan & Anderson (1969: 456 as Caloplaca decipiens), Shrestha & St.Clair (2009: 108 as Caloplaca decipiens)
- Calogaya saxicola (Hoffm.) Vondrák - Shrestha & St.Clair (2009: 109 as Caloplaca saxicola)
- Caloplaca adnexa Vezda - Henson et al. (2013: 21)
- Caloplaca cerina (Hedw.) Th. Fr. - Anderson (1962: 247 as Caloplaca stillicidiorum), Shushan & Anderson (1969: 456), Shushan & Anderson (1969: 456 as Caloplaca stillicidiorum), Carmer (1975: 51), Shrestha & St.Clair (2009: 108)
- Caloplaca diphyodes (Nyl.) Jatta - Anderson (1967: 339), Shushan & Anderson (1969: 456)
- Caloplaca epithallina Lynge - Anderson (1962: 246), Shushan & Anderson (1969: 456), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 108), Henson et al. (2013: 21)
- Caloplaca eugyra (Tuck.) Zahlbr. - Shushan & Anderson (1969: 456)
- Caloplaca fraudans (Th. Fr.) H. Olivier - Anderson (1962: 246), Shushan & Anderson (1969: 456), Shrestha & St.Clair (2009: 108)
- Caloplaca sideritis (Tuck.) Zahlbr. - Anderson (1962: 247), Shushan & Anderson (1969: 456), Shrestha & St.Clair (2009: 109)
- Caloplaca sorocarpa (Vain.) Zahlbr. - Carmer (1975: 51)
- Calvitimela armeniaca (DC.) Hafellner - Shushan & Anderson (1969: 463 as Lecidea armeniaca), Shrestha & St.Clair (2009: 109), Henson et al. (2013: 21)
- Candelaria concolor (J. Dicks.) Stein - Anderson (1962: 247), Shushan & Anderson (1969: 457 as Candelariella concolor), Carmer (1975: 52)
- Candelariella aggregata M. Westb. - Westberg (2007: 393 Protologue) Type in Boulder, Colorado, USA COLO
- Candelariella antennaria Räsänen - Shrestha & St.Clair (2009: 109)
- Candelariella arctica (Körb.) R. Sant. - Shushan & Anderson (1969: 457)
- Candelariella aurella (Hoffm.) Zahlbr. - Shushan & Anderson (1969: 457), Carmer (1975: 52), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 109)
- Candelariella citrina Räsänen - Räsänen (1939: 137 as Candelariella terrigena Protologue), Shushan & Anderson (1969: 457 as Candelariella terrigena), Shrestha & St.Clair (2009: 109)
- Candelariella rosulans (Müll. Arg.) Zahlbr. - Müller Aargau (1892: 200 as Candelaria vitellina var. rosulans Protologue), Zahlbruckner (1928: 802), Shushan & Anderson (1969: 457), Shrestha & St.Clair (2009: 109), Henson et al. (2013: 21) Type in Geneva, Switzerland G
- Candelariella spraguei (Tuck.) Zahlbr. - Tuckerman (1882: 179 as Placodium spraguei Protologue), Anderson (1962: 247), Shushan & Anderson (1969: 457) Type
- Candelariella subdeflexa (Nyl.) Lettau - Shrestha & St.Clair (2009: 109)
- Candelariella vitellina (Ehr.) Müll. Arg. - Anderson (1962: 247), Shushan & Anderson (1969: 457), Carmer (1975: 52), Shrestha & St.Clair (2009: 109), Henson et al. (2013: 21)
- Candelariella xanthostigma (Pers. ex Ach.) Lettau - Anderson & Carmer (1974: 217), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 109)
- Carbonea vorticosa (Flörke) Hertel - Shushan & Anderson (1969: 465 as Lecidea vorticosa)
- Catapyrenium cinereum (Pers.) Körb. - Shushan & Anderson (1969: 460 as Dermatocarpon cinereum), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 109)
- Catolechia wahlenbergii (Ach.) Körb. - Anderson & Carmer (1974: 217 as Buellia wahlenbergii)
- Cetraria aculeata (Schreb.) Fr. - Shushan & Anderson (1969: 459 as Cornicularia aculeata), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 109)
- Cetraria ericetorum Opiz subsp. ericetorum - St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 109)
- Cetraria islandica (L.) Ach. subsp. islandica - Shushan & Anderson (1969: 457 as Cetraria ericetorum), Shushan & Anderson (1969: 457), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 109)
- Cetrariella commixta (Nyl.) A. Thell & Kärnefelt - Shushan & Anderson (1969: 457 as Cetraria commixta)
- Chaenotheca ferruginea (Turn. ex Sm.) Mig. - Anderson & Carmer (1974: 218), Anderson & Carmer (1974: 218 as Coniocybe furfuracea)
- Circinaria arida Owe-Larsson, A. Nordin & Tibell - St.Clair et al. (1998: 312 erroneously as Aspicilia desertorum), Shrestha & St.Clair (2009: 108 erroneously as Aspicilia desertorum), Henson et al. (2013: 21 erroneously as Aspicilia desertorum)
- Circinaria caesiocinerea (Nyl. ex Malbr.) A. Nordin, Savic & Tibell - Anderson (1962: 249 as Lecanora caesiocinerea), Shushan & Anderson (1969: 461 as Lecanora caesiocinerea), St.Clair et al. (1998: 312 as Aspicilia caesiocinerea), Shrestha & St.Clair (2009: 107 as Aspicilia caesiocinerea), Henson et al. (2013: 21 as Aspicilia caesiocinerea)
- Circinaria calcarea (L.) A. Nordin, Savic & Tibell - Anderson (1962: 249 as Lecanora calcarea), Shushan & Anderson (1969: 462 as Lecanora calcarea), Shrestha & St.Clair (2009: 107 as Aspicilia calcarea)
- Circinaria contorta (Hoffm.) A. Nordin, Savic & Tibell - Shrestha & St.Clair (2009: 108 as Aspicilia contorta)
- Circinaria hispida (Mereschk.) A. Nordin, Savic & Tibell - Thomson (1960: 249 as Agrestia cyphellata), Shushan & Anderson (1969: 454 as Agrestia cyphellata)
- Cladonia acuminata (Ach.) Norrlin var. acuminata Vain. - Shushan & Anderson (1969: 459 as Cladonia norrlinii)
- Cladonia arbuscula (Wallr.) Rabenh. subsp. beringiana Ahti - Shushan & Anderson (1969: 458)
- Cladonia bacilliformis (Nyl.) Sarnth. - Shushan & Anderson (1969: 458)
- Cladonia botrytes (K. G. Hagen) Willd. - Shushan & Anderson (1969: 458)
- Cladonia cariosa (Ach.) Spreng. - Shushan & Anderson (1969: 458), Shrestha & St.Clair (2009: 109)
- Cladonia carneola (Fr.) Fr. - Shushan & Anderson (1969: 458)
- Cladonia cenotea (Ach.) Schaer. - Shushan & Anderson (1969: 458)
- Cladonia chlorophaea (Flörke ex Sommerf.) Spreng. - Shushan & Anderson (1969: 458), Shrestha & St.Clair (2009: 109)
- Cladonia coccifera (L.) Willd. - Shushan & Anderson (1969: 458)
- Cladonia coniocraea (Flörke) Spreng. - Shushan & Anderson (1969: 458), Shrestha & St.Clair (2009: 109)
- Cladonia conista (Ach.) Robbins - Shushan & Anderson (1969: 458)
- Cladonia cornuta (L.) Hoffm. subsp. cornuta - Thomson (1967c: 52), Shushan & Anderson (1969: 458)
- Cladonia crispata (Ach.) Flot. var. crispata - Shushan & Anderson (1969: 458)
- Cladonia cyanipes (Sommerf.) Nyl. - Shushan & Anderson (1969: 458)
- Cladonia decorticata (Flörke) Spreng. - Shushan & Anderson (1969: 458)
- Cladonia deformis (L.) Hoffm. - Shushan & Anderson (1969: 458)
- Cladonia didyma (Fée) Vain. - Shushan & Anderson (1969: 458)
- Cladonia ecmocyna Leight. subsp. ecmocyna - Shushan & Anderson (1969: 458), Shrestha & St.Clair (2009: 109)
- Cladonia fimbriata (L.) Fr. - Shushan & Anderson (1969: 458), Shushan & Anderson (1969: 459 as Cladonia major), Shrestha & St.Clair (2009: 109)
- Cladonia furcata (Huds.) Schrad. - Shushan & Anderson (1969: 458)
- Cladonia gracilis (L.) Willd. - Shushan & Anderson (1969: 459)
- Cladonia macrophyllodes Nyl. - Shushan & Anderson (1969: 459), Shrestha & St.Clair (2009: 109)
- Cladonia mateocyatha Robbins - Shushan & Anderson (1969: 459)
- Cladonia mitis Sandst. - Shushan & Anderson (1969: 459)
- Cladonia multiformis G. Merr. - Shushan & Anderson (1969: 459)
- Cladonia norvegica Tønsberg & Holien - Shrestha & St.Clair (2009: 110 First record)
- Cladonia ochrochlora Flörke - Shushan & Anderson (1969: 459)
- Cladonia phyllophora Ehrh. ex Hoffm. - Shushan & Anderson (1969: 459)
- Cladonia pleurota (Flörke) Schaer. - Shushan & Anderson (1969: 459)
- Cladonia pocillum (Ach.) O. J. Rich. - Shushan & Anderson (1969: 459), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 110)
- Cladonia pyxidata (L.) Hoffm. - Anderson (1962: 247), Shushan & Anderson (1969: 459), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 110)
- Cladonia rei Schaer. - Shushan & Anderson (1969: 459 as Cladonia nemoxyna)
- Cladonia squamosa (Scop.) Hoffm. var. squamosa - Shushan & Anderson (1969: 459)
- Cladonia stricta (Nyl.) Nyl. - Shrestha & St.Clair (2009: 110)
- Cladonia subcariosa Nyl. - Shushan & Anderson (1969: 459 as Cladonia polycarpoides)
- Cladonia subulata (L.) Weber ex F. H. Wigg. - Shushan & Anderson (1969: 459)
- Cladonia sulphurina (Michx.) Fr. - Shushan & Anderson (1969: 458 as Cladonia gonecha), Shrestha & St.Clair (2009: 110)
