Fungal genera: Gabarnaudia [1 taxon], Gaeumannomyces [260 taxa], Gaillardiella [2 taxa], Galactinia [4 taxa], Galactomyces [120 taxa], Galera [5 taxa], Galerella [1 taxon], Galerina [115 taxa], Galerula [10 taxa], Galiella [5 taxa], Galzinia [5 taxa], Gambleola [6 taxa], Gampsonema [10 taxa], Gangliostilbe [3 taxa], Ganoderma [2097 taxa], Garnaudia [3 taxa], Gastroboletus [2 taxa], Gautieria [8 taxa], Geaster [10 taxa], Geasteropsis [9 taxa], Geastrum [68 taxa], Geastrumia [3 taxa], Gelasinospora [31 taxa], Gelatinosporium [2 taxa], Gelineostroma [1 taxon], Gelopellis [3 taxa], Geminispora [3 taxa], Gemmamyces [1 taxon], Genea [5 taxa], Geniculifera [4 taxa], Geniculodendron [1 taxon], Geniculosporium [10 taxa], Geoglossum [20 taxa], Geomyces [11 taxa], Geopetalum [17 taxa], Geophila [1 taxon], Geopora [9 taxa], Geopyxis [9 taxa], Georgefischeria [4 taxa], Geotrichites [1 taxon], Geotrichum [44 taxa], Gernaudia [2 taxa], Gerronema [80 taxa], Gerwasia [7 taxa], Gibbago [2 taxa], Gibbera [27 taxa], Gibberella [1873 taxa], Gibberidea [2 taxa], Gibellina [4 taxa], Gibellula [37 taxa], Gibellulopsis [1 taxon], Gigaspora [35 taxa], Gilbertella [7 taxa], Gilletiella [1 taxon], Gilmania [4 taxa], Gilmaniella [15 taxa], Giulia [1 taxon], Glabrotheca [1 taxon], Glaxoa [1 taxon], Glaziella [5 taxa], Glenospora [2 taxa], Gliocephalotrichum [9 taxa], Gliocladiopsis [6 taxa], Gliocladium [228 taxa], Gliomastix [32 taxa], Gliophragma [1 taxon], Gliostroma [1 taxon], Globifomes [1 taxon], Globulina [1 taxon], Globulina [1 taxon], Globuliroseum [1 taxon], Gloeocephalus [2 taxa], Gloeocoryneum [21 taxa], Gloeocystidiellum [34 taxa], Gloeocystidium [4 taxa], Gloeodes [12 taxa], Gloeodontia [3 taxa], Gloeohypochnicium [1 taxon], Gloeophyllum [456 taxa], Gloeoporus [109 taxa], Gloeosoma [2 taxa], Gloeosporidiella [3 taxa], Gloeosporidina [1 taxon], Gloeosporium [279 taxa], Gloeotinia [1 taxon], Gloeotrochila [2 taxa], Gloiocephala [10 taxa], Gloiodon [1 taxon], Glomerella [2911 taxa], Glomerulomyces [1 taxon], Glomosporium [3 taxa], Glomus [170 taxa], Gloniella [32 taxa], Gloniopsis [33 taxa], Glonium [84 taxa], Glossodium [20 taxa], Glyphis [77 taxa], Glyphium [7 taxa], Gnomonia [263 taxa], Gnomoniella [39 taxa], Godronia [37 taxa], Godroniopsis [1 taxon], Golovinomyces [6164 taxa], Gomezina [2 taxa], Gomphidius [21 taxa], Gomphillus [2 taxa], Gomphus [4 taxa], Gonapodya [3 taxa], Gonatobotrys [10 taxa], Gonatobotryum [8 taxa], Gonatophragmiella [1 taxon], Gonatophragmium [16 taxa], Gonatorrhodum [1 taxon], Gongronella [8 taxa], Gonytrichum [42 taxa], Goosiella [2 taxa], Goplana [4 taxa], Gorgoniceps [20 taxa], Graddonia [3 taxa], Grahamiella [2 taxa], Grallomyces [43 taxa], Gramasia [1 taxon], Grammothele [28 taxa], Grandigallia [1 taxon], Grandinia [190 taxa], Granmamyces [1 taxon], Graphidastra [12 taxa], Graphina [106 taxa], Graphinella [1 taxon], Graphiola [123 taxa], Graphiothecium [1 taxon], Graphis [711 taxa], Graphium [111 taxa], Graphostroma [8 taxa], Graphyllium [75 taxa], Greeneria [17 taxa], Grifola [18 taxa], Griggsia [3 taxa], Griphosphaeria [3 taxa], Griphosphaerioma [1 taxon], Grosmannia [1 taxon], Grovesia [2 taxa], Guedea [3 taxa], Guepinia [18 taxa], Guepiniopsis [25 taxa], Guignardia [343 taxa], Guttulinopsis [5 taxa], Gyalecta [38 taxa], Gyalectidium [32 taxa], Gyalideopsis [5 taxa], Gymnascella [13 taxa], Gymnoascus [49 taxa], Gymnoconia [2 taxa], Gymnoderma [3 taxa], Gymnoglossum [2 taxa], Gymnographoidea [1 taxon], Gymnomyces [12 taxa], Gymnopaxillus [2 taxa], Gymnopilus [300 taxa], Gymnopuccinia [1 taxon], Gymnopus [129 taxa], Gymnosporangium [763 taxa], Gymnosporium [3 taxa], Gymnoxyphium [3 taxa], Gyoerffyella [5 taxa], Gyrocerus [4 taxa], Gyrocratera [1 taxon], Gyrodon [1 taxon], Gyrodontium [2 taxa], Gyromitra [53 taxa], Gyrophana [7 taxa], Gyrophanopsis [5 taxa], Gyroporus [7 taxa], Gyrostomum [9 taxa], Gyrothrix [253 taxa]