conchifer, Trametes
confluens, Albatrellus
confragosa, Daedaleopsis
confragosa, Tubaria
conica, Hygrocybe
cookei, Collybia
coprophilus, Bolbitius
corrugatus, Cortinarius
corrugatus, Paxillus
corrugis, Lactarius
corticola, Mycena
crenulata, Amanita