- Cladonia symphycarpa (Ach.) Fr. - Shushan & Anderson (1969: 459)
- Cladonia verticillata (Hoffm.) Schaer. - Shushan & Anderson (1969: 459)
- Clauzadeana macula (Taylor) Coppins & Rambold - Anderson (1962: 249 as Lecanora morioides), Shushan & Anderson (1969: 462 as Lecanora morioides)
- Coenogonium pineti (Schrad. ex Ach.) Lücking & Lumbsch - Anderson & Carmer (1974: 218 as Dimerella diluta)
- Collema furfuraceum (Schaer.) Du Rietz - Anderson (1962: 247), Shushan & Anderson (1969: 459), Carmer (1975: 52), Shrestha & St.Clair (2009: 110)
- Collema glebulentum (Nyl. ex Cromb.) Degel. - Shrestha & St.Clair (2009: 110)
- Collema subflaccidum Degel. - Shrestha & St.Clair (2009: 110 First record)
- Collema texanum Tuck. - Shushan & Anderson (1969: 459 as Collema nylanderianum)
- Cyphelium inquinans (Sm.) Trevis. - Shushan & Anderson (1969: 460)
- Cyphelium lucidum (Rabenh.) Th. Fr. - Anderson & Carmer (1974: 218)
- Cyphelium notarisii (Tul.) Blomb. & Forssell - Shushan & Anderson (1969: 460)
- Cyphelium tigillare (Ach.) Ach. - Shushan & Anderson (1969: 460), Shrestha & St.Clair (2009: 110)
- Cystocoleus ebeneus (Dillwyn) Thwaites - Anderson (1967: 340), Shushan & Anderson (1969: 460), Shrestha & St.Clair (2009: 110)
- Dermatocarpon americanum Vain. - Heiðmarsson (2003: 466)
- Dermatocarpon intestiniforme (Körb.) Hasse - Shushan & Anderson (1969: 460), Shrestha & St.Clair (2009: 110)
- Dermatocarpon lorenzianum Anders - St.Clair et al. (1998: 312 First record), Shrestha & St.Clair (2009: 110)
- Dermatocarpon luridum (Dill. ex With.) J. R. Laundon - Shushan & Anderson (1969: 460 as Dermatocarpon fluviatile)
- Dermatocarpon meiophyllizum Vain. - Glavich & Geiser (2004: 139)
- Dermatocarpon miniatum (L.) W. Mann - Anderson (1962: 248), Shushan & Anderson (1969: 460), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 110), Henson et al. (2013: 21)
- Dermatocarpon moulinsii (Mont.) Zahlbr. - Anderson (1962: 248), Shushan & Anderson (1969: 460), Shrestha & St.Clair (2009: 110), Henson et al. (2013: 21)
- Dermatocarpon reticulatum H. Magn. - Anderson (1962: 248), Shushan & Anderson (1969: 460), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 110), Henson et al. (2013: 21)
- Dimelaena oreina (Ach.) Norman - Anderson (1962: 257 as Rinodina oreina), Shushan & Anderson (1969: 473 as Rinodina novomexicana), Shushan & Anderson (1969: 473 as Rinodina oreina), Shrestha & St.Clair (2009: 110), Henson et al. (2013: 21)
- Diploschistes actinostomus (Ach.) Zahlbr. - Shrestha & St.Clair (2009: 110)
- Diploschistes arabiensis Lumbsch - Lumbsch (1993: 228)
- Diploschistes muscorum (Scop.) R. Sant. subsp. muscorum - Shushan & Anderson (1969: 460 as Diploschistes canadensis), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 110)
- Diploschistes scruposus (Schreb.) Norman - Anderson (1962: 248), Shushan & Anderson (1969: 460), Shrestha & St.Clair (2009: 110), Henson et al. (2013: 21)
- Diplotomma alboatrum (Hoffm.) Flot. - Anderson (1962: 245 as Buellia alboatra), Shushan & Anderson (1969: 455 as Buellia alboatra), Shrestha & St.Clair (2009: 110)
- Enchylium coccophorum (Tuck.) Otálora, P. M. Jørg. & Wedin - Shrestha & St.Clair (2009: 110 as Collema coccophorum)
- Enchylium tenax (Sw.) Gray, Nat. Arr. Brit. Pl. (London) 1: 397 (1821) - Anderson (1962: 247 as Collema tenax), Shushan & Anderson (1969: 459 as Collema tenax), Shrestha & St.Clair (2009: 110 as Collema tenax)
- Endocarpon pulvinatum Th. Fr. - Shrestha & St.Clair (2009: 111)
- Endocarpon pusillum Hedw. - Anderson (1962: 248), Shushan & Anderson (1969: 460)
- Ephebe lanata (L.) Vain. - Shushan & Anderson (1969: 460)
- Ephebe ocellata Henssen - Shushan & Anderson (1969: 460)
- Euopsis granatina (Sommerf.) Nyl. - Anderson & Carmer (1974: 219 as Lecanora granatina)
- Evernia divaricata (L.) Ach. - Shushan & Anderson (1969: 460), Shrestha & St.Clair (2009: 111)
- Evernia perfragilis Llano - Shushan & Anderson (1969: 460)
- Farnoldia micropsis (A. Massal.) Hertel - Anderson & Carmer (1974: 220 as Lecidea rhaetica)
- Flavocetraria cucullata (Bellard) Kärnefelt & A. Thell - Shushan & Anderson (1969: 457 as Cetraria cucullata)
- Flavocetraria nivalis (L.) Kärnefelt & A. Thell - Shushan & Anderson (1969: 458 as Cetraria nivalis), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 111)
- Flavoparmelia caperata (L.) Hale - Anderson (1962: 254 as Parmelia caperata), Shushan & Anderson (1969: 467 as Parmelia caperata), Shrestha & St.Clair (2009: 111), Henson et al. (2013: 21)
- Flavoplaca citrina (Hoffm.) Arup, Frödén & Søchting - Shushan & Anderson (1969: 456 as Caloplaca citrina)
- Flavopunctelia darrowii (J. W. Thomson) Hale - Shrestha & St.Clair (2009: 111 First record)
- Flavopunctelia flaventior (Stirt.) Hale - Anderson (1962: 254 as Parmelia flaventior), Shushan & Anderson (1969: 467 as Parmelia flaventior), Shrestha & St.Clair (2009: 111)
- Flavopunctelia praesignis (Nyl.) Hale - Shrestha & St.Clair (2009: 111 First record)
- Flavopunctelia soredica (Nyl.) Hale - Anderson (1962: 255 as Parmelia soredica), Shushan & Anderson (1969: 468 as Parmelia ulophyllodes), Carmer (1975: 53 as Parmelia ulophyllodes), Shrestha & St.Clair (2009: 111)
- Fuscopannaria leucosticta (Tuck. ex E. Michener) P. M. Jørg. - Shrestha & St.Clair (2009: 111 First record)
- Fuscopannaria praetermissa (Nyl.) P. M. Jørg. - Shushan & Anderson (1969: 468 as Parmeliella praetermissa)
- Glypholecia scabra (Pers.) Müll. Arg. - Shushan & Anderson (1969: 461), Shrestha & St.Clair (2009: 111)
- Gyalecta erythrozona Lettau - Anderson (1974: 43)
- Gyalecta foveolaris (Ach.) Schaer. - Shushan & Anderson (1969: 461)
- Gyalolechia arizonica (H. Magn.) Søchting, Frödén & Arup - Shrestha & St.Clair (2009: 108 as Caloplaca arizonica)
- Gyalolechia bracteata (Hoffm.) Jatta subsp. bracteata - Shushan & Anderson (1969: 456 as Caloplaca bracteata)
- Gyalolechia desertorum (Tomin) Søchting, Frödén & Arup - Shrestha & St.Clair (2009: 111 as Fulgensia desertorum)
- Gyalolechia flavovirescens (Wulfen) Søchting, Frödén & Arup - Anderson (1962: 246 as Caloplaca flavovirescens), Shushan & Anderson (1969: 456 as Caloplaca aurantiaca), Shushan & Anderson (1969: 456 as Caloplaca flavovirescens), Shrestha & St.Clair (2009: 108 as Caloplaca flavovirescens)
- Gyalolechia xanthostigmoidea (Räsänen) Søchting, Frödén & Arup - Anderson (1974: 42 as Caloplaca bryochrysion First record for North America)
- Haematomma porphyrium (Pers.) Zopf - Shushan & Anderson (1969: 461)
- Heppia lutosa (Ach.) Nyl. - Shushan & Anderson (1969: 461), Shrestha & St.Clair (2009: 111)
- Heterodermia diademata (Taylor) D. D. Awasthi - Shrestha & St.Clair (2009: 111 First record)
- Heterodermia speciosa (Wulfen) Trevis. - Shushan & Anderson (1969: 455 as Anaptychia pseudospeciosa), Shrestha & St.Clair (2009: 111 First record)
- Hyperphyscia syncolla (Tuck. ex Nyl.) Kalb - Carmer (1975: 54 as Physciopsis syncolla)
- Hypocenomyce scalaris (Ach.) M. Choisy - Shushan & Anderson (1969: 465 as Lecidea scalaris)
- Hypogymnia austerodes (Nyl.) Räsänen - Shushan & Anderson (1969: 461), Shrestha & St.Clair (2009: 111)
- Hypogymnia bitteri (Lynge) Ahti - Shushan & Anderson (1969: 461), Shrestha & St.Clair (2009: 111)
- Hypogymnia physodes (L.) Nyl. - Shushan & Anderson (1969: 461), Shrestha & St.Clair (2009: 111)
- Hypogymnia subobscura (Vain.) Poelt - Shushan & Anderson (1969: 461)
- Hypogymnia tubulosa (Schaer.) Hav. - Anderson & Carmer (1974: 218)
- Hypotrachyna minarum (Vain.) Krog & Swinscow - Anderson & Carmer (1974: 220 as Parmelia dissecta), Shrestha & St.Clair (2009: 114 as Parmelinopsis minarum)
- Icmadophila ericetorum (L.) Zahlbr. - Shushan & Anderson (1969: 461)
- Imshaugia aleurites (Ach.) S. L. F. Mey. - Shushan & Anderson (1969: 468 as Parmeliopsis aleurites)
- Imshaugia placorodia (Ach.) S. L. F. Mey. - Shushan & Anderson (1969: 468 as Parmeliopsis placorodia), Shrestha & St.Clair (2009: 111)
- Involucropyrenium waltheri (Kremp.) Breuss - Anderson (1974: 43 as Dermatocarpon waltheri)
- Japewia tornoensis (Nyl.) Tønsberg - Anderson & Carmer (1974: 220 as Mycoblastus tornoensis)
