Between brackets is the number of accepted species
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2 Shows the number of accepted species within the taxon
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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
- Class Leotiomycetes
- Order Cyttariales
- Order Erysiphales
- Order Helotiales
- Family Amicodiscaceae A.H. Ekanayaka & K.D. Hyde in Ekanayaka, Hyde, Gentekaki, McKenzie, Zhao, Bulgakov & Camporesi, 2019
- Family Arachnopezizaceae T. Hosoya, J.G. Han & H.O. Baral in Baral, 2015
- Family Ascocorticiaceae
- Family Bryoglossaceae A.H. Ekanayaka & K.D. Hyde in Ekanayaka, Hyde, Gentekaki, McKenzie, Zhao, Bulgakov & Camporesi, 2019
- Family Chlorociboriaceae H.O. Baral & P.R. Johnston in Baral, 2015
- Family Chlorospleniaceae A.H. Ekanayaka & K.D. Hyde in Ekanayaka, Hyde, Gentekaki, McKenzie, Zhao, Bulgakov & Camporesi, 2019
- Family Dermateaceae
- Family Discinellaceae A.H. Ekanayaka & K.D. Hyde in Ekanayaka, Hyde, Gentekaki, McKenzie, Zhao, Bulgakov & Camporesi, 2019
- Family Excipulaceae accepted as Helotiales incertae sedis
- Family Hamatocanthoscyphaceae A.H. Ekanayaka & K.D. Hyde, 2019
- Family Helotiaceae
- Family Helotiales incertae sedis
- Family Hemiphacidiaceae
- Family Hyaloscyphaceae
- Family Hydrocinaceae A.H. Ekanayaka & K.D. Hyde in Ekanayaka, Hyde, Gentekaki, McKenzie, Zhao, Bulgakov & Camporesi, 2019
- Family Hymenoscyphaceae accepted as Helotiaceae
- Family Loramycetaceae
- Family Mollisiaceae accepted as Helotiales incertae sedis
- Family Moniliaceae accepted as Sclerotiniaceae
- Family Neolauriomycetaceae P.W. Crous in Crous et al., 2018
- Family Patellariopsidaceae A. Karunarathna, E. Camporesi & K.D. Hyde in Karunarathna et al., 2020
- Family Pezizellaceae J. Velenovský, 1934
- Family Phacidiaceae
- Genus Allantophomopsis Petrak, 1925
- Genus Apostrasseria T.R. Nag Raj, 1983
- Genus Ascocoma H.J. Swart, 1987
- Genus Basilocula Bubák, 1914 accepted as Ceuthospora R.K. Greville, 1826
- Genus Ceuthospora R.K. Greville, 1826
- Genus Chionobium A. Iwakiri & Y. Hirooka in Iwakiri et al., 2024
- Genus Coccobolus Wallroth, 1833 accepted as Ceuthospora R.K. Greville, 1826
- Genus Coma Nag Raj & W.B. Kendrick, 1972
- Genus Lophophacidium Lagerberg, 1949
- Genus Melanostroma Corda in J. Sturm, 1829 accepted as Ceuthospora R.K. Greville, 1826
- Genus Neonaumovia Schwarzman, 1959 accepted as Lophophacidium Lagerberg, 1949
- Genus Phacidiostroma F. von Höhnel, 1917 accepted as Phacidium E.M. Fries, 1815
- Genus Phacidites Meschinelli in Meschinelli & Squinabol, 1892 †
- Species Phacidites coronatus (Fr. ex Bleicher & Fliche) Mesch. † accepted as Phacidium coronatum Fr., 1815
- Genus Phacidium E.M. Fries, 1823 accepted as Phacidium E.M. Fries, 1815
- Genus Phacidium E.M. Fries, 1815
- Genus Siroplaconema Petrak, 1922 accepted as Ceuthospora R.K. Greville, 1826
- Family Rhizothyriaceae accepted as Helotiaceae
- Family Rutstroemiaceae
- Family Sclerotiniaceae
- Family Solenopeziaceae A.H. Ekanayaka & K.D. Hyde in Ekanayaka, Hyde, Gentekaki, McKenzie, Zhao, Bulgakov & Camporesi, 2019
- Family Tympanidaceae H.O. Baral & L. Quijada in Baral, 2015
- Family Vandijckellaceae M. Sandoval-Denis in Crous et al., 2017
- Family Vibrisseaceae
- Order Leotiales
- Order Leotiomycetes incertae sedis
- Order Leotiomycetidae incertae sedis
- Order Lichinodiales
- Order Medeolariales
- Order Rhytismatales
- Order Thelebolales
- 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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