-
Cryphonectria parasitica – Chestnut Blight non-native
Species, Fungus, Terrestrial
Clwy'r Gastan Bêr
-
Cyathus berkeleyanus non-native
Species, Fungus, Terrestrial
-
Cystolepiota fumosifolia non-native
Species, Fungus, Terrestrial
-
Cystolepiota ompnera non-native
Species, Fungus, Terrestrial
-
Desmosorus oncidii – Coffee Rust non-native
Species, Fungus, Terrestrial
Lady's Tresses Rust, Cawod Goch Troellig yr Hydref, Rhwd Coffi
-
Dietelia codiaei non-native
Species, Fungus, Terrestrial
-
Donkioporia expansa non-native
Species, Fungus, Terrestrial
-
Eccilia flosculus non-native
Species, Fungus, Terrestrial
-
Echinoderma efibulis non-native
Species, Fungus, Terrestrial
-
Echinoderma rubellum non-native
Species, Fungus, Terrestrial
-
Entyloma cosmi non-native
Species, Fungus, Terrestrial
-
Favolaschia calocera – Orange Ping-Pong Bat non-native
Species, Fungus, Terrestrial
-
Galerina steglichii non-native
Species, Fungus, Terrestrial
-
Ganoderma australe s. str. – Southern Bracket non-native
Species, Fungus, Terrestrial
Ysgwydd y De
-
Geopora sumneriana – Cedar Cup non-native
Species, Fungus, Terrestrial
Cwpan Cedrwydd
-
Graphiola phoenicis non-native
Species, Fungus, Terrestrial
-
Gymnoconia nitens non-native
Species, Fungus, Terrestrial
-
Gymnopilus dilepis – Magenta Rustgill non-native
Species, Fungus, Terrestrial
Tagell Goch Borffor
-
Gymnopilus filiceus non-native
Species, Fungus, Terrestrial
-
Gymnopilus purpuratus non-native
Species, Fungus, Terrestrial