- Lambiella insularis Nyl. -(Nyl.) T. Sprib. - Shushan & Anderson (1969: 464 as Lecidea insularis)
- Lasallia papulosa (Ach.) Llano - Anderson (1962: 248), Shushan & Anderson (1969: 475 as Umbilicaria papulosa), Shrestha & St.Clair (2009: 111)
- Lasallia pustulata (L.) Mérat - Shrestha & St.Clair (2009: 111)
- Lasallia pensylvanica (Hoffm.) Llano - Anderson (1962: 248), Shushan & Anderson (1969: 475 as Umbilicaria pensylvanica)
- Lathagrium cristatum (L.) Otálora, P. M. Jørg. & Wedin - Anderson (1962: 247 as Collema cristatum), Shushan & Anderson (1969: 459 as Collema cristatum), St.Clair et al. (1998: 312 as Collema cristatum), Shrestha & St.Clair (2009: 110 as Collema cristatum)
- Lathagrium fuscovirens (With.) Otálora, P.M. Jørg. & Wedin - Anderson (1962: 247 as Collema tunaeforme), Shushan & Anderson (1969: 459 as Collema tunaeforme), Shrestha & St.Clair (2009: 110 as Collema fuscovirens)
- Lathagrium undulatum (Flot.) Otálora, P. M. Jørg. & Wedin - Shrestha & St.Clair (2009: 110 as Collema undulatum var. granulosum First record)
- Lecania cyrtella (Ach.) Th. Fr. - Shushan & Anderson (1969: 461), Carmer (1975: 52 as Lecania cyrtellina)
- Lecania erysibe (Ach.) Mudd - Anderson (1962: 248), Shushan & Anderson (1969: 461)
- Lecania turicensis (Hepp) Müll. Arg. - Anderson (1962: 248 as Lecania albariella), Shushan & Anderson (1969: 461 as Lecania albariella)
- Lecanora argopholis (Ach.) Ach. - Anderson (1962: 249 as Lecanora oregana), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 111), Henson et al. (2013: 21)
- Lecanora bicincta Ramond - Shrestha & St.Clair (2009: 111 First record)
- Lecanora cadubriae (A. Massal.) Hedl. - Anderson & Carmer (1974: 219)
- Lecanora caesiorubella Ach. subsp. saximontana Imshaug & Brodo - Shushan & Anderson (1969: 461)
- Lecanora carpinea (L.) Vain. - Shushan & Anderson (1969: 462), Shrestha & St.Clair (2009: 111)
- Lecanora cenisia Ach. - Anderson (1962: 249), Shushan & Anderson (1969: 462), Shrestha & St.Clair (2009: 111), Henson et al. (2013: 21)
- Lecanora chlarotera Nyl. - Shushan & Anderson (1969: 462), Carmer (1975: 52), Shrestha & St.Clair (2009: 111)
- Lecanora densa (Sliwa & Wetmore) Printzen - Sliwa & Wetmore (2000: 486 as Lecanora varia subsp. densa Protologue), Printzen (2001: 394) Type
- Lecanora epibryon (Ach.) Ach. - Shushan & Anderson (1969: 462)
- Lecanora frustulosa (Dicks.) Ach. - Shushan & Anderson (1969: 462)
- Lecanora intricata (Ach.) Ach. - Shushan & Anderson (1969: 462)
- Lecanora impudens Degel. - Anderson & Carmer (1974: 219 as Lecanora chloropolia), Shrestha & St.Clair (2009: 112)
- Lecanora marginata (Schaer.) Hertel & Rambold - Shushan & Anderson (1969: 464 as Lecidea elata)
- Lecanora meridionalis H. Magn. - Shrestha & St.Clair (2009: 112)
- Lecanora mughicola Nyl. - Shrestha & St.Clair (2009: 112 First record)
- Lecanora phaedrophthalma Poelt - St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 112)
- Lecanora polytropa (Ehrh.) Rabenh. - Anderson (1962: 249), Shushan & Anderson (1969: 462), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 112), Henson et al. (2013: 21)
- Lecanora pringlei (Tuck.) Lamb. subsp. pringlei - Shushan & Anderson (1969: 462)
- Lecanora pringlei (Tuck.) Lamb. subsp. brandegei (Tuck.) Ryan - Tuckerman (xxx as Lecidea brandegei Type), Shushan & Anderson (1969: 463 as Lecidea brandegei)
- Lecanora rupicola (L.) Zahlbr. - Anderson (1962: 250), Shushan & Anderson (1969: 463), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 112), Henson et al. (2013: 21)
- Lecanora saligna (Schrad.) Zahlbr. - Shrestha & St.Clair (2009: 112)
- Lecanora subintricata (Nyl.) Th. Fr. - Carmer (1975: 52)
- Lecanora thallophila H. Magn. - Shrestha & St.Clair (2009: 112)
- Lecanora umbrosa Degel. - Anderson (1974: 44)
- Lecanora valesiaca (Müll. Arg.) Stizenb. - Shrestha & St.Clair (2009: 112)
- Lecanora varia (Hoffm.) Ach. - Shushan & Anderson (1969: 463 as Lecanora varia), Shrestha & St.Clair (2009: 112 as Lecanora varia)
- Lecidea atrobrunnea (DC.) Schaer. - Anderson (1962: 250), Shushan & Anderson (1969: 463), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 112), Henson et al. (2013: 21)
- Lecidea auriculata Th. Fr. subsp. auriculata - Anderson (1962: 250), Shushan & Anderson (1969: 463), Henson et al. (2013: 21)
- Lecidea cinerata Zahlbr. - Shushan & Anderson (1969: 463)
- Lecidea lapicida (Ach.) Ach. - Shushan & Anderson (1969: 464 as Lecidea lactea), Shushan & Anderson (1969: 464), Shrestha & St.Clair (2009: 112)
- Lecidea leucothallina Arnold - Shushan & Anderson (1969: 464), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 112)
- Lecidea lyngei Degel. - Shushan & Anderson (1969: 464)
- Lecidea plana Ach. - Anderson (1962: 250 as Lecidea latypea) Lecidea latypea ist in IF akzeptiert
- Lecidea populina Müll. Arg. ex Nyl. - Nylander (1900: 33 Protologue), Shushan & Anderson (1969: 464 as Lecidea populina), Anderson & Carmer (1974: 83 as Micarea populina), Carmer (1975: 53 as Micarea populina) Type
- Lecidea silacea (Hoffm.) Ach. - Anderson & Carmer (1974: 220)
- Lecidea syncarpa Zahlbr. - Shrestha & St.Clair (2009: 112)
- Lecidea tessellata (Ach.) Flörke var. tessellata - Anderson (1962: 251), Shushan & Anderson (1969: 465), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 112), Henson et al. (2013: 21)
- Lecidea turgidula Fr. - Shushan & Anderson (1969: 465)
- Lecidella bullata Körb. - Anderson (1974: 44)
- Lecidella carpathica Körb. - Shushan & Anderson (1969: 463 as Lecidea carpathica)
- Lecidella euphorea (Flörke) Kremp. - Shushan & Anderson (1969: 464 as Lecidea glomerulosa), Carmer (1975: 53 as Lecidella glomerulosa), Shrestha & St.Clair (2009: 112)
- Lecidella effugiens (Nilson) Knoph & Hertel - Anderson (1974: 45 as Lecidella incongruella First record for North America)
- Lecidella patavina (A. Massal.) Heufl. - Shushan & Anderson (1969: 463 as Lecidea alaiensis)
- Lecidella stigmatea (Ach.) Hertel & Leuckert - Anderson (1962: 252 as Lecidea vulgata), Shushan & Anderson (1969: 465 as Lecidea stigmatea), Carmer (1975: 53), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 112)
- Lecidella viridans (Flot.) Körb. - Anderson (1962: 251 as Lecidea viridans), Shrestha & St.Clair (2009: 112)
- Lecidella wulfenii (Ach.) Körb. - Anderson (1962: 250 as Lecidea heppii Protologue), Shushan & Anderson (1969: 464 as Lecidea heppii) Type
- Lecidoma demissum (Rutstr.) Gotth. Schneid. & Hertel - Shushan & Anderson (1969: 464 as Lecidea demissa), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 112)
- Lepraria albicans (Th. Fr.) Lendemer & B. P. Hodk. - Anderson (1962: 258 as Stereocaulon albicans), Shushan & Anderson (1969: 465 as Leprocaulon albicans)
- Lepraria diffusa (J. R. Laundon) Kukwa - Shrestha & St.Clair (2009: 112 First record)
- Lepraria gracilescens (Nyl.) Lendemer & B. P. Hodk. - Henson et al. (2013: 21 as Leprocaulon gracilescens)
- Lepraria membranacea (Dicks.) Vain. - Shushan & Anderson (1969: 465)
- Lepraria subalbicans (I. M. Lamb) Lendemer & B. P. Hodk. - Shushan & Anderson (1969: 474 as Stereocaulon subalbicans)
- Leprocaulon americanum Lendemer & B. P. Hodk. - Anderson (1962: 258 erroneously as Stereocaulon microscopicum)
- Leprocaulon quisquiliare (Leers) M. Choisy - Shushan & Anderson (1969: 465)
- Leproplaca cirrochroa (Ach.) Arup, Frödén & Søchting - Anderson & Carmer (1974: 217 as Caloplaca cirrochroa)
- Leptochidium albociliatum (Desm.) M. Choisy - Anderson & Carmer (1974: 220)
- Leptogium arsenei Sierk - Sierk (1964: 297 Protologue), Shushan & Anderson (1969: 465), Shrestha & St.Clair (2009: 113) Type
- Leptogium byssinum (Hoffm.) Zwackh ex Nyl. - Shushan & Anderson (1969: 465)
- Leptogium cyanescens (Ach.) Körb. - Shushan & Anderson (1969: 465)
- Leptogium denticulatum Nyl. - Shushan & Anderson (1969: 465), Shrestha & St.Clair (2009: 113)
- Leptogium hirsutum Sierk - Shushan & Anderson (1969: 465), Shrestha & St.Clair (2009: 113)
- Leptogium pseudofurfuraceum P. M. Jørg. & A. K. Wallace - Shushan & Anderson (1969: 465 erroneously as Leptogium furfuraceum), Shrestha & St.Clair (2009: 113)
- Leptogium saturninum (Dicks.) Nyl. - Anderson (1962: 252), Shushan & Anderson (1969: 465), Shrestha & St.Clair (2009: 113)
- Letharia vulpina (L.) Hue - Shushan & Anderson (1969: 466)
- Lichinella stipatula Nyl. - Anderson (1962: 253), Shushan & Anderson (1969: 466)
- Lobothallia alphoplaca (Wahlenb.) Hafellner - Anderson (1962: 249 as Lecanora alphoplaca), Shushan & Anderson (1969: 461 as Lecanora alphoplaca), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 113), Henson et al. (2013: 21)
- Lobothallia melanaspis (Ach.) Hafellner - Shushan & Anderson (1969: 462 as Lecanora melanaspis)
- Lobothallia praeradiosa (Nyl.) Hafellner - Shushan & Anderson (1969: 462 as Lecanora praeradiosa), Shrestha & St.Clair (2009: 113)
- Lobothallia radiosa (Hoffm.) Hafellner - Shrestha & St.Clair (2009: 113)
- Massalongia carnosa (Dicks.) Körb. - Shushan & Anderson (1969: 466)
- Megaspora verrucosa (Ach.) Hafellner & V. Wirth - Shushan & Anderson (1969: 463 as Lecanora verrucosa), St.Clair et al. (1998: 312), Shrestha & St.Clair (2009: 113), Henson et al. (2013: 21)
- Melanelia stygia (L.) Essl. - Shrestha & St.Clair (2009: 113), Henson et al. (2013: 21)
- Melanelixia glabra (Schaer.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Anderson (1962: 254 as Parmelia glabra)
- Melanelixia glabratula (Lamy) Sandler & Arup - Shrestha & St.Clair (2009: 113 erroneously as Melanelixia fuliginosa)
- Melanelixia glabroides (Essl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Esslinger (1977: 72 as Parmelia glabroides Protologue), Esslinger (1978: 48 as Melanelia glabroides), Blanco et al. (2004: 882), Divakar & Upreti (2005: 513)
- Melanelixia subargentifera (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Anderson (1962: 255 as Parmelia subargentifera), Shushan & Anderson (1969: 468 as Parmelia subargentifera), Carmer (1975: 53 as Parmelia subargentifera), Shrestha & St.Clair (2009: 113), Henson et al. (2013: 21)
- Melanelixia subaurifera (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Shrestha & St.Clair (2009: 113)
- Melanohalea elegantula (Zahlbr.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Shushan & Anderson (1969: 467 as Parmelia elegantula), Shrestha & St.Clair (2009: 113)
- Melanohalea exasperata (De Not.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Shrestha & St.Clair (2009: 113)
- Melanohalea exasperatula (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Anderson (1962: 254 as Parmelia exasperatula), Shushan & Anderson (1969: 467 as Parmelia exasperatula), Carmer (1975: 53 as Parmelia exasperatula)
- Melanohalea infumata (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Shushan & Anderson (1969: 467 as Parmelia infumata)
- Melanohalea subelegantula (Essl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Shrestha & St.Clair (2009: 113 First record)
- Melanohalea subolivacea (Nyl. ex Hasse) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch - Shushan & Anderson (1969: 468 as Parmelia subolivacea), Carmer (1975: 53 as Parmelia subolivacea), Shrestha & St.Clair (2009: 113)
- Micarea denigrata (Fr.) Hedl. - Shushan & Anderson (1969: 466)
- Micarea lignaria (Ach.) Hedl. - Shrestha & St.Clair (2009: 113 First record)
- Miriquidica garovaglii (Schaer.) Hertel & Rambold - Anderson (1962: 250 as Lecidea aenea), Shushan & Anderson (1969: 463 as Lecidea aenea)
- Miriquidica instrata (Nyl.) Hertel & Rambold - Shushan & Anderson (1969: 464 as Lecidea instrata)
- Miriquidica lulensis (Hellb.) Hertel & Rambold - Anderson & Carmer (1974: 219 as Lecidea circumnigrata var. reagens)
- Monoblastiopsis nigrocortina R. C. Harris & C. A. Morse - Harris & Morse (2008: 92 Type in KANU)
- Montanelia disjuncta (Erichsen) Divakar, A. Crespo, Wedin & Essl. - Shushan & Anderson (1969: 467 as Parmelia disjuncta)
- Montanelia panniformis (Nyl.) Divakar, A. Crespo, Wedin & Essl. - Shrestha & St.Clair (2009: 113 as Melanelia panniformis)
- Montanelia sorediata (Ach.) Divakar, A. Crespo, Wedin & Essl. - Anderson & Carmer (1974: 221 as Parmelia sorediosa), Shrestha & St.Clair (2009: 113 as Melanelia sorediata)
- Montanelia tominii (Oxner) Divakar, A. Crespo, Wedin & Essl. - Anderson (1962: 255 as Parmelia saximontana), Shushan & Anderson (1969: 468 as Parmelia substygia), Shrestha & St.Clair (2009: 113 as Melanelia tominii), Henson et al. (2013: 18), Henson et al. (2013: 21)
- Mycobilimbia berengeriana (A. Massal.) Hafellner & V. Wirth - Anderson (1962: 250 as Lecidea berengeriana), Shushan & Anderson (1969: 463 as Lecidea berengeriana), Sarrión et al. (2003: 2), Shrestha & St.Clair (2009: 114 as Mycobilimbia berengeriana)
- Mycobilimbia carneoalbida (Müll. Arg.) Printzen - Shushan & Anderson (1969: 455 as Bacidia sphaeroides)
- Myochroidea rufofusca (Anzi) Printzen, T. Sprib. & Tønsberg - Shushan & Anderson (1969: 465 as Lecidea rufofusca), St.Clair et al. (1998: 312 as Lecidea rufofusca)
- Myriolecis crenulata (Ach.) Sliwa, Zhao Xin & Lumbsch - Shrestha & St.Clair (2009: 111 as Lecanora crenulata First record)
- Myriolecis dispersa (Pers.) Sliwa, Zhao Xin & Lumbsch - Anderson (1962: 249 as Lecanora dispersa), Shushan & Anderson (1969: 462 as Lecanora dispersa), Shrestha & St.Clair (2009: 111 as Lecanora dispersa)
- Myriolecis hagenii (Ach.) Sliwa, Zhao Xin & Lumbsch - Shushan & Anderson (1969: 462 as Lecanora hagenii), Carmer (1975: 52 as Lecanora hagenii), St.Clair et al. (1998: 312 as Lecanora hagenii), Shrestha & St.Clair (2009: 112 as Lecanora hagenii)
- Myriospora smaragdula (Wahlenb. ex Ach.) K. Knudsen & B. Abbott - Anderson (1962: 244 as Acarospora smaragdula), Shushan & Anderson (1969: 454 as Acarospora smaragdula), Shrestha & St.Clair (2009: 107 as Acarospora smaragdula)
- Nephroma bellum (Spreng.) Tuck. - Shushan & Anderson (1969: 466), Shrestha & St.Clair (2009: 114)
- Nephroma helveticum Ach. - Shushan & Anderson (1969: 466), Shrestha & St.Clair (2009: 114)
- Nephroma laevigatum Ach. - Shrestha & St.Clair (2009: 114 First record)
- Nephroma parile (Ach.) Ach. - Shushan & Anderson (1969: 466), Shrestha & St.Clair (2009: 114)
- Normandina pulchella (Borrer) Nyl. - Anderson (1962: 253), Shushan & Anderson (1969: 466), Shrestha & St.Clair (2009: 114)
- Ochrolechia androgyna (Hoffm.) Arnold - Shrestha & St.Clair (2009: 114 First record)
- Ochrolechia upsaliensis (L.) A. Massal. - Anderson (1962: 253), Shushan & Anderson (1969: 466), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 114)
- Omphalora arizonica (Tuck. ex Willey) T. H. Nash & Hafellner - Shushan & Anderson (1969: 466 as Omphalodium arizonicum), Shrestha & St.Clair (2009: 114)
- Pachypeltis cladodes (Tuck.) Søchting, Frödén & Arup - Shushan & Anderson (1969: 456 as Caloplaca cladodes), Shrestha & St.Clair (2009: 108 as Caloplaca cladodes)
- Pannaria conoplea (Ach.) Bory - Anderson (1962: 253 as Pannaria pityrea), Shushan & Anderson (1969: 466 as Pannaria pityrea)
- Pannaria tavaresii P. M. Jørg. - Jørgensen (1978: 68 Protologue), Shrestha & St.Clair (2009: 114) Type
- Parmelia saxatilis (L.) Ach. - Shushan & Anderson (1969: 468), Shrestha & St.Clair (2009: 114)
- Parmelia sulcata Taylor - Anderson (1962: 255), Shushan & Anderson (1969: 468), Carmer (1975: 53), Shrestha & St.Clair (2009: 114)
- Parmeliopsis ambigua (Wulfen) Nyl. - Shushan & Anderson (1969: 468), Shrestha & St.Clair (2009: 114)
- Parmeliopsis hyperopta (Ach.) Vain. - Shushan & Anderson (1969: 468), Shrestha & St.Clair (2009: 114)
- Parmotrema crinitum (Ach.) M. Choisy - Shushan & Anderson (1969: 467 as Parmelia crinita)
- Parmotrema reticulatum (Taylor) M. Choisy - Anderson & Carmer (1974: 221 as Parmelia reticulata), Shrestha & St.Clair (2009: 114)
- Parvoplaca tiroliensis (Zahlbr.) Arup, Søchting & Frödén - Shushan & Anderson (1969: 456 as Caloplaca tiroliensis), Shrestha & St.Clair (2009: 109 as Caloplaca tiroliensis)
- Peccania arizonica Tuck. ex Herre - Shrestha & St.Clair (2009: 114 First record)
- Peccania kansana (Tuck.) Forssell - Shushan & Anderson (1969: 468)
- Peltigera aphthosa (L.) Willd. - Shushan & Anderson (1969: 469), Shrestha & St.Clair (2009: 114)
