The Exobasidiomycetes are a
class of
fungi sometimes associated with the abnormal outgrowths of plant tissues known as
galls. The class includes
Exobasidium camelliae Shirai, the camellia leaf gall and
Exobasidium vaccinii Erikss, the leaf and flower gall. There are eight
orders in the Exobasidiomycetes, including the
Ceraceosorales,
Doassansiales,
Entylomatales,
Exobasidiales,
Georgefischeriales, Malasseziales,
Microstromatales and the
Tilletiales. Four of the eight orders include
smