Between brackets is the number of accepted species
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- Biota
- Kingdom Animalia
- Kingdom Archaea
- Kingdom Bacteria
- Kingdom Chromista
- Kingdom Fungi
- Phylum Aphelida accepted as Aphelidiomycota
- Phylum Aphelidiomycota
- Phylum Ascomycota
- Class Archaeorhizomycetes
- Class Arthoniomycetes
- Class Ascomycetes
- Class Ascomycota incertae sedis
- Class Ascomycotina incertae sedis
- Class Dothideomycetes
- Class Eurotiomycetes
- Class Geoglossomycetes
- Class Laboulbeniomycetes
- Class Lecanoromycetes
- Order Acarosporales
- Order Agyriales
- Order Baeomycetales
- Order Candelariales
- Order Lecanorales
- Family Alectoriaceae accepted as Parmeliaceae Zenker, 1827
- Family Anziaceae accepted as Parmeliaceae Zenker, 1827
- Family Aphanopsidaceae
- Family Arctomiaceae
- Family Bacidiaceae accepted as Ramalinaceae C.A. Agardh, 1821
- Family Biatorellaceae
- Family Brigantiaceae accepted as Brigantiaeaceae
- Family Brigantiaeaceae
- Family Byssolomataceae Zahlbruckner, 1926
- Family Calycidiaceae
- Family Carbonicolaceae M. Bendiksby & E. Timdal, 2013
- Family Cladoniaceae
- Family Crocyniaceae
- Family Dactylosporaceae
- Family Ectolechiaceae
- Family Gypsoplacaceae
- Family Haematommataceae
- Family Helocarpaceae
- Family Heterodeaceae accepted as Cladoniaceae
- Family Hymeneliaceae G.W. Körber, 1855
- Family Lecanoraceae G.W. Körber, 1855
- Family Lecanorales incertae sedis
- Family Malmideaceae K. Kalb, E. Rivas Plata & H.T. Lumbsch in Kalb, Rivas Plata, Lücking & Lumbsch, 2011
- Family Megalariaceae
- Family Miltideaceae
- Family Mycoblastaceae
- Family Parmeliaceae Zenker, 1827
- Genus Ahtia M.J. Lai, 1980 accepted as Cetrariopsis S. Kurokawa, 1980
- Genus Ahtiana T. Goward, 1986
- Genus Alectoria Acharius, 1810
- Genus Alectoria Link, 1833 accepted as Usnea Dillenius ex Adanson, 1763
- Genus Alectoriomyces Ciferri & Tomaselli, 1953 accepted as Alectoria Acharius, 1810
- Genus Allantoparmelia (Vainio) T.L. Esslinger, 1978
- Genus Allocetraria S. Kurokawa & M.J. Lai, 1991
- Genus Almbornia T.L. Esslinger, 1981
- Genus Anzia Stizenberger, 1861
- Genus Arctocetraria I. Kärnefelt & A. Thell in I. Kärnefelt et al., 1993
- Genus Arctoparmelia M.E. Hale Jr., 1986
- Genus Asahinea W.L. Culberson & C.F. Culberson, 1965
- Genus Aspidelia J. Stirton, 1900 accepted as Parmelia Acharius, 1803
- Genus Atestia Trevisan, 1861 accepted as Oropogon Th. Fries, 1861
- Genus Austroparmelina A. Crespo, P.K. Divakar & J.A. Elix, 2009
- Genus Brodoa T. Goward, 1987
- Genus Bryocaulon I. Kärnefelt, 1986
- Genus Bryopogon Th. Fries, 1860 accepted as Bryoria I.M. Brodo & D.L. Hawksworth, 1977
- Genus Bryopogon Link, 1833 accepted as Alectoria Acharius, 1810
- Genus Bryoria I.M. Brodo & D.L. Hawksworth, 1977
- Genus Bulborrhizina S. Kurokawa, 1994
- Genus Bulbothricella V. Marcano, S. Mohali & A. Morales, 1996
- Genus Bulbothrix M.E. Hale, 1974
- Genus Bulbotricella V. Marcano, Mohali & A. Morales, 1996 accepted as Bulbothrix M.E. Hale, 1974
- Genus Canomaculina J.A. Elix & M.E. Hale, 1987
- Genus Canoparmelia J.A. Elix & M.E. Hale in J.A. Elix et al., 1986
- Genus Cavernularia Degelius, 1937
- Genus Ceratocladia Schwendener, 1860 accepted as Alectoria Acharius, 1810
- Genus Ceratophyllum M. Choisy, 1951 accepted as Hypogymnia (Nylander) Nylander, 1896
- Genus Ceteraria Acharius, 1809 accepted as Cetraria Acharius, 1803
- Genus Cetraria Acharius, 1803
- Genus Cetrariastrum H.J.M. Sipman, 1980
- Genus Cetrariella Kärnefelt & A. Thell in Kärnfelt et al., 1993
- Genus Cetrariomyces E.A. Thomas, 1939 accepted as Cetraria Acharius, 1803
- Genus Cetrariopsis S. Kurokawa, 1980
- Genus Cetrelia W.L. Culberson & C.F. Culberson, 1968
- Genus Cetreliopsis M.J. Lai, 1980
- Genus Chlorea Nylander, 1855 accepted as Letharia (Th. Fries) A. Zahlbruckner, 1892
- Genus Chondropsis Nylander, 1863
- Genus Chondrospora A. Massalongo, 1860 accepted as Anzia Stizenberger, 1861
- Genus Coelocaulon Link, 1833 accepted as Cetraria Acharius, 1803
- Genus Coelopogon F.A. Brusse & I. Kärnefelt, 1991
- Genus Concamerella W.L. Culberson & C.F. Culberson, 1981
- Genus Cornicularia (J.C.D. Schreber) G.F. Hoffmann, 1792
- Genus Cornicularia Schaerer, 1850 accepted as Alectoria Acharius, 1810
- Genus Coronoplectrum F.A. Brusse, 1987
- Genus Crespoa (D. Hawksworth) J.C. Lendemer & B.P. Hodkinson, 2012
- Genus Dactylina Nylander, 1860
- Genus Davidgallowaya A. Aptroot, 2007
- Genus Dolichousnea (Y. Ohmura) Articus, 2004
- Genus Dufoureomyces Ciferri & Tomaselli, 1953 accepted as Dactylina Nylander, 1860
- Genus Emodomelanelia P.K. Divakar & A. Crespo, 2010
- Genus Esslingeriana M.E. Hale & M.J. Lai in M.J. Lai, 1980
- Genus Eualectoria (Th. Fries) Gyelnik, 1934 accepted as Alectoria Acharius, 1810
- Genus Eumitria J. Stirton, 1881 accepted as Usnea Dillenius ex Adanson, 1763
- Genus Evernia Acharius, 1810
- Genus Everniastrum M.E. Hale ex Sipman, 1986
- Genus Everniomyces Ciferri & Tomaselli, 1953 accepted as Evernia Acharius, 1810
- Genus Everniopsis Nylander, 1860
- Genus Flavocetraria I. Kärnefelt & A. Thell in I. Kärnefelt et al., 1994
- Genus Flavoparmelia M.E. Hale Jr., 1986
- Genus Flavopunctelia (Krog) M.E. Hale, 1984
- Genus Foraminella S.L.F. Meyer, 1982 accepted as Parmeliopsis (Nylander ex E. Stizenberger) Nylander, 1866
- Genus Geissodea Ventenat, 1799 accepted as Cetraria Acharius, 1803
- Genus Gowardia P. Halonen, L. Myllys, S. Velmala & H. Hyvärinen, 2009
- Genus Hendrickxia P.A. Duvigneaud, 1942 accepted as Everniopsis Nylander, 1860
- Genus Himantormia I.M. Lamb, 1964
- Genus Hologymnia Nylander, 1900 accepted as Evernia Acharius, 1810
- Genus Hypogymnia (Nylander) Nylander, 1896
- Genus Hypotrachyna (E. Vainio) M.E. Hale, 1974
- Genus Imshaugia S.L.F. Meyer, 1985
- Genus Kaernefeltia A. Thell & T. Goward, 1996
- Genus Karoowia M.E. Hale, 1989
- Genus Letharia (Th. Fries) A. Zahlbruckner, 1892
- Genus Lethariella (J. Motyka) H. Krog, 1976
- Genus Lichen Linnaeus, 1753
- Genus Masonhalea I. Kärnefelt, 1977
- Genus Melanelia T.L. Esslinger, 1978
- Genus Melanelixia O. Blanco, A. Crespo, Divakar, Esslinger, D. Hawksworth & Lumbsch
- Genus Melanohalea O. Blanco, A. Crespo, Divakar, Esslinger, D. Hawksworth & Lumbsch, 2004
- Genus Menegazzia A. Massalongo, 1854
- Genus Montanelia P.K. Divakar, A. Crespo, M. Wedin & T.L. Esslinger in Divakar, Del-Prado, Lumbsch, Wedin, Esslinger, Leavitt & Crespo, 2012
- Genus Myelochroa (Y. Asahina) J.A. Elix & M.E. Hale, 1987
- Genus Namakwa M.E. Hale, 1988
- Genus Neofuscelia T.L. Esslinger, 1978
- Genus Neopsoromopsis V. Köfaragó-Gyelnik, 1940
- Genus Nephromopsis J. Müller Arg., 1891
- Species Nephromopsis asahinae (M. Satô) Räsänen, 1952 accepted as Cetreliopsis asahinae (M. Satô) Randlane & A. Thell, 1995
- Species Nephromopsis endoxanthoides (D.D. Awasthi) Randlane & Saag, 1992 accepted as Cetreliopsis endoxanthoides (D.D. Awasthi) Randlane & Saag, 1995
- Species Nephromopsis laureri (Kremp.) Kurok., 1991 accepted as Tuckneraria laureri (Kremp.) Randlane & A. Thell, 1994
- Species Nephromopsis laxa (Zahlbr.) M. Satô, 1938 accepted as Tuckneraria laxa (Zahlbr.) Randlane & A. Thell, 1994
- Species Nephromopsis pseudocomplicata (Asahina) M.J. Lai, 1980 accepted as Tuckneraria pseudocomplicata (Asahina) Randlane & Saag, 1994
- Species Nephromopsis rhytidocarpa (Mont. & Bosch) Zahlbr., 1952 accepted as Cetreliopsis rhytidocarpa (Mont. & Bosch) Randlane & Saag, 1980
- Genus Nesolechia A. Massalongo, 1856 accepted as Phacopsis Tulasne, 1852
- Genus Neuropogon C.G.D. Nees von Esenbeck & Flotow, 1835 accepted as Usnea Dillenius ex Adanson, 1763
- Genus Nimisia I. Kärnefelt & A. Thell, 1993
- Genus Nipponoparmelia (S. Kurokawa) K.H. Moon, Y. Ohmura & H. Kashiwadani, 2010
- Genus Nodobryoria R.S. Common & I.M. Brodo, 1995
- Genus Notoparmelia A. Crespo, Z. Ferencova & P.K. Divakar in Ferencova, Cubas, Divakar, Molina & Crespo, 2014
- Genus Nylanderaria O. Kuntze, 1891 accepted as Letharia (Th. Fries) A. Zahlbruckner, 1892
- Genus Omphalodiella A. Henssen, 1991
- Genus Omphalodium J. Meyen & Flotow, 1843
- Genus Omphalora T.H. Nash & J. Hafellner in T.H. Nash et al., 1990
- Genus Oropogon Th. Fries, 1861
- Genus Pannoparmelia (J. Müller Arg.) O.V. Darbishire, 1912
- Genus Paraparmelia J.A. Elix & J. Johnston in J.A. Elix et al., 1986
- Genus Parmelaria D.D. Awasthi, 1987
- Genus Parmelia Acharius, 1803
- Genus Parmelina M.E. Hale, 1974
- Genus Parmelinella J.A. Elix & M.E. Hale, 1987
- Genus Parmelinopsis J.A. Elix & M.E. Hale, 1987
- Genus Parmeliomyces E.A. Thomas ex Ciferri & Tomaselli, 1953 accepted as Parmelina M.E. Hale, 1974
- Genus Parmeliopsis (Nylander ex E. Stizenberger) Nylander, 1866
- Genus Parmotrema A. Massalongo, 1860
- Genus Parmotremopsis J.A. Elix & M.E. Hale, 1987
- Genus Phacopsis Tulasne, 1852
- Genus Placoparmelia A. Henssen, 1992
- Genus Platisma Hoffmann, 1790 accepted as Cetraria Acharius, 1803
- Genus Platismatia W.L. Culberson & C.F. Culberson, 1968
- Genus Platyphyllum Ventenat, 1799 accepted as Cetraria Acharius, 1803
- Genus Platysma Nylander, 1855
- Genus Pleurosticta Petrak, 1931
- Genus Protoparmelia M. Choisy, 1929
- Genus Protousnea (J. Motyka) H. Krog, 1976
- Genus Pseudephebe M. Choisy, 1930
- Genus Pseudevernia Zopf, 1903
- Genus Pseudocornicularia V. Köfaragó-Gyelnik, 1933 accepted as Cetraria Acharius, 1803
- Genus Pseudoparmelia Lynge, 1914
- Genus Pseudoplacodium Motyka, 1996 accepted as Protoparmelia M. Choisy, 1929
- Genus Psiloparmelia M.E. Hale, 1989
- Genus Psoromella V. Köfaragó-Gyelnik, 1940
- Genus Punctelia H. Krog, 1982
- Genus Relicina (M.E. Hale & S. Kurokawa) M.E. Hale, 1974
- Genus Relicinopsis J.A. Elix & D. Verdon in J.A. Elix, 1986
- Genus Remototrachyna P.K. Divakar & A. Crespo, 2010
- Genus Rhytidocaulon Nylander ex A.A. Elenkin, 1916 accepted as Letharia (Th. Fries) A. Zahlbruckner, 1892
- Genus Rimelia M.E. Hale & A. Fletcher, 1990
- Genus Rimeliella S. Kurokawa, 1991 accepted as Canomaculina J.A. Elix & M.E. Hale, 1987
- Genus Setaria Acharius ex A. Michaux, 1803 accepted as Bryoria I.M. Brodo & D.L. Hawksworth, 1977
