Calcarisporiella
thermophila

Calcarisporium
arbuscula

Calocera
cornea - viscosa

Calonectria
crotalariae - floridana - scoparia - spathulata

Calosphaeria
barbirotris

Calyptella
campanula

Camarops
petersii

Camposporium
antennatum - pellucidum

Candelabrum
spinulosum

Candida
musae - palmioleophila

Capronia
acutiseta - coronata - dactylotricha - epimyces - fungicola - mansonii - munkii - nigerrima - parasitica - perpussila - pilosella - pulcherrima

capronia
semiimmersa

Capronia
villosa

Cenococcum
geophilum

Cephaliophora
irregularis

Cephaloascus
fragrans

Cerastomella
sensu

Ceratobasidium
anceps

Ceratocystiopsis
minuta - minuta-bicolor - retusi

Ceratocystis
adiposa - brunnea - clavata - coerulescens - fimbriata - introcitrina - laricicola - longirostellata - major - microspora - moniliformis - montium - olivaceapini - paradoxa - perfecta - radicicola

Ceratosporella
compacta

Cercospora
beticola - cruenta - nicotianae

Cerinosterus
luteoalbus

Ceriosporopsis
halima

Cerocorticium
molare

Chaetocladium
brefeldii - jonesii

Chaetomella
circinoseta - raphigera

Chaetomidium
cephalothecoides

Chaetomium
atrobrunneum - aureum - bostrychodes - brasiliense - cancroideum - chiversii - cochliodes - cruentum - cupreum - cuyabenoensis - dreyfussii - elatum - floriforme - funicola - fusiforme - globosum - homopilatum - indicum - irregulare - longicolleum - lucknowense - madrasense - malaysiense - medusarum - megalocarpum - molicellum - murorum - nigricolor - nozdrenkoae - pachypodioides - perlucidum - piluliferum - quadrangulatum - reflexum - seminudum - sphaerale - spinosum - spirale - subaffine - subspirale - subspirilliferum - succineum - trilaterale - turgidopilosum - virescens

Chaetopsina
fulva

Chaetospermum
chaetosporum

Chaetosphaeria
abietis - myriocarpa - pulviscula

Chalara
angustata - heteroderae

Chalaropsis
punctulata - thielavioides

Cheiromoniliphora
gracilis

Chlamydomyces
palmarum

Chloridium
botryoideum - caudigerum - lignicola - phaeosporum - virescens

Chondrostereum
purpureum

Chromelosporium
macrospermum

Chrysosporium
botryoides - globiferum - hispanicum - holmii - medium - minor - pyriformis - sulfureum - tropicum - vallenorense

Ciboria
acerina - amentacea

Ciborinia
erythronii

Ciboriopsis
simulata

Circinella
muscae - simplex - umbellata

Circinotrichum
australiense - maculiformis - papakurae - ponmudiensis

Cirrenalia
macrocephala

Cistella
hymeniophila

Cladiophialophora
boppii

Cladobotryum
apiculatum

Cladophialophora
carrionii

Cladorrhinum
foecundissimum

Cladosporium
amoenum - butyri - cladosporioides - colocasiae - cubense - cucumerinum - effusum - elatum - fulvum - herbarum - macrocarpum - malorum - paeoniae - rigidophorum - sphaerospermum - tenuissimum - vignae

Clathridium
corticola

Clathrosphaerina
zalewskii

Claviceps
purpurea

Climacodon
pulcherrimus - septentrionalis

Clitocybe
clavipes - irire - nebularis - odora

Cochliobolus
australiensis - bicolor - carbonum - chloridis - geniculatus - hawaiiensis - heterostrophus - intermedius - kusanoi - lunatus - miyabeanus - nisikadoi - ravenelii - sativus - spiciferus - victoriae

Codinaea
assamica

Coemansia
braziliensis - pectinata

Colacogloea
peniophorae

Coleophoma
cylindrospora

Colletotrichum
coccodes - coffeanum - gossypii - lindemuthianum - lini - musae - nigrum

Collybia
butyracea - fusipes - peronata - reinakeana

Columnocystis
abietina - africana - ambigua

Coniella
pulchella

Coniochaeta
ellipsoidea - kellermannii - tetraspora

Coniochaetidium
mirabile

Coniophora
arida - marmorata - puteana

Coniothyrium
carpaticum - clematidis-rectae - concentricum - fuckelii - olivaceum

Coprinus
atramentarius - clastophyllus - comatus - disseminatus - domesticus - micaceus - niveus - radians - radiatus - stercorarius - stercoreus - tuberosus

Cordana
pauciseptata

Cordyceps
subsessilis

Coriolopsis
polyzona

Corticium
conigenum - meridioroseum

Cortinarius
alboviolaceus

Corynascus
sepedonium

Corynespora
melonis - sesameum

Corynesporopsis
antillana

Coryneum
beijerinckii

Crepidotus
variabilis

Crinipellis
perniciosa

Cristulariella
depraedans

Cryphonectria
havanensis - parasitica

Cryptocline
cinerescens

Cryptocoryneum
bigeminum

Cryptophiale
udagawae

Cryptosporiopsis
melanigena - radicicola

Ctenomyces
serratus

Cubonia
bulbifera

Cucurbitaria
berberidis

Cudoniella
acicularis

Cunninghamella
binariae - clavata - echinulata - elegans - multiverticillata - polymorpha - septata

Cunninghammyces
umbonatus

Curvicladium
cygneum

Curvularia
affinis - clavata - inaequalis - lunata - pallescens - penniseti - protuberata - senegalensis - trifolii - verruciformis - verruculosa

Custingophora
olivacea

Cyathicula
coronata

Cyathus
stercoreus

Cylindrobasidium
evolvens

Cylindrocarpon
congoense - curtum - destructans - didymum - lichenicola - lucidum - olidum - supersimplex

Cylindrocephalum
aureum - stellatum

Cylindrocladiella
camelliae

Cylindrocladium
hawksworthii - heptaseptatum - macrosporum - naviculatum - parvum - pteridis - scoparium - spathiphylli

Cylindrodendrum
album

Cylindrophora
hoffmanni

Cylindrosporium
concentricum

Cylindrosympodium
variabile

Cylindrotrichum
hennebertii - oligospermum

Cymatoderma
dendriticum - elegans - fuscum

Cyphellophora
laciniata

Cystostereum
murraii