- Peltigera canina (L.) Willd. - Shushan & Anderson (1969: 469), Shrestha & St.Clair (2009: 114)
- Peltigera collina (Ach.) Schrad. - Shushan & Anderson (1969: 469)
- Peltigera didactyla (With.) J. R. Laundon - Shrestha & St.Clair (2009: 114)
- Peltigera elisabethae Gyeln. - Anderson & Carmer (1974: 221)
- Peltigera horizontalis (Huds.) Baumg. - Shushan & Anderson (1969: 469)
- Peltigera lepidophora (Vain.) Bitter - Anderson (1962: 255), Shushan & Anderson (1969: 469)
- Peltigera malacea (Ach.) Funck - Shushan & Anderson (1969: 469), Shrestha & St.Clair (2009: 114)
- Peltigera membranacea (Ach.) Nyl. - Shushan & Anderson (1969: 469)
- Peltigera neckeri Hepp ex Müll. Arg. - St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 114)
- Peltigera praetextata (Flörke ex Sommerf.) Zopf - St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 115)
- Peltigera polydactylon (Neck.) Hoffm. - Shushan & Anderson (1969: 469), Shrestha & St.Clair (2009: 114)
- Peltigera rufescens (Weiss) Humb. - Anderson (1962: 255 as Peltigera canina var. rufescens), Shrestha & St.Clair (2009: 115)
- Peltigera scabrosa Th. Fr. - Shushan & Anderson (1969: 469)
- Peltigera venosa (L.) Hoffm. - Shushan & Anderson (1969: 470), Shrestha & St.Clair (2009: 115)
- Peltula euploca (Ach.) Vain. - Anderson (1962: 248 as Heppia euploca), Shushan & Anderson (1969: 461 as Heppia euploca)
- Peltula obscurans (Nyl.) Gyeln. var. hassei (Zahlbr.) Wetmore - Shrestha & St.Clair (2009: 115 First record)
- Peltula patellata (Bagl.) Swinscow & Krog - Tuckerman (1882: 115 as Heppia polyspora Type), Fink (1910: 149 as Endocarpiscum polysporum), Shushan & Anderson (1969: 461 as Heppia polyspora)
- Pertusaria octomela (Norman) Erichsen - Anderson & Carmer (1974: 221)
- Pertusaria saximontana Wetmore - Anderson & Carmer (1974: 221), Shrestha & St.Clair (2009: 115)
- Pertusaria sommerfeltii (Sommerf.) Flörke - Anderson & Carmer (1974: 221)
- Phaeophyscia ciliata (Hoffm.) Moberg - Shushan & Anderson (1969: 470 as Physcia ciliata), Shrestha & St.Clair (2009: 115)
- Phaeophyscia constipata (Nyl.) Moberg - Shushan & Anderson (1969: 470 as Physcia constipata), Shrestha & St.Clair (2009: 115)
- Phaeophyscia decolor (Kashiw.) Essl. - Shrestha & St.Clair (2009: 115), Henson et al. (2013: 21)
- Phaeophyscia endococcina (Körb.) Moberg - Shushan & Anderson (1969: 470 as Physcia endococcinea), Carmer (1975: 54 as Physcia endococcinea), Shrestha & St.Clair (2009: 115)
- Phaeophyscia hirsuta (Mereschk.) Essl. - Carmer (1975: 54 as Physcia hirsuta), Shrestha & St.Clair (2009: 115)
- Phaeophyscia hirtella Essl. - Henson et al. (2013: 21)
- Phaeophyscia hispidula (Ach.) Essl. - Anderson (1962: 255 as Physcia setosa), Shushan & Anderson (1969: 471 as Physcia setosa), Shrestha & St.Clair (2009: 115)
- Phaeophyscia kairamoi (Vain.) Moberg - Shrestha & St.Clair (2009: 115)
- Phaeophyscia nigricans (Flörke) Moberg - St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 115)
- Phaeophyscia orbicularis (Neck.) Moberg - Shushan & Anderson (1969: 470 as Physcia orbicularis), Carmer (1975: 54 as Physcia orbicularia), Shrestha & St.Clair (2009: 115)
- Phaeophyscia sciastra (Ach.) Moberg - Anderson (1962: 255 as Physcia sciastra), Shushan & Anderson (1969: 471 as Physcia sciastra), Shrestha & St.Clair (2009: 115), Henson et al. (2013: 21)
- Phaeorrhiza nimbosa (Fr.) H. Mayrhofer & Poelt - Shushan & Anderson (1969: 473 as Rinodina nimbosa), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 115)
- Phaeorrhiza sareptana (Tomin) H. Mayrhofer & Poelt - St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 115)
- Phylliscum demangeonii (Moug. & Mont.) Nyl. - Shushan & Anderson (1969: 470)
- Physcia adscendens H. Olivier - Shushan & Anderson (1969: 470), Carmer (1975: 53), Shrestha & St.Clair (2009: 115)
- Physcia aipolia (Ehrh. ex Humb.) Fürnr. - Shushan & Anderson (1969: 470), Carmer (1975: 53), Shrestha & St.Clair (2009: 115)
- Physcia albinea (Ach.) Nyl. - Shushan & Anderson (1969: 470), Shrestha & St.Clair (2009: 115)
- Physcia biziana (A. Massal.) Zahlbr. - Shushan & Anderson (1969: 470), Shrestha & St.Clair (2009: 115)
- Physcia caesia (Hoffm.) Hampe ex Fürnr. - Anderson (1962: 255), Shushan & Anderson (1969: 470), Carmer (1975: 54), Shrestha & St.Clair (2009: 115), Henson et al. (2013: 21)
- Physcia dubia (Hoffm.) Lettau - Anderson (1962: 256 as Physcia teretiuscula), Shushan & Anderson (1969: 470), Shushan & Anderson (1969: 470 as Physcia intermedia), Shushan & Anderson (1969: 471 as Physcia teretiuscula), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 115)
- Physcia magnussonii Frey - Shrestha & St.Clair (2009: 115), Henson et al. (2013: 21)
- Physcia phaea (Tuck.) J. W. Thomson - Anderson (1962: 255), Anderson (1962: 255 as Physcia callosa), Shushan & Anderson (1969: 470), Shushan & Anderson (1969: 470 as Physcia callosa), Shushan & Anderson (1969: 470 as Physcia cascadensis), Shrestha & St.Clair (2009: 116), Henson et al. (2013: 21)
- Physcia stellaris (L.) Nyl. - Shushan & Anderson (1969: 471), Carmer (1975: 54), Shrestha & St.Clair (2009: 116)
- Physcia subalbinea Nyl. - Shushan & Anderson (1969: 471 as Physcia wainioi)
- Physcia subtilis Degel. - Shushan & Anderson (1969: 471)
- Physcia tenella (Scop.) DC. - Anderson (1962: 256), Shushan & Anderson (1969: 471)
- Physcia tribacia (Ach.) Nyl. - Carmer (1975: 54), Shrestha & St.Clair (2009: 116)
- Physciella chloantha (Ach.) Essl. - Shrestha & St.Clair (2009: 116)
- Physciella nepalensis (Poelt) Essl. - Shrestha & St.Clair (2009: 116)
- Physconia detersa (Nyl.) Poelt - Shrestha & St.Clair (2009: 116)
- Physconia enteroxantha (Nyl.) Poelt - Anderson & Carmer (1974: 221), Shrestha & St.Clair (2009: 116)
- Physconia isidiigera (Zahlbr.) Essl. - Shrestha & St.Clair (2009: 116 First record)
- Physconia muscigena (Ach.) Poelt - Anderson (1962: 255 as Physcia muscigena), Shushan & Anderson (1969: 470 as Physconia muscigena), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 116)
- Physconia perisidiosa (Erichsen) Moberg - Shrestha & St.Clair (2009: 116)
- Physconia thomsonii Essl. - Esslinger (1994: 97 Type in DUKE)
- Piccolia ochrophora (Nyl.) Hafellner - Carmer (1975: 55 as Strangospora ochrophora)
- Placidium lachneum (Ach.) B. de Lesd. - Anderson (1962: 248 as Dermatocarpon lachneum), Shushan & Anderson (1969: 460 as Dermatocarpon lachneum)
- Placidium squamulosum (Ach.) Breuss - Shrestha & St.Clair (2009: 116)
- Placopyrenium fuscellum (Turner) Gueidan & Cl. Roux - Shushan & Anderson (1969: 476 as Verrucaria fuscella)
- Placopyrenium stanfordii (Herre) K. Knudsen - Shrestha & St.Clair (2009: 116 First record)
- Placynthiella oligotropha (J. R. Laundon) Coppins & P. James - Shushan & Anderson (1969: 464 as Lecidea oligotropha)
- Placynthiella uliginosa (Schrad.) Coppins & P. James - Shushan & Anderson (1969: 465 as Lecidea uliginosa)
- Placynthium asperellum (Ach.) Trevis. - Shushan & Anderson (1969: 471 as Placynthium aspratile), Shrestha & St.Clair (2009: 116)
- Placynthium flabellosum (Tuck.) Zahlbr. - Shushan & Anderson (1969: 471)
- Placynthium nigrum (Huds.) Gray - Anderson (1962: 256), Shushan & Anderson (1969: 471), Shrestha & St.Clair (2009: 116)
- Platismatia glauca (L.) W. L. Culb. & C. F. Culb. - Shushan & Anderson (1969: 471), Shrestha & St.Clair (2009: 116)
- Pleopsidium chlorophanum (Wahlenb.) Zopf - Magnusson (1956: 15 as Acarospora weldensis Type), Shushan & Anderson (1969: 454 as Acarospora chlorophana), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 116)
- Pleopsidium flavum (Bellardi) Körb. - Anderson (1962: 244 as Acarospora flava), Shrestha & St.Clair (2009: 116), Henson et al. (2013: 21)
- Polyblastia bryophila Lönnr. - Anderson & Carmer (1974: 221)
- Polyblastia theleodes (Sommerf.) Th. Fr. - Anderson & Carmer (1974: 222)
- Polyblastidium microphyllum (Kurok.) Kalb - Shrestha & St.Clair (2009: 111 as Heterodermia microphylla First record)
- Polycauliona candelaria (L.) Frödén, Arup, & Søchting - Shrestha & St.Clair (2009: 119 as Xanthoria candelaria First record)