- Genus Squamaria G.F. Hoffmann, 1789 accepted as Cetraria Acharius, 1803
- Genus Sulcaria J. Bystrek, 1971
- Genus Tuckermanella Esslinger, 2003
- Genus Tuckermannopsis V. Köfaragó-Gyelnik, 1933
- Genus Tuckermanopsis Gyelnik, 1933
- Genus Tuckneraria T. Randlane & A. Thell in T. Randlane, A. Saag, A. Thell & J. Kärnefelt, 1994
- Genus Usnea Dillenius ex Adanson, 1763
- Genus Usneomyces E.A. Thomas ex Ciferri & Tomaselli, 1953 accepted as Usnea Dillenius ex Adanson, 1763
- Genus Usnocetraria M.J. Lai & J.C. Wei, 2007
- Genus Vulpicida J.E. Mattsson & M.J. Lai, 1993
- Genus Xanthomaculina M.E. Hale Jr., 1985
- Genus Xanthoparmelia (E. Vainio) M.E. Hale, 1974
- Family Pilocarpaceae Zahlbruckner, 1905
- Family Ramalinaceae C.A. Agardh, 1821
- Family Sphaerophoraceae
- Family Stereocaulaceae
- Family Tephromelataceae
- Family Vezdaeaceae
- Order Lecanoromycetes incertae sedis
- Order Lecanoromycetidae incertae sedis
- Order Lecideales
- Order Ostropales
- Order Ostropomycetidae incertae sedis
- Order Peltigerales
- Order Pertusariales
- Order Rhizocarpales
- Order Sarrameanales
- Order Teloschistales
- Order Umbilicariales
- Class Leotiomycetes
- Class Lichinomycetes
- Class Neolectomycetes
- Class Orbiliomycetes
- Class Pezizomycetes
- Class Pneumocystidomycetes
- Class Saccharomycetes
- Class Sareomycetes
- Class Schizosaccharomycetes
- Class Sordariomycetes
- Class Taphrinomycetes
- Class Xylonomycetes
- Phylum Basidiobolomycota accepted as Zygomycota
- Phylum Basidiomycota
- Phylum Blastocladiomycota
- Phylum Calcarisporiellomycota accepted as Zygomycota
- Phylum Caulochytriomycota accepted as Chytridiomycota
- Phylum Chytridiomycota
- Phylum Entomophthoromycota
- Phylum Fungi (awaiting allocation)
- Phylum Fungi incertae sedis
- Phylum Glomeromycota
- Phylum Kickxellomycota accepted as Zygomycota
- Phylum Monoblepharomycota accepted as Chytridiomycota
- Phylum Mortierellomycota accepted as Zygomycota
- Phylum Mucoromycota accepted as Zygomycota
- Phylum Nematophyta †
- Phylum Neocallimastigomycota accepted as Chytridiomycota
- Phylum Olpidiomycota accepted as Chytridiomycota
- Phylum Rozellomycota
- Phylum Zoopagomycota accepted as Zygomycota
- Phylum Zygomycota
- Genus Celluloxylon J.W. Dawson, 1881 † accepted as Prototaxites J.W. Dawson, 1859 †
- Genus Mucorites Meschinelli, 1898 † accepted as Mucorites Meschinelli ex Lindau, 1900 †
- Genus Mucorites Meschinelli ex Lindau, 1900 †
- Genus Mycelites W. Roux, 1887 †
- Genus Mycobystrovia Goujet & Locquin, 1979 †
- Genus Nematophycus Carruthers, 1872 † accepted as Prototaxites J.W. Dawson, 1859 †
- Genus Nematophyton J.W. Dawson, 1888 † accepted as Prototaxites J.W. Dawson, 1859 †
- Genus Ourasphaira C.C. Loron, R.H. Rainbird, E.C. Turner, J.W. Greenman & E.J. Javaux, 2019 †
- Genus Petsamomyces M.Y. Belova, 2006 †
- Genus Pilula S.D. Harker & W.A.S. Sarjeant in Harker et al., 1990 † accepted as Pilula S.D. Harker & W.A.S. Sarjeant ex S.D. Harker & W.A.S. Sarjeant, 1992 †
- Genus Pilula S.D. Harker & W.A.S. Sarjeant ex S.D. Harker & W.A.S. Sarjeant, 1992 †
- Genus Polycellaria H.D. Pflug, 1965 †
- Genus Prototaxites J.W. Dawson, 1859 †
- Genus Rhyniomycelium M. Krings & C.J. Harper, 2023 †
- Kingdom Plantae
- Kingdom Protista accepted as Protozoa
- Kingdom Protozoa
- Kingdom Viruses
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