- Acarospora boliviana H. Magn. - Knudsen et al. (2008: 4 Neotypification Type in Berlin, Germany B)
- Acarospora rhabarbarina Hue - Knudsen (2008: 10)
- Acarospora rouxii K. Knudsen, Elix & Reeb - Knudsen (2007: 26), Knudsen et al. (2008: 11)
- Acarospora schleicheri (Ach.) A. Massal. - HBG 4397, HBG 4398
- Acroscyphus sphaerophoroides Lév. - Soukop (1965: 29)
- Flakea papillata O.E. Erikss. - Eriksson (1992: 15)
- Alectoria ochroleuca (Hoffm.) A. Massal.
Anaptychia ciliaris
Anaptychia ciliaris var. peruana
Anaptychia comosa is Heterodermia comosa (ESCHW.) FOLLMANN & REDÓN
Anaptychia ephebea
Anaptychia hypoleuca var. propagulifera
Anaptychia hypoleuca var. sorediifera
Anaptychia leucomelaena is Heterodermia leucomelos (L.) Poelt
Anaptychia leucomelaena var. multifida
Anaptychia podocarpa is Heterodermia podocarpa (Bel.) A. Massal.
Anaptychia speciosa is Heterodermia speciosa (WULFEN) TREVISAN
- Arthonia cyanea Müll. Arg. - Soukop (1965: 29)
- Arthopyrenia sublitoralis "(LEIGHT.) ARNOLD" - Soukop (1965: 28)
- Aspidothelium fugiens (Müll. Arg.) R. Sant. - Soukop (1965: 28)
- Asterothyrium monosporum Müll. Arg. - Soukop (1965: 31)
- Asterothyrium pittieri Müll. Arg. - Soukop (1965: 31)
- Aulaxina minuta R. Sant. - Soukop (1965: 30)
- Aulaxina quadrangulare (Stirt.) R. Sant. - Santesson (1952: 302 sub Aulaxinia quadrangula)
Bacidia stanhopeae - Soukop (1965: 35)
- Baeomyces imbricatus
- Bilimbia lobulata (Sommerf.) Hafellner & Coppins - HBG
- Buellia andina Müll. Arg. - Müller Argau (1892: 283), Magnusson (1954: 213)
Buellia barrancae
Buellia bolacina
- Buellia concava Müll. Arg. - Magnusson (1954: 213)
Buellia exilis
Buellia ultima
- Caloplaca difractoradiata
- Candelaria fibrosa (Fr.) Müll. Arg. - HBG (Feuerer xxx)
- Candelina submexicana (B. de Lesd.) Poelt - HBG (Feuerer 2170)
- Cetraria aculeata (Schreb.) Fr. - Kärnefelt (1986: 61)
- Cetraria islandica xxx - HBG (Feuerer: xxx)
- Cetraria odontella (Ach.) Ach. - Kärnefelt (1986: 38)
- Cetraria peruviana Kärnefelt & Thell - Kärnefelt & Thell (1993: 45)
- Chiodecton hypochnoides Nyl.
- Chiodecton sanguineum (SW.) Müll. Arg. - Soukop (1965: 30)
- Chroodiscus coccineus (Leight.) Müll. Arg. - Soukop (1965: 31)
- Chrysothrix candelaris (L.) J. R. Laundon - Thor (1988: 361)
- Chrysothrix granulosa Thor - Thor (1988: 362)
Chrysothrix nolitangere Mont. - Soukop (1965: 31)
- Cladia aggregata (Sw.) Nyl. - Ahti (2000: 37)
- Cladia fuliginosa Filson - Ahti (2000: 39)
Cladina arbuscula subsp. peruviana - Ahti (2000: 48 as )
Cladina arcuata (Ahti) Ahti & FOLLMANN - Ahti (2000: 69 as )
Cladina confusa (R.SANTESSON) FOLLMANN & Ahti f. confusa - Ahti (2000: 61 as )
Cladina confusa f. bicolor - Ahti (2000: 63 as )
Cladina rotundata (Ahti) Ahti - Ahti (2000: 77 as )
- Cladonia aleuropoda Vain. - Ahti (2000: 91)
- Cladonia andesita Vain. - Ahti 2000: 93.
