American Orange-Brown Ringless Amanita 
Amethyst Deceiver 
Anemone stinkhorn 
Angel wing 
Angel's bonnet 
Aniseed Cockleshell 
Aniseed Funnel 
Anthracophyllum archeri 
Antrodia Sinuosa 
Antrodia Variiformis 
Armillaria gemina 
Armillaria nabsnona 
Armillaria sinapina 
Armillaria solidipes 
Arrhenia epichysium 
Arrhenia hohensis 
Arrhenia rainierensis 
Artist's Fungus 
Ash Tray Bolete 
Ash-tree bolete 
Ashen knight 
Aspen oyster mushroom 
Asterophora lycoperdoides 
Astraeus morganii