- Polycauliona polycarpa (Hoffm.) Frödén, Arup, & Søchting - Shushan & Anderson (1969: 476 as Xanthoria polycarpa), Carmer (1975: 55 as Xanthoria polycarpa)
- Polychidium muscicola (Sw.) Gray - Shushan & Anderson (1969: 471)
- Porocyphus coccodes Flot. ex Körb. - Shushan & Anderson (1969: 471)
- Porpidia flavocoerulescens (Hornem.) Hertel & A. J. Schwab - Shushan & Anderson (1969: 464 as Lecidea flavocaerulescens)
- Porpidia macrocarpa (DC.) Hertel & A. J. Schwab - Shushan & Anderson (1969: 464 as Lecidea macrocarpa)
- Porpidia speirea (Ach.) Kremp. - Anderson & Carmer (1974: 220 as Lecidea speirea)
- Protomicarea alpestris (Sommerf.) McCune - Anderson (1974: 44 as Lecidea alpestris)
- Protopannaria pezizoides (Weber) P. M. Jørg. & S. Ekman - Shushan & Anderson (1969: 466 as Pannaria pezizoides), Shrestha & St.Clair (2009: 116)
- Protoparmelia badia (Hoffm.) Hafellner - Anderson (1962: 249 as Lecanora badia), Shushan & Anderson (1969: 461 as Lecanora badia), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 116), Henson et al. (2013: 21)
- Protoparmeliopsis garovaglii (Körb.) Arup, Zhao Xin & Lumbsch subsp. garovaglii - Shushan & Anderson (1969: 462 as Lecanora garovaglii), Shrestha & St.Clair (2009: 112as Lecanora garovaglii), Henson et al. (2013: 21as Lecanora garovaglii)
- Protoparmeliopsis muralis (Schreb.) M. Choisy - Anderson (1962: 249 as Lecanora muralis), Shushan & Anderson (1969: 462 as Lecanora muralis), Shrestha & St.Clair (2009: 112 as Lecanora muralis)
- Protoparmeliopsis peltata (Ramond) Arup, Zhao Xin & Lumbsch - Shushan & Anderson (1969: 462 as Lecanora peltata), Shrestha & St.Clair (2009: 117 as Rhizoplaca peltata)
- Pseudephebe minuscula (Nyl. ex Arnold) Brodo & D. Hawksw. - Shushan & Anderson (1969: 455 as Alectoria minuscula), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 116), Henson et al. (2013: 21)
- Pseudephebe pubescens (L.) M. Choisy - Shushan & Anderson (1969: 455 as Alectoria pubescens), Shrestha & St.Clair (2009: 116), Henson et al. (2013: 22)
- Pseudevernia intensa (Nyl.) Hale & W. L. Culb. - Shushan & Anderson (1969: 460 erroneously as Evernia furfuracea), Shushan & Anderson (1969: 471), Shrestha & St.Clair (2009: 116)
- Psora cerebriformis W. A. Weber - Shrestha & St.Clair (2009: 116)
- Psora crenata (Taylor) Reinke - Shushan & Anderson (1969: 464 as Lecidea crenata)
- Psora decipiens (Hedwig) Hoffm. - Shushan & Anderson (1969: 464 as Lecidea decipiens), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 116)
- Psora globifera (Ach.) A. Massal. - Anderson (1962: 250 as Lecidea globifera), Shushan & Anderson (1969: 464 as Lecidea globifera), Shrestha & St.Clair (2009: 116)
- Psora himalayana (C. Bab.) Timdal - Shrestha & St.Clair (2009: 116)
- Psora icterica (Mont.) Müll. Arg. - Shushan & Anderson (1969: 464 as Lecidea icterica)
- Psora luridella (Tuck.) Fink - Shushan & Anderson (1969: 464 as Lecidea luridella), Shrestha & St.Clair (2009: 116)
- Psora nipponica (Zahlbr.) Gotth. Schneider - Anderson (1962: 251 as Lecidea novomexicana), Shushan & Anderson (1969: 464 as Lecidea novomexicana), Shrestha & St.Clair (2009: 117)
- Psora rubiformis (Wahlenb. ex Ach.) Hook. - Shushan & Anderson (1969: 465 as Lecidea rubiformis), Shrestha & St.Clair (2009: 117)
- Psora russellii (Tuck.) A. Schneid. - Anderson (1962: 251 as Lecidea russelii)
- Psora tuckermanii R.A. Anderson ex Timdal - Shrestha & St.Clair (2009: 117)
- Psoroma hypnorum (Vahl) Gray - Shushan & Anderson (1969: 472), Shrestha & St.Clair (2009: 117)
- Psorotichia minuta H. Magn. - Anderson (1967: 342), Shushan & Anderson (1969: 472)
- Psorula rufonigra (Tuck.) Gotth. Schneider - Shushan & Anderson (1969: 465 as Lecidea rufonigra)
- Pterygiopsis atra Vain. - Anderson (1962: 256), Shushan & Anderson (1969: 472)
- Punctelia borreri (Turner) Krog - Anderson (1962: 253 as Parmelia borreri)
- Punctelia hypoleucites (Nyl.) Krog - Shushan & Anderson (1969: 467 as Parmelia hypoleucites), Shrestha & St.Clair (2009: 117)
- Punctelia stictica (Delise ex Duby) Krog - Shushan & Anderson (1969: 468 as Parmelia stictica), Shrestha & St.Clair (2009: 117)
- Ramalina obtusata (Arnold) Bitter - Shrestha & St.Clair (2009: 117)
- Ramalina pollinaria (Westr.) Ach. - Anderson (1962: 256), Shushan & Anderson (1969: 472)
- Ramalina sinensis Jatta - Shrestha & St.Clair (2009: 117)
- Ramboldia elabens (Fr.) Kantvilas & Elix - Shushan & Anderson (1969: 464 as Lecidea melancheima)
- Rhizocarpon anaperum (Vain.) Vain. - Shushan & Anderson (1969: 472)
- Rhizocarpon badioatrum (Flörke ex Spreng.) Th. Fr. - Shushan & Anderson (1969: 472)
- Rhizocarpon disporum (Nägeli ex Hepp) Müll. Arg. - Anderson (1962: 256), Shushan & Anderson (1969: 472), Shrestha & St.Clair (2009: 117), Henson et al. (2013: 21)
- Rhizocarpon effiguratum (Anzi) Th. Fr. - Shushan & Anderson (1969: 472)
- Rhizocarpon geographicum (L.) DC. - Anderson (1962: 257), Shushan & Anderson (1969: 472), Shushan & Anderson (1969: 472 as Rhizocarpon riparium), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 117), Henson et al. (2013: 21)
- Rhizocarpon grande (Flörke ex Flot.) Arnold - Shushan & Anderson (1969: 472)
- Rhizocarpon intermediellum Räsänen - Shushan & Anderson (1969: 472)
- Rhizocarpon intersitum Arnold - Shushan & Anderson (1969: 472)
- Rhizocarpon macrosporum Räsänen - Shushan & Anderson (1969: 472), Shushan & Anderson (1969: 472 as Rhizocarpon sphaerosporum), Shrestha & St.Clair (2009: 117)
- Rhizocarpon norvegicum Räsänen - Shushan & Anderson (1969: 472)
- Rhizocarpon obscuratum (Ach.) A. Massal. - Anderson & Carmer (1974: 222), Anderson (1974: 46 as Rhizocarpon permodestum)
- Rhizocarpon polycarpum (Hepp) Th. Fr. - Shushan & Anderson (1969: 472), Henson et al. (2013: 22)
- Rhizocarpon saanaense Räsänen - Shushan & Anderson (1969: 472 as Rhizocarpon sublucidum)
- Rhizocarpon superficiale (Schaer.) Malme - Shushan & Anderson (1969: 472)
- Rhizocarpon tetramerum (Vain.) Vain. - Anderson & Carmer (1974: 222)
- Rhizoplaca chrysoleuca (Sm.) Zopf - Anderson (1962: 249 as Lecanora rubina), Shushan & Anderson (1969: 462 as Lecanora chrysoleuca), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 117), Henson et al. (2013: 22)
- Rhizoplaca melanophthalma (Ram. ex Lam. & DC.) Leuckert & Poelt - Anderson (1962: 249 as Lecanora melanophthalma), Shushan & Anderson (1969: 462 as Lecanora melanophthalma), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 117), Henson et al. (2013: 22)
- Rhizoplaca novomexicana (H. Magn.) S. D. Leav., Zhao Xin & Lumbsch - Anderson (1962: 249 as Lecanora novomexicana), Shushan & Anderson (1969: 462 as Lecanora novomexicana), Shushan & Anderson (1969: 463 as Lecanora thomsonii), St.Clair et al. (1998: 312 as Lecanora novomexicana), Shrestha & St.Clair (2009: 112 as Lecanora novomexicana), Henson et al. (2013: 21 as Lecanora novomexicana)
- Rhizoplaca subdiscrepans (Nyl.) R. Sant. - Henson et al. (2013: 22)
- Rhizoplaca weberi (Ryan) S. D. Leav., Zhao Xin & Lumbsch - Ryan (1989: 10 as Lecanora weberi Protologue) Type
- Rinodina archaea (Ach.) Arnold - Carmer (1975: 54), Shrestha & St.Clair (2009: 117)
- Rinodina aurantiaca Sheard - Sheard & Mayrhofer (2002: 653)
- Rinodina bischoffii (Hepp) A. Massal. - Shushan & Anderson (1969: 472)
- Rinodina boulderensis Sheard - Sheard & Mayrhofer (2002: 655 Type in COLO)
- Rinodina coloradiana H. Magn. - Magnusson (1952: 48 Type in UPS), Shushan & Anderson (1969: 472)
- Rinodina conradii Körb. - Anderson (1962: 257), Shushan & Anderson (1969: 472)
- Rinodina exigua (Ach.) Gray - Shushan & Anderson (1969: 472), Carmer (1975: 54)
- Rinodina imshaugii Sheard - Sheard (2010: 115 Type in MSC)
- Rinodina milvina (Wahlenb. ex Ach.) Th. Fr. - Anderson (1962: 257), Shushan & Anderson (1969: 472), Shrestha & St.Clair (2009: 117), Henson et al. (2013: 22)
- Rinodina mniaraea (Ach.) Körb. - Shushan & Anderson (1969: 473), Shrestha & St.Clair (2009: 117)
- Rinodina pachysperma H. Magn. - Carmer (1975: 55)
- Rinodina pyrina (Ach.) Arnold - Carmer (1975: 55)
- Rinodina riparia Sheard - Sheard (1998: 37 Type in COLO), Sheard (2010: 174)