- Cladonia bellidiflora (Ach.) Schaer.
- Cladonia borbonica Nyl. - Ahti (2000: 94)
- Cladonia calycantha Delise ex Nyl. - Nylander (1855: 673 nomen nudum), Nylander (1859: 209 Type), Vainio (1894: 203 sub Cladonia calycantha f. foliolosa), Ahti (1983: xx Lectotype in Helsinki, Finland H-NYL), Ahti & Marcelli (1995: 8), Ahti (2000: 96) Note: Lectotype in Helsinki, Finland (H)
Cladonia calycantha f. foliolosa VAINIO mentioned from Peru is Cladonia calycantha DELISE ex NYL. fide Ahti & MARCELLI 1995: 8
- Cladonia cenotea (Ach.) Schaer.
- Cladonia chlorophaea (FLÖRKE) ex SOMMERFELT) SPRENGEL - Ahti (2000: 100)
- Cladonia coccifera (L.) Willd.
Cladonia didyma
- Cladonia fimbriata (L.) Fr.
- Cladonia melanopoda Ahti - Ahti (1997: 7) Note: Type in S
Cladonia peltasta
- Cladonia pocillum (Ach.) O. J. Richard or Gyeln.? HBG
- Cladonia pyxidata (L.) Hoffm.
Cladonia pycnoclada
Cladonia pycnoclada var. flavida
Cladonia sandstedei
- Cladonia scabriuscula (DELISE) NYL.
Cladonia sylvatica
Cladonia verticillaris
- Coccocarpia erythroxyli (Spreng.) SWINSCOW & KROG - Arvidsson (1982: 62)
Coccocarpia fibrillos (HOOK.) DODGE should be deleted from the list of Peruvian lichens fide ARVIDSSON 1982: 92
- Coccocarpia pellita (Ach.) Müll. Arg. emend. R. Sant. - Arvidsson (1982: 78)
- Coenogonium linkii Ehrenb. - Soukop (1965: 31), Kobayasi (1982: 116 as Flabellomyces amazonicus Type in TNS), Kashiwadani (1983: 159)
- Collema flagellatum Degel. - Degelius (1986: 345)
- Ingaderia gracillima (Kremp.) Feige & Lumbsch - Soukup (1965: 32 as Darbishirella gracillima)
- Dictyonema sericeum
- *"Didymella" lenormandii (BORNETT) Henssen - Symb. Bot. Upsal. 18: 113 (1963); GRUBE & HAFELLNER 1990: 339 "Peru, Lechler (UPS, Isotypus!)". BORNET, Ann. Sci. Nat., Bot., 5. sr. 17: 101 (1873) sub Lichenosphaera lenormandii BORNET.
- Dimerella epiphylla (MÜLL. ARG) Malme - Santesson (1952: 395 as Dimerella epiphylla), Soukup (1965: 32 as Dimerella epiphylla)
- Diploschistes cinereocaesius (Ach.) Vain. - Soukup (1965: 31)
- Diploschistes diacapsis (Ach.) Lumbsch - Lumbsch (1989: 169)
- Diploschistes hypoleucus Zahlbr. - Lumbsch (1989: 175)
Dirina approximata subsp. hioramii f. sorediata is Dirina paradoxa subsp. paradoxa f. sorediata (Tehler) Tehler
- Dirina paradoxa subsp. paradoxa f. sorediata (Tehler) Tehler - Tehler (1986: 296)
- Echinoplaca epiphylla Fée - Soukup (1965: 31)
- Echinoplaca pellicula (Müll. Arg.) R. Sant. - Soukup (1965: 31)
- Endocarpon pallidulum (Nyl.) Zahlbr. - Soukup (1965: 28)
- Erioderma wrightii - Soukup (1965: 33)
- Everniastrum arsenei (Hale & M. Wirth) Hale ex Sipman - Sipman (1992: 99)
