Black bulgar 
Black Knot 
Black Morel 
Black Sooty Mold 
Black Tar Spot 
Black Tooth 
Black Truffle 
Black Trumpets 
Black velvet bolete 
Black Witch's Butter 
Black-Eye Lichen 
Black-footed Marasmus 
Black-footed polypore 
Black-staining Polypore 
Blackening russula 
Blackfoot polypore 
Blackwattle Stump Fungus 
Bleach cup 
Bleached Brittlegill 
Bleeding bonnet 
Bleeding Conifer Crust 
Bleeding fairy helmet 
bleeding oak crust 
Bleeding Rosette