''Corticium invisum'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

fungus A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from t ...

in the

class Class or The Class may refer to: Common uses not otherwise categorized * Class (biology), a taxonomic rank * Class (knowledge representation), a collection of individuals or objects * Class (philosophy), an analytical concept used differentl ...

Agaricomycetes. It is a

corticioid fungus The corticioid fungi are a group of fungi in the Basidiomycota typically having effused, smooth basidiocarps (fruit bodies) that are formed on the undersides of dead tree trunks or branches. They are sometimes colloquially called crust fungi or p ...

and a plant pathogen, the causal agent of

black rot Black rot is a name used for various diseases of cultivated plants caused by fungi or bacteria, producing dark brown discoloration and decay in the leaves of fruit and vegetables: * A disease of the apple, pear and quince caused by a fungus ('' Botr ...

of tea ('' Camellia sinensis''), and was originally described from Sri Lanka. ''Corticium invisum'' has never been redescribed or reviewed and is unlikely to be a species of '' Corticium'' in the modern sense. Roberts (1999) referred Petch's original specimens to '' Ceratobasidium cornigerum''.

References

Fungal plant pathogens and diseases Fungi described in 1925 Taxa named by Thomas Petch {{fungus-plant-disease-stub