- Everniastrum billingsii - Sipman (1992: 99)
- Everniastrum cirrhatum (Fr.) Hale ex Sipman - Sipman (1992: 99)
- Everniastrum columbiense (Zahlbr.) Hale ex Sipman - Sipman (1992: 99)
- Everniastrum fragile Sipman - Sipman (1980: xx Protologue Nom. Inval.), Sipman (1986: 240 Type), Sipman (1992: 99)
- Everniastrum limaeforme (Taylor) Hale ex Sipman - Sipman (1992: 99)
- Everniastrum peruvianum (Hale ex W. L. Culb. & C. Culb.) Sipman - Sipman (1992: 99)
- Everniastrum subnepalense (Hale ex W. L. Culb. & C. Culb.) Sipman - Sipman (1992: 99)
- Everniastrum vexans (Zahlbr. ex W. L. Culb. & C. Culb.) Hale ex Sipman - Sipman (1992: 99)
- Everniopsis trulla (Ach.) Nyl. - xxx (Lichenes Selecti Exsiccati Upsalienses: 269), Ramaut et al. (1978: 450)
- Flavocetraria cucullata (Bellardi) Kärnefelt & A. Thell - Bjerke & Elvebakk (2004: 649)
- Graphina chlorocarpa (Fée) Müll. Arg. - Soukup (1965: 30)
- Gyalideopsis cochlearifer Lücking & Sérus. - Lücking & Sérusiaux (1998: 549)
- Gyalectidium filicinum Müll. Arg. - Santesson (1952: 355), Soukup (1965: 31)
Gyrophora cylindira is Umbilicaria cylindrica
Gyrophora dichroa
Gyrophora haplocarpa is Umbilicaria haplocarpa
- Hyperphyscia syncolla (Tuck.) Kalb - Rambold et al. (1994: 33)
- Hypotrachyna andensis Hale - Hale (1975: 23 Type in London, Great Britain BM)
- Hypotrachyna chicitae (Hale) Hale - Hale (1971: 31)
- Hypotrachyna longiloba (H. Magn.) Hale - HBG
- Ingaderia gracillima (Kremp.) Feige & Lumbsch - Krempelhuber (1876: 442 as Roccella gracillima Type), Feige & Lumbsch (1993: 386)
- Josefpoeltia boliviensis Kondratyuk & Kärnefelt - Kondratyuk & Kärnefelt (1997: 23 Type in MIN)
- Josefpoeltia peruviensis KONDR. & Kärn. - Kunkel 3442 in (HBG)
Lecanora castaniza
- Lecanora garovaglioi - Feuerer 2169 in (HBG)
- Lecanora leuckertiana Zedda - Flakus et al. (2006: 210)
Lecanora rubina
- Lecidea standaerti - Soukup (1965: 35)
- Lecidea piperis - Soukup (1965: 35)
- Lecidella chodatii (G. Samp.) Knoph & Leuckert - Knoph & Leuckert (1994: 475)
- Lecidella stigmatea (Ach.) Hertel & Leuckert - Hertel (1989: 226)
- Lepraria cacumina (A. Massal.) Kümmerling - Kümmerling
- Lepraria ecorticata (J. R. Laundon) Kukwa - Flakus & Kukwa (2007: 466)
- Lepraria impossibilis Sipman - Flakus & Kukwa (2007: 467)
- Lepraria sipmaniana (Kümmerling & Leuckert) Kukwa - Flakus & Kukwa (2007: 470)
- Lepraria vouauxii (Hue) R. C. Harris - Flakus & Kukwa (2007: 471)
- Leproloma vouauxii (Hue) J. R. Laundon - Kümmerling
- Leptogium adpressum NYL. - Soukup (1965: 31)
- Leptogium bourghesii (Lightf.) MONT. - Soukup (1965: 31)
