Gaeumannomyces, Galerina, Galeropsis, Galiella, Galzinia, Gamundia, Ganoderma, Gastrosporium, Gauteria, Geastrum, Gelasinospora, Gemmamyces, Genea, Geoglossum, Geopora, Geopyxis, Gerronema, Gibbera, Gibberella, Gibellina, Glischroderma, Gloeocystidiellum, Gloeophyllum, Gloeoporus, Gloeotinia, Gloiodon, Glomerella, Gloniella, Gloniopsis, Glonium, Gnomonia, Gnomoniella, Godronia, Gomphidius, Gomphus, Gorgoniceps, Graddonia, Grahamiella, Grandinia, Granulobasidium, Gremmeniella, Grifola, Griphosphaeria, Grovesiella, Guepiniopsis, Gymnomyces, Gymnopilus, Gymnosporangium, Gyrocratera, Gyrodon, Gyromitra, Gyrophragmium, Gyroporus