Clitocybe diatreta 
Clitocybe fragrans 
Clitocybe glacialis 
Clitocybe mitis 
Clitocybe peralbida 
Clitocybe subditopoda 
Clitocybe trulliformis 
clitocybe vibecina 
Clitopilus crispus 
Clitopilus hobsonii 
Cloud ear fungus 
Clouded Agaric 
Club Coral 
Club-foot Clitocybe 
Club-like Tuning Fork 
Clustered coral 
Cobalt Crust 
Cochise's American Caesar 
Coker's Amanita 
Coker's Lavender Staining Amanita 
Coleosporium elephantopodis 
Coleosporium ipomoeae 
Coleosporium vernoniae 
Collared Calostoma