- Leptogium bullatum var. vesiculosum TUCK. - Herrera (1930: 35), Soukup (1965: 31)
- Leptogium chloromelum (SW.) NYL. - Soukup (1965: 31)
- Leptogium menziesii (Ach.) Mont. - Soukup (1965: 32)
- Leptogium phyllocarpum (Pers.) NYL. - Soukup (1965: 32)
- Leptogium phyllocarpum var. insidiosum Nyl. - Herrera (1930: 35), Soukup (1965: 32)
- Leptogium phyllocarpum var. macrocarpum Nyl. - Soukup (1965: 33)
- Leptogium reticulatum Mont. - Soukup (1965: 33)
- Leptogium tremelloides var. impressopunctatum - Soukup (1965: 33)
- Lichenosphaeria lenormandi BORN. - Soukup (1965: 31)
- Lobaria crenulata (HOOK.) Trevis. - Soukup (1965: 33)
Lobaria disecta - Soukup (1965: 33)
Lobaria dissecta var. casarettiana - Herrera (1930: 35), Soukup (1965: 33)
Lobaria erosa - Soukup (1965: 33)
- Lobaria pallida (HOOK. in KUNTH) Trevis. - Soukup (1965: 33)
- Lobaria peltigera (DELISE) Vain. - Soukup (1965: 33)
Lobiona albomarginata is Toninia auriculata Timdal
Lopadium flammeum - Soukup (1965: 35)
- Mazosia rotula (MONT.) A. Massal. - Soukup (1965: 30)
- Melanohalea peruviana Essl. - Esslinger (2012: 322 Type in Uppsala, Sweden UPS)
- Ochrolechia subtartarea
- Omphalodium pisacomense - Nash et al. (1990: 356)
- Opegrapha allorgei de Lesd. - Soukup (1965: 30)
- Opegrapha prosodea Ach. var. quassiaecola (Fée) Vain. - Soukup (1965: 30)
- Oropogon americanus - Sipman (1992: 99)
- Oropogon atranorinus - Sipman (1992: 99)
- Oropogon barbaticus - Sipman (1992: 99)
- Oropogon bicolor - Sipman (1992: 99)
- Oropogon diffractaicus - Sipman (1992: 99)
- Oropogon loxensis (Fée) Th. Fr. - Sipman (1992: 99)
- Oropogon sperlingii - Sipman (1992: 99)
- Pannaria mariana (Fr.) Müll. Arg. - Soukup (1965: 33)
- Parmelia americana
- Parmelia cervicornis
- Parmelia cetrata
- Parmelia cetrata var. corniculata
- Parmelia cirrhata
- Parmelia chilensis
- Parmelia confusa
- Parmelia conspersa is Xanthoparmelia conspersa
- Parmelia coralloidea
- Parmelia cordillerana is Xanthoparmelia cordillerana (Gyelnik) Hale
- Parmelia cristifera
- Parmelia dilatata
- Parmelia densirhizinata
- Parmelia denudata
- Parmelia flavicans
- Parmelia furfuracea
- Parmelia kamtschadalis
- Parmelia kamtschadalis var. americana
- Parmelia kamtschadalis f. insidiosa
- Parmelia kernstockii
- Parmelia laevigata
- Parmelia latissima
- Parmelia mauriensia
- Parmelia melanothrix
- Parmelia myelochroa
- Parmelia olivaria
- Parmelia olivetorum
- Parmelia omphalodes (L.) Ach. -
- Parmelia perforata
- Parmelia perforata f. sorediifera
- Parmelia perlata
- Parmelia perlata var. cinchonarum
- Parmelia perlucida
- Parmelia peruviana NYL.
