Cortinarius sinapicolor 
Cortinarius vanduzerensis 
Cortinarius violaceus 
Cotylidia diaphana 
Cracked Cap Polypore 
Crimped Gill 
Crimson Waxcap 
Crinipellis setipes 
Cross-veined Troop Mushroom 
Crowded White Clitocybe 
Crown-Tipped Coral Fungus 
Crusty Russula 
Cryptic bonnet 
Cryptoporus volvatus 
Crystal Brain Fungus 
Cuphophyllus borealis 
Curry Milkcap 
Curry punk 
Cyathus olla 
Cyclocibe aegerita 
Cyclocybe cylindracea 
Cymatoderma caperatum 
cymatoderma elegans 
Cystoderma aureum