The Exobasidiomycetes are a

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 ...

fungi 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 ...

sometimes associated with the abnormal outgrowths of plant tissues known as galls. The class includes ''

Exobasidium camelliae ''Exobasidium camelliae'' is a phytopathagenic fungus that infects ornamental shrubs of the ''Camellia'' genus. It absorbs nutrients from the host through its haustoria and causes the leaves of the host plant to be thicker and lighter green than ...

'' Shirai, the camellia leaf gall and ''

Exobasidium vaccinii ''Exobasidium vaccinii'', commonly known as “red leaf disease,” or “Azalea Gall,” is a biotrophic species of fungus that causes galls on ericaceous plant species, such as blueberry and azalea ('' Vaccinium'' and ''Rhododendron'' spp.). A ...

'' Erikss, the leaf and flower gall. There are eight

orders Order, ORDER or Orders may refer to: * Categorization, the process in which ideas and objects are recognized, differentiated, and understood * Heterarchy, a system of organization wherein the elements have the potential to be ranked a number of d ...

in the Exobasidiomycetes, including the

Ceraceosorales The Ceraceosorales are an order of smut fungi in the class Exobasidiomycetes. It is a monotypic order, consisting of a single family, the Ceraceosoraceae, which in turn contain a single monotypic genus, ''Ceraceosorus''. ''C. bombacis'' is ...

Doassansiales The Doassansiales are an order of fungi in the class Exobasidiomycetes. The order consist of three families: the Doassansiaceae, the Melaniellaceae, and the Rhamphosporaceae (which is a monotypic In biology, a monotypic taxon is a taxonom ...

Entylomatales The Entylomatales are an order of smut fungi in the class Exobasidiomycetes. A monotypic order, it consists of a single family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affini ...

Exobasidiales The Exobasidiales are an order of fungi in the class Exobasidiomycetes. The order consists of four families as well as one genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organi ...

Georgefischeriales The Georgefischeriales are an order of smut fungi in the class Exobasidiomycetes. The order consists of four families Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by mar ...

Malasseziales ''Malassezia'' (formerly known as ''Pityrosporum'') is a genus of fungi. It is the sole genus in family Malasseziaceae, which is the only family in order Malasseziales, itself the single member of class Malasseziomycetes. ''Malassezia'' species ...

Microstromatales The Microstromatales are order of fungi in the class Exobasidiomycetes. The order consists of three families Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or ...

and the

Tilletiales The Tilletiales are an order of smut fungi in the class Exobasidiomycetes. It is a monotypic order, consisting of a single family, the Tilletiaceae, which contains seven genera. The roughly 150 species in the Tilletiales all infect hosts of the g ...

. Four of the eight orders include

smut fungi The smuts are multicellular fungi characterized by their large numbers of teliospores. The smuts get their name from a Germanic word for dirt because of their dark, thick-walled, and dust-like teliospores. They are mostly Ustilaginomycetes (phylum ...

. The families

Ceraceosoraceae The Ceraceosorales are an order of smut fungi in the class Exobasidiomycetes. It is a monotypic order, consisting of a single family, the Ceraceosoraceae, which in turn contain a single monotypic genus, ''Ceraceosorus''. ''C. bombacis'' is ...

and

Malasseziaceae ''Malassezia'' (formerly known as ''Pityrosporum'') is a genus of fungi. It is the sole genus in family (biology), family Malasseziaceae, which is the only family in order (biology), order Malasseziales, itself the single member of class (biology ...

were formally validated in 2009 for the orders Ceraceosorales and Malasseziales, respectively.

References

External links

Forestry Images - Exobasidiomycetes
Ustilaginomycotina Fungus classes Taxa described in 2007 {{Ustilaginomycotina-stub