- Parmelia purpuracea
- Parmelia reducta
- Parmelia saxatilis
- Parmelia silvatica
- Parmelia singularis Hale - Hale (1974: 274 Protologue) Type in Washington, USA (US)
- Parmelia subsumpta
- Parmelia sulphurata
- Parmelia tinctorum
- Parmelia tricotera
- Parmelia zollingeri
- Parmotrema aberrans (Vain.) Canêz & Marcelli - xxx (xx: xx as Parmelia aberrans)
- Peltigera austroamericana Zahlbr. - Soukup (1965: 35)
- Peltigera canina (L.) Willd. - Soukup (1965: 35)
Peltigera canina f. spongiosa Tuck. - Soukup (1965: 35)
- Peltigera laciniata (Merr. ex Riddle) Gyeln. - xx (xx: xx as Peltigera canina f. laciniata)
Peltigera membranacea f. melanoloma - Soukup (1965: 35)
- Peltigera rufescens (WEISS) HUMB. - Soukup (1965: 35)
- Phaeophyscia chloantha (Ach.) Moberg - Moberg (1993: 282)
- Phaeophyscia endococcinodes (Poelt) Essl. - Moberg (1993: 282)
- Phaeophyscia hirsuta (Mereschk.) Essl. - Moberg (1993: 283)
- Phaeophyscia hispidula (Ach.) Essl. - Moberg (1993: 283)
- Phaeophyscia sciastra (Ach.) Moberg - Moberg (1993: 284)
- Phyllobathelium epiphyllum (Müll. Arg.) Müll. Arg. - Soukup (1965: 29)
Phyllophiale alba
Phyllopsora parvifolia var. corallina
- Physcia clementiana
- Placidium analogicum (Breuss) Breuss - Breuss (1993: 20 as Catapyrenium analogicum Type in S), Breuss (1996: 38)
Placodium diffracto-radiatum B. de Lesd. - B. de Lesd. (1914: 82 Type)
- Placomaronea candelarioides Räs. - Osorio (1974: 463)
- Porina epiphylla (Fée) Fée - Soukup (1965: 28)
- Porina papillifera (Stirt.) Schilling - Soukup (1965: 28)
- Pseudocyphellaria arvidssonii D. Galloway - Galloway & Arvidsson (1990: 113)
- Pseudocyphellaria aurata - Soukup (1965: 33 sub Sticta aurata)
- Psiloparmelia denotata Elix & Nash - Elix & Nash (1992: 382 Type in Stockholm, Sweden S)
- Psiloparmelia dichotoma Elix & Nash - Elix & Nash (1992: 384 Type in Tsukuba, Japan TNS)
- Psiloparmelia distincta (Nyl.) Hale - Gyelnik (1931: 281 sub Parmelia bouly de lesdainii), Elix & Nash (1992: 384)
- Psiloparmelia flavobrunnea (Müll. Arg.) Elix & Nash - Müller Argau (1891: 379 sub Parmelia flavobrunnea), Hale (1974: 487 sub Xanthoparmelia flavobrunnea), Elix & Nash (1992: 386)
- Psiloparmelia norstictica Elix & Nash - Elix & Nash (1992: 388)
- Psiloparmelia subcrustosa Elix & Nash - Elix & Nash (1992: 390 Type in Hamburg, Germany HBG)
- Psora vallesiaca (Schaer.) Timdal - HBG
- Punctelia borreri (Sm.) Krog - Feuerer 2147 in HBG
- Pyxine coccoes
- Ramalina asperula Kremp. - Kashiwadani (1987: 130 Type in Munich, Germany M)
- Ramalina celastri (Spreng.) Krog & Swinscow - Kashiwadani (1987: 130)
- Ramalina cochlearis Zahlbr. - Kashiwadani (1988: 125)
Ramalina continentalis
Ramalina ceruchis
Ramalina continentalis
- Ramalina disparata Krog & Swinscow - Kashiwadani (1987: 132)
- Ramalina dissecta Kashiw. - Kashiwadani (1988: 125 Type in TNS)
Ramalina farinacea
- Ramalina fasciata Kremp. - Kashiwadani (1987: 133 sub Alectoria tuberculosa)
Ramalina flaccescens
Ramalina fraxinea
Ramalina fraxinea var. ampliata
Ramalina gracilis
- Ramalina grumosa Kashiwadani - Kashiwadani (1987: 134)
- Ramalina incana Kashiwadani - Kashiwadani (1987: 135 Type in TNS)
- Ramalina macrospora Kashiwadani - Kashiwadani (1987: 135 Type in TNS)
D i s t r i b u t i o n: - Known only from the type locality in the "Selva Alta" in 1500 m. Endemic.
Ramalina membranacea
- Ramalina patelliformis Kashiwadani - Kashiwadani (1987: 136 Type in Tsukuba, Japan TNS)
D i s t r i b u t i o n: - This species has been collected only from the two localities in Peru, where it grows on twigs of shrubs in open fields at elevations between 1300 and 1500 m. Endemic.
