C
- Cortinarius cabrinii – Argentina
- Cortinarius cacaocolor
- Cortinarius cacaocolor
- Cortinarius cacodes – USA (California)
- Cortinarius cadaverolens – France
- Cortinarius caelicolor
- Cortinarius caeruleo-ochrascens – France
- Cortinarius caeruleogriseus – France
- Cortinarius caeruleoëburneus – Australia
- Cortinarius caerulescens – mealy bigfoot webcap
- Cortinarius caerulipes
- Cortinarius caesia – France
- Cortinarius caesibulga – Australia
- Cortinarius caesiellus – USA
- Cortinarius caesiifolius – USA
- Cortinarius caesiifolius
- Cortinarius caesiobrunneus – Finland
- Cortinarius caesiocanescens – Austria
- Cortinarius caesiocyaneus
- Cortinarius caesiocinctus – France
- Cortinarius caesiocortinatus – Austria
- Cortinarius caesioflavescens – France
- Cortinarius caesiogriseus – Austria
- Cortinarius caesiolatens – France
- Cortinarius caesionigrellus – France
- Cortinarius caesiostramenius
- Cortinarius californicus
- Cortinarius callisteus – edible, but deadly look-alikes (C. gentilis)
- Cortinarius calochrous
- Cortinarius calyptratus
- Cortinarius calyptrodermus
- Cortinarius camphoratus
- Cortinarius caninus
- Cortinarius caperatus (previously Rozites caperata) gypsy mushroom (Europe, North America)
- Cortinarius castaneicolor
- Cortinarius cedretorum
- Cortinarius cinereoroseolus
- Cortinarius cinnabarinus
- Cortinarius cinnamomeus – also known as Dermocybe cinnamomea (Europe, North America), may be edible, but has deadly look-alikes (C. gentilis)
- Cortinarius cinnamomeus-luteus – edible, but deadly look-alikes (C. gentilis)
- Cortinarius citrinifolius
- Cortinarius citrinipedes
- Cortinarius clandestinus
- Cortinarius claricolor – eaten in Europe, unknown edibility in North America
- Cortinarius cliduchus
- Cortinarius coerulescentium
- Cortinarius collinitus – belted slimy cort (North America)
- Cortinarius corrugatus
- Cortinarius corrugis
- Cortinarius cotoneus
- Cortinarius crassus
- Cortinarius croceofolius – edible, but deadly look-alikes (C. gentilis)
- Cortinarius crocolitus
- Cortinarius crystallinus
- Cortinarius cuprescens – France
- Cortinarius cyanites
- Cortinarius cyanosterix – France
- Cortinarius cyanus
- Cortinarius cycneus – New Zealand
- Cortinarius cylindratus – France
- Cortinarius cylindripes
- Cortinarius cylindrisporus – USA (Florida)
- Cortinarius cylindrospermus – Argentina
- Cortinarius cypriacus
- Cortinarius cystidifer
- Cortinarius cystidiocatenatus – Australia
- Cortinarius cystidiophorus – France
- Cortinarius cystidiorapaceus – Argentina
Read more about this topic: List Of Cortinarius Species