Greenfoot Fibrecap 
Grey knight 
Grisette 
Grooved bonnet 
Gumtree Deceiver 
Gunpowder Amanita 
Gymnopilus allantopus 
Gymnopilus bellulus 
Gymnopilus delepis 
Gymnopilus ferruginosus 
Gymnopilus subspectabilis 
Gymnopus confluens 
Gymnopus earleae 
Gymnopus fuscopurpureus 
Gymnopus perforans 
Gymnopus subnudus 
Gymnopus subsulphureus 
Gymnopus villosipes 
Gypsy mushroom 
Hairy Leg Bell 
Hairy Long Stem Marasmius 
Handkea excipuliformis 
Handsome Club 
Hare's Foot Inkcap