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