- Ramalina peruviana Ach. - Acharius (xx: xx Type in Helsinki, Finland H-ACH), Kashiwadani (1987: 136)
Ramalina pollinaria
Ramalina sancti-angelii
- Ramalina subpollinaria Nyl. - Kashiwadani (1987: 137)
- Ramalina tucumanensis Räsänen - Kashiwadani (1987: 138)
- Ramalina turgida Kremp. - Kashiwadani 1987: 138.
D i s t r i b u t i o n: - Endemic. Coastal loma near Lima.
- Reinkella lirellina Darbish. - Soukup (1965: 30)
- Rhizocarpon geographicum (L.) DC. - Soukup (1965: 35)
- Rhizocarpon superficiale - Geyer et al. (1984: 53)
- Rimeliella recipienda (Nyl.) Kurok.
- Roccella babingtonii Mont. - Follmann et al. (1994: 346)
- Roccella difficilis Darb. - Soukup (1965: 31)
- Roccella gracilis Bory - Krempelhuber (1877: 442 as Roccella montagnei var. peruensis Protologue), Darbishire (1898: 49 as Roccella difficilis), Tehler et al. (2009: 310)
- Roccella peruensis (Kremp.) Darb. - Soukup (1965: 31)
- Roccella portentosa Mont. - Soukup (1965: 31)
- Roccellaria intricata (MONT.) DARBISH. - Soukup (1965: 30)
- Siphula decumbens Nyl. - Kantvilas (1998: 125)
- Siphula pteruloides Nyl. - Nylander (1859: 211 Type in Helsinki, Finland H-NYL)
- Sphaerophorus compressus (Ach.) Körb. - Soukup (1965: 29)
- Stereocaulon albicans
- Stereocaulon alpinum - Sipman (1992: 100)
- Stereocaulon atlanticum - Sipman (1992: 100)
- Stereocaulon claviceps - Sipman (1992: 100)
- Stereocaulon crambidiocephalum - Sipman (1992: 100)
- Stereocaulon delisei - Sipman (1992: 100)
- Stereocaulon denudatum
- Stereocaulon glareosum - Sipman (1992: 100)
- Stereocaulon macrocarpum
- Stereocaulon meyeri - Sipman (1992: 100)
- Stereocaulon microcarpum Müll. Arg. - Sipman (1992: 100)
- Stereocaulon myriocarpum
- Stereocaulon pachycephalum - Sipman (1992: 100)
- Stereocaulon pityrizans - Sipman (1992: 100)
- Stereocaulon pomiferum - Sipman (1992: 100)
- Stereocaulon proximum
- Stereocaulon proximum var. compressum
- Stereocaulon proximum var. sorediatum
- Stereocaulon ramulosum
- Stereocaulon ramulosum - Sipman (1992: 100)
- Stereocaulon ramulosum var. sublecannoreum
- Stereocaulon strictum - Sipman (1992: 100)
- Stereocaulon subgracilescens
- Stereocaulon tomentosum - Sipman (1992: 100)
- Stereocaulon verruciferum - Sipman (1992: 100)
- Stereocaulon vesuvianum - Sipman (1992: 100)
Sticta aurata is Pseudocyphellaria aurata
Sticta aurora - Soukup (1965: 34)
- Sticta beauvoisii Delise
Sticta chiarinii ist wahrscheinlich ...