- Rinodina turfacea (Wahlenb.) Körb. - Shushan & Anderson (1969: 473), Shrestha & St.Clair (2009: 117)
- Rinodina zwackhiana (Kremp.) Körb. - Anderson (1962: 257 as Rinodina violascens), Shushan & Anderson (1969: 473 as Rinodina violascens)
- Romjularia lurida (Ach.) Timdal - Shushan & Anderson (1969: 464 as Lecidea lurida)
- Rostania ceraniscum (Nyl.) Otálora, P. M. Jørg. & Wedin - St.Clair et al. (1998: 312 as Collema ceraniscum First record), Shrestha & St.Clair (2009: 110 as Collema ceraniscum)
- Rufoplaca arenaria (Pers.) Arup, Søchting & Frödén - Anderson (1962: 246 as Caloplaca lamprocheila), Shushan & Anderson (1969: 456 as Caloplaca arenaria), Henson et al. (2013: 21 as Caloplaca arenaria)
- Rusavskia elegans (Link) S. Y. Kondr. & Kärnefelt - Anderson (1962: 246 as Caloplaca elegans), Shushan & Anderson (1969: 476 as Xanthoria elegans), Carmer (1975: 55 as Xanthoria elegans), St.Clair et al. (1998: 313 as Xanthoria elegans), Shrestha & St.Clair (2009: 119 as Xanthoria elegans), Henson et al. (2013: 22 as Xanthoria elegans)
- Rusavskia sorediata (Vain.) Poelt - St.Clair et al. (1998: 313 as Xanthoria sorediata), Shrestha & St.Clair (2009: 119 as Xanthoria sorediata), Henson et al. (2013: 22 as Xanthoria sorediata)
- Sarcogyne clavus (DC.) Kremp. - Anderson (1962: 258), Shushan & Anderson (1969: 473)
- Sarcogyne hypophaea (Nyl.) Arnold - Shushan & Anderson (1969: 473 as Sarcogyne privigna)
- Sarcogyne regularis Körb. - Shushan & Anderson (1969: 473), Shrestha & St.Clair (2009: 117)
- Schadonia fecunda (Th. Fr.) Vezda & Poelt - Anderson (1967: 341 as Lopadium fecundum), Shushan & Anderson (1969: 466 as Lopadium fecundum)
- Schaereria cinereorufa (Schaer.) Th. Fr. - Shushan & Anderson (1969: 463 as Lecidea cinereorufa)
- Schaereria fuscocinerea (Nyl.) Clauzade & Cl. Roux - Shushan & Anderson (1969: 465 as Lecidea tenebrosa), Henson et al. (2013: 22)
- Scoliciosporum umbrinum (Ach.) Lojka - Anderson (1962: 245 as Bacidia umbrina), Shushan & Anderson (1969: 455 as Bacidia umbrina)
- Scytinium contortum (Sierk) Otálora, P. M. Jørg. & Wedin - Sierk (1964: 272 as Leptogium contortum Protologue), Shushan & Anderson (1969: 465 as Leptogium contortum) Type
- Scytinium erectum (Sierk) Otálora, P.M. Jørg. & Wedin - Sierk (1964: 261 as Leptogium erectum Protologue), Shushan & Anderson (1969: 465 as Leptogium erectum) Type
- Scytinium gelatinosum (With.) Otálora, P.M. Jørg. & Wedin - Shushan & Anderson (1969: 466 as Leptogium sinuatum), Shrestha & St.Clair (2009: 113 as Leptogium gelatinosum)
- Scytinium juniperinum (Tuck.) Otálora, P. M. Jørg. & Wedin - Shushan & Anderson (1969: 465 as Leptogium juniperinum)
- Scytinium lichenoides (L.) Otálora, P. M. Jørg. & Wedin - Shushan & Anderson (1969: 465 as Leptogium lichenoides), Shrestha & St.Clair (2009: 113 as Leptogium lichenoides)
- Scytinium plicatile (Ach.) Otálora, P. M. Jørg. & Wedin - Shushan & Anderson (1969: 465 as Leptogium plicatile)
- Scytinium rivale (Tuck.) Otálora, P. M. Jørg. & Wedin - Shushan & Anderson (1969: 465 as Leptogium rivale)
- Scytinium subtile (Schrad.) Otálora, P. M. Jørg. & Wedin - Shushan & Anderson (1969: 465 as Leptogium minutissimum)
- Scytinium tenuissimum (Hoffm.) Otálora, P. M. Jørg. & Wedin - Anderson (1962: 252 as Leptogium tenuissimum), Shushan & Anderson (1969: 466 as Leptogium tenuissimum), Shrestha & St.Clair (2009: 113 as Leptogium tenuissimum)
- Scytinium teretiusculum (Wallr.) Otálora, P. M. Jørg. & Wedin - Shrestha & St.Clair (2009: 113 as Leptogium teretiusculum First record)
- Segestria mammillosa (Th. Fr.) Vain. - Anderson (1967: 341 as Porina mammillosa), Shushan & Anderson (1969: 471 as Porina mammillosa)
- Seirophora contortuplicata (Ach.) Frödén - Shrestha & St.Clair (2009: 117)
- Seawardiella lobulata (Flörke) S. Y. Kondr., I. Kärnefelt & A. Thell - Shushan & Anderson (1969: 456 as Caloplaca lobulata)
- Solorina bispora Nyl. - Shushan & Anderson (1969: 473), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 117)
- Solorina crocea (L.) Ach. - Shushan & Anderson (1969: 473)
- Solorina octospora Arnold - Shushan & Anderson (1969: 473), Shrestha & St.Clair (2009: 117)
- Solorina saccata (L.) Ach. - Shushan & Anderson (1969: 473)
- Solorina spongiosa (Ach.) Anzi - Shushan & Anderson (1969: 473), Shrestha & St.Clair (2009: 117)
- Spilonema revertens Nyl. - Anderson (1962: 258), Shushan & Anderson (1969: 473), Shrestha & St.Clair (2009: 117)
- Sporastatia polyspora (Nyl.) Grummann - Shushan & Anderson (1969: 473 as Sporastatia cinerea), Henson et al. (2013: 22)
- Sporastatia testudinea (Ach.) A. Massal. - Shushan & Anderson (1969: 473), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 117), Henson et al. (2013: 22)
- Squamarina lentigera (Weber) Poelt - Shushan & Anderson (1969: 462 as Lecanora lentigera), Shrestha & St.Clair (2009: 117)
- Squamulea subsoluta (Nyl.) Arup, Søchting & Frödén - St.Clair et al. (1998: 312 as Caloplaca modesta), Shrestha & St.Clair (2009: 109 as Caloplaca subsoluta)
- Staurothele areolata (Ach.) Lettau - St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 118)
- Staurothele drummondii (Tuck.) Tuck. - Anderson (1962: 258 as Staurothele clopima), Shushan & Anderson (1969: 460 as Endocarpon wilmsoides), Shushan & Anderson (1969: 473 as Staurothele clopima), Shrestha & St.Clair (2009: 118), Henson et al. (2013: 22)
- Staurothele fissa (Taylor) Zw. - Shushan & Anderson (1969: 473), Shrestha & St.Clair (2009: 118)
- Stereocaulon alpinum Laurer - Shushan & Anderson (1969: 474)
- Stereocaulon glareosum (Savicz) H. Magn. - Shushan & Anderson (1969: 474)
- Stereocaulon myriocarpum Th. Fr. - Shushan & Anderson (1969: 474)
- Stereocaulon paschale (L.) Hoffm. - Shushan & Anderson (1969: 474)
- Stereocaulon rivulorum H. Magn. - Shushan & Anderson (1969: 474), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 118)
- Stereocaulon tomentosum Fr. - Shushan & Anderson (1969: 474), Shrestha & St.Clair (2009: 118)
- Strangospora microhaema (Norman) R. A. Anderson - Carmer (1975: 55)
- Sticta fuliginosa (Dicks.) Ach. - Shushan & Anderson (1969: 474)
- Sticta sylvatica (Huds.) Ach. - Shushan & Anderson (1969: 474)
- Tephromela atra (Huds.) Hafellner - Anderson & Carmer (1974: 219 as Lecanora atra), St.Clair et al. (1998: 313 as Tephromela "armeniaca")
- Tetramelas concinnus (Th. Fr.) Giralt - Anderson & Carmer (1974: 217 as Buellia semitensis)
- Tetramelas insignis (Nägeli ex Hepp) Kalb - Shushan & Anderson (1969: 455 as Buellia insignis)
- Tetramelas papillatus (Sommerf.) Kalb - Shrestha & St.Clair (2009: 108 as Buellia papillata)
- Tetramelas triphragmioides (Anzi) A. Nordin & Tibell - Anderson & Carmer (1974: 217 as Buellia triphragmioides)
- Teuvoa junipericola Sohrabi & S. D. Leav. - Shrestha & St.Clair (2009: 108 erroneously as Aspicilia uxoris First record)
- Thallinocarpon nigritellum (Lettau) P. M. Jørg. - Shrestha & St.Clair (2009: 113 as Lichinella nigritella)
- Thalloidima candidum (Weber) A. Massal. - Shushan & Anderson (1969: 474 as Toninia candida), Shrestha & St.Clair (2009: 118 as Toninia candida)
- Thalloidima massatum (Tuck.) Kistenich, Timdal, Bendiksby & S. Ekman - Shushan & Anderson (1969: 475 as Toninia massata)
- Thalloidima sedifolium (Scop.) Kistenich, Timdal, Bendiksby & S. Ekman - Anderson (1962: 259 as Toninia coeruleonigricans), Shushan & Anderson (1969: 475 as Toninia coeruleonigricans)
- Thamnolia subuliformis (Ehrh.) W. L. Culb. - Shushan & Anderson (1969: 474), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 118)
- Thelenella muscorum (Th. Fr.) Vain. - Anderson (1962: 253 as Microglaena muscorum), Shushan & Anderson (1969: 466 as Microglaena muscorum)
- Thelignya lignyota (Wahlenb.) P. M. Jørg. & Henssen - Shushan & Anderson (1969: 471 as Porocyphus dispersus)
- Thrombium epigaeum (Pers.) Wallr. - Shushan & Anderson (1969: 474)
- Thrombium mongolicum H. Magn. - Anderson (1962: 258), Shushan & Anderson (1969: 474)
- Thyrea confusa Henssen - Anderson (1962: 258 erroneously as Thyrea pulvinata), Shushan & Anderson (1969: 474 erroneously as Thyrea pulvinata)
- Tingiopsidium sonomense (Tuck.) Hafellner & T. Sprib. - Anderson & Carmer (1974: 219 as Koerberia sonomensis)
- Toninia philippea (Mont.) Timdal - Anderson (1967: 340 as Catillaria kansuensis), Shushan & Anderson (1969: 457)
- Toninia ruginosa (Tuck.) Herre subsp. ruginosa - Shushan & Anderson (1969: 475)
- Toninia sculpturata (H. Magn.) Timdal - Anderson (1967: 340 as Catillaria sculpturata), Shushan & Anderson (1969: 457 as Catillaria sculpturata)
- Toninia sedifolia (Scop.) Timdal - Shrestha & St.Clair (2009: 118)
- Toninia tristis (Th. Fr.) Th. Fr. subsp. tristis - Anderson (1962: 259), Shushan & Anderson (1969: 475)
- Trapeliopsis flexuosa Borr. - Anderson & Carmer (1974: 219 as Lecidea aeruginosa)
- Trapeliopsis granulosa (Hoffm.) Lumbsch - Shushan & Anderson (1969: 464 as Lecidea granulosa), Shrestha & St.Clair (2009: 118)
- Tremolecia atrata (Ach.) Hertel - Shushan & Anderson (1969: 464 as Lecidea dicksonii), Shrestha & St.Clair (2009: 118)
- Tuckermanella coralligera (W. A. Weber) Essl. - Shushan & Anderson (1969: 457 as Cetraria coralligera), Shrestha & St.Clair (2009: 118)
- Tuckermanella fendleri (Nyl.) Essl. - Shushan & Anderson (1969: 457 as Cetraria fendleri), Shrestha & St.Clair (2009: 118)
- Tuckermannopsis sepincola (Ehrh.) Hale - Shushan & Anderson (1969: 458 as Cetraria scutata)
- Tuckermannopsis subalpina (Imshaug) Kärnefelt - Shrestha & St.Clair (2009: 118 First record)
- Umbilicaria americana Poelt & T. H. Nash - Poelt & Nash (1993: 425 Type in Colorado, USA COLO), Shrestha & St.Clair (2009: 118 First record), Henson et al. (2013: 22)
- Umbilicaria decussata (Vill.) Zahlbr. - Shushan & Anderson (1969: 475), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 118), Henson et al. (2013: 22)
- Umbilicaria deusta (L.) Baumg. - Shushan & Anderson (1969: 475), Shrestha & St.Clair (2009: 118), Henson et al. (2013: 22)
- Umbilicaria hirsuta (Sw. ex Westr.) Ach. - Shushan & Anderson (1969: 475)
- Umbilicaria hyperborea (Ach.) Hoffm. var. hyperborea - Anderson (1962: 259), Shushan & Anderson (1969: 475), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 118), Henson et al. (2013: 22)
- Umbilicaria lyngei Schol. - Shrestha & St.Clair (2009: 118 First record)
- Umbilicaria phaea Tuck. - Shushan & Anderson (1969: 475)
- Umbilicaria polaris (Schol.) Zahlbr. - Shushan & Anderson (1969: 475 erroneously as Umbilicaria krascheninnikovii), Shrestha & St.Clair (2009: 118 erroneously as Umbilicaria krascheninnikovi), Henson et al. (2013: 22 erroneously as Umbilicaria krascheninnikovii)
- Umbilicaria torrefacta (Lightf.) Schrad. - Anderson (1962: 259), Shushan & Anderson (1969: 475), Shrestha & St.Clair (2009: 118), Henson et al. (2013: 22)
- Umbilicaria vellea (L.) Ach. - Anderson (1962: 259), Shushan & Anderson (1969: 475), Shrestha & St.Clair (2009: 118)
- Umbilicaria virginis Schaer. ex Desor - Shushan & Anderson (1969: 475), Feige & Lumbsch (2003: 12), Shrestha & St.Clair et al. (1998: 313), St.Clair (2009: 118), Henson et al. (2013: 18), Henson et al. (2013: 22)
- Usnea cavernosa Tuck. - Shushan & Anderson (1969: 476), Shrestha & St.Clair (2009: 118)
- Usnea cirrosa Motyka - Shrestha & St.Clair (2009: 118 First record)
- Usnea subfloridana Stirt. - Shushan & Anderson (1969: 476 as Usnea comosa)
- Usnea dasopoga (Ach.) Nyl. - Shushan & Anderson (1969: 476)
- Usnea fulvoreagens (Räsänen) Räsänen - Carmer (1975: 55)
- Usnea glabrata (Ach.) Vain. - Shushan & Anderson (1969: 476), Shushan & Anderson (1969: 476 as Usnea sorediifera), Shushan & Anderson (1969: 476 as Usnea variolosa)
- Usnea hirta (L.) Weber ex F. H. Wigg. - Shrestha & St.Clair (2009: 118)
- Usnea subfloridana Stirt. - Shrestha & St.Clair (2009: 118)
- Usnea substerilis Motyka - Shushan & Anderson (1969: 476 as Usnea stuppea)
- Usnea trichodea Ach. - Shushan & Anderson (1969: 476)
- Vahliella leucophaea (Vahl) P. M. Jørg. - Shushan & Anderson (1969: 466 as Pannaria microphylla), Shrestha & St.Clair (2009: 118)
- Variospora aurantia (Pers.) Arup, Frödén & Søchting - Shushan & Anderson (1969: 456 as Caloplaca callopisma)
- Verrucaria inficiens Breuss - Anderson (1962: 248 as Dermatocarpon plumbeum), Shushan & Anderson (1969: 460 as Dermatocarpon plumbeum)
- Verrucaria macrostoma Dufour ex DC. - Anderson (1962: 259), Shushan & Anderson (1969: 476)
- Verrucaria margacea (Wahlenb.) Wahlenb. - Carmer (1975: 55)
- Verrucaria viridula (Schrad.) Ach. - Anderson (1962: 259)
- Villophora microphyllina (Tuck.) S. Y. Kondr. - Shrestha & St.Clair (2009: 108 as Caloplaca microphyllina)
- Vulpicida pinastri (Scop.) J.-E. Mattsson & M. J. Lai - Shushan & Anderson (1969: 458 as Cetraria pinastri), Shrestha & St.Clair (2009: 118)
- Vulpicida tilesii (Ach.) J.-E. Mattsson & M. J. Lai - Shushan & Anderson (1969: 458 as Cetraria tilesii)
- Xanthocarpia tominii (Savicz) Frödén, Arup & Søchting - Shrestha & St.Clair (2009: 109 as Caloplaca tominii First record)
- Xanthomendoza fallax (Hepp ex Arnold) Søchting, Kärnefelt & S. Y. Kondr. - Anderson (1962: 259 as Xanthoria fallax), Shushan & Anderson (1969: 476 as Xanthoria fallax), Carmer (1975: 55 as Xanthoria fallax), Shrestha & St.Clair (2009: 119)
- Xanthomendoza montana (L. Lindblom) Søchting, Kärnefelt & S. Y. Kondr. - Shrestha & St.Clair (2009: 119)
- Xanthomendoza trachyphylla (Tuck.) Frödén, Arup & Søchting - Anderson (1962: 247 as Caloplaca trachyphylla), Shushan & Anderson (1969: 457 as Caloplaca trachyphylla), Shrestha & St.Clair (2009: 109 as Caloplaca trachyphylla)
- Xanthoparmelia chlorochroa (Tuck.) Hale - Shushan & Anderson (1969: 467 as Parmelia chlorochroa), Shrestha & St.Clair (2009: 119)
- Xanthoparmelia coloradoensis (Gyeln.) Hale - Shushan & Anderson (1969: 468 erroneously as Parmelia taractica), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 119), Henson et al. (2013: 22)
- Xanthoparmelia conspersa (Ach.) Hale - Anderson (1962: 254 as Parmelia conspersa), Anderson (1962: 254 as Parmelia isidiata)
- Xanthoparmelia cumberlandia (Gyeln.) Hale - Shushan & Anderson (1969: 467 as Parmelia cumberlandia), St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 119)
- Xanthoparmelia lavicola (Gyeln.) Hale - Anderson & Carmer (1974: 220 as Parmelia kurokawae)
- Xanthoparmelia lineola (E. C. Berry) Hale - Shushan & Anderson (1969: 467 as Parmelia lineola)
- Xanthoparmelia loxodes (Nyl.) O. Blanco et al. - Anderson (1962: 254 as Parmelia isidiotyla), Shushan & Anderson (1969: 467 as Parmelia isidiotyla), Leuckert et al. (1975: 33 as Parmelia loxodes)
- Xanthoparmelia mexicana (Gyeln.) Hale - Shushan & Anderson (1969: 468 as Parmelia mexicana), Shrestha & St.Clair (2009: 119)
- Xanthoparmelia mougeotii (Schaer. ex D. Dietr.) Hale - Anderson (1967: 341 as Parmelia mougeotii), Shushan & Anderson (1969: 468 as Parmelia mougeotii)
- Xanthoparmelia novomexicana (Gyeln.) Hale - Shushan & Anderson (1969: 468 as Parmelia novomexicana), Shrestha & St.Clair (2009: 119)
- Xanthoparmelia occidentalis (Essl.) O. Blanco, A. Crespo, Elix, D. Hawksw. & Lumbsch - Shrestha & St.Clair (2009: 114 as Neofuscelia occidentalis First record)
- Xanthoparmelia plittii (Gyeln.) Hale - Shushan & Anderson (1969: 468 as Parmelia plitti), Shrestha & St.Clair (2009: 119), Henson et al. (2013: 22)
- Xanthoparmelia stenophylla (Ach.) Ahti & D. Hawksw. - Anderson (1962: 255 as Parmelia stenophylla)
- Xanthoparmelia subdecipiens (Vain. ex Lynge) Hale - Anderson & Carmer (1974: 221 as Parmelia subdecipiens)
- Xanthoparmelia subramigera (Gyeln.) Hale - Shushan & Anderson (1969: 468 as Parmelia subramigera)
- Xanthoparmelia wyomingica (Gyeln.) Hale - St.Clair et al. (1998: 313), Shrestha & St.Clair (2009: 119), Henson et al. (2013: 22)
- Xylographa vitiligo (Ach.) J. R. Laundon - Anderson (1967: 342), Shushan & Anderson (1969: 476)
- Xylopsora friesii (Ach.) Bendiksby & Timdal - Shushan & Anderson (1969: 464 as Lecidea friesii), Shrestha & St.Clair (2009: 111 as Hypocenomyce friesii)
- Zahlbrucknerella calcarea (Herre) Herre - Henssen (1963: 80), Shushan & Anderson (1969: 476)
- Zahlbrucknerella fabispora Henssen - Henssen (1977: 39)