Sticta damaecornis - Soukup (1965: 34)
Sticta exasperata - Soukup (1965: 34)
Sticta flotoviana - Soukup (1965: 34)
Sticta fuliginosa - Soukup (1965: 34)
Sticta humboldtii - Soukup (1965: 34)
Sticta laciniata - Soukup (1965: 34)
Sticta lenormandi - Soukup (1965: 34)
Sticta macrophylla - Soukup (1965: 34)
Sticta platyphylla - Soukup (1965: 34)
Sticta sinuosa - Soukup (1965: 34)
- Sticta sylvatica (HUDSON) Ach. - Soukup (1965: 34)
Sticta tomentosa - Soukup (1965: 34)
- Sticta weigelii (Ach.) Vain. - Herrera (1930: 35), Soukop
Sticta weigelii var. peruviana - Soukup (1965: 34)
- Strigula complanata Mont. - Soukup (1965: 29)
- Strigula elegans (Fée) Müll. Arg. - Soukup (1965: 29)
- Strigula nemathora Mont. - Soukup (1965: 29)
- Strigula nemathora var. pulchella (Müll. Arg.) R. Sant. - Soukup (1965: 29)
- Strigula nitidula Mont. - Soukup (1965: 29)
- Strigula schizospora R. Sant. - Soukup (1965: 29)
- Teloschistes chrysophthalmus (L.) Th. Fr.
- Teloschistes flavicans (Sw.) Norm.
- Teloschistes hosseusianus Gyelnik
- Teloschistes peruensis (Ach.) Thomson - Thomson & Iltis (1968: 31)
- Teloschistes stellatus (Meyen & Flot.) Müll. Arg. - Feuerer (HBG: xxx)
Teloschistes villosus
- Thamnolia subuliformis (Ehrh.) Culb.
- Thamnolia vermicularis (SW.) Schaer. - Soukup (1965: 31)
- Toninia auriculata Timdal - Kilias & Schneider (1978: 27 sub Lobiona albomarginata), Timdal (1991: 44 Type in Graz, Austria GZU)
- Toninia hosseusiana Gyeln. - Timdal (1991: 68)
- Tornabenia scutellifera (With.) J. R. Laundon - Nimis & Tretiach (1997: 218)
- Tricharia carnea (Müll. Arg.) R. Sant. - Soukup (1965: 32)
- Trichothelium annulatum (KARST.) R. Sant. - Soukup (1965: 29)
- Trichothelium epiphyllum Müll. Arg. - Soukup (1965: 29)
- Trypethelium aeneum (Eschw.) Zahlbr. - HBG
- Umbilicaria africana (Jatta) Krog & Swinscow - predicted
- Umbilicaria aprina Nyl. - Crespo & Sancho (1982: 357)
- Umbilicaria calvescens Nyl. var. subvellea Nyl. - HBG 4368
Umbilicaria cylindrica
- Umbilicaria decussata (Vill.) Zahlbr. - Crespo & Sancho (1982: 359)
- Umbilicaria krempelhuberi Müll. Arg.
- Usnea angulata
- Usnea articulata
- Usnea cladoblephara
- Usnea florida
- Usnea florida var. strigosa
- Usnea gonoides
- Usnea granadensis
- Usnea laevis
- Usnea melaxantha
- Usnea orthoclada
- Usnea rubigena
- Usnea scaberrima
- Usnea wirthii Clerc - Clerc (1997: 214)
- Xanthomendoza mendozae (Räsänen) S. Kondr. & Kärnefelt - Kondratyuk & Kärnefelt (1997: 28)
- Xanthoparmelia australasica D. Gall. - Elix et al. (1987: 292)
- Xanthoparmelia brunella (Essl.) xxx - Esslinger (1986: 297 as Neofuscelia brunella)
- Xanthoparmelia cordillerana (Gyeln.) Hale - Gyelnik (1938: sub Parmelia cordillerana), Hale (1990: 95) Type in the United Kingdom (BP)
- Xanthoparmelia fissurina (Zahlbr.) xxx - Esslinger (1986: 297 as Neofuscelia fissurina)
- Xanthoparmelia flavescentireagens (Gyeln.) D. Gall. - Elix et al. (1987: 292)
- Xanthoparmelia peruviensis Hale - Hale (1985a: 284) Type in London, United Kingdom (BM)
- Xanthopeltis rupicola R. Sant. - Crespo & Sancho (1982: 359)
- Xanthoria candelaria (L.) Th. Fr.
- Xanthoria gallowayii S. Kondr. & Kärnefelt - Kondratyuk & Kärnefelt (1997: 28)
- Xanthoria parietina (L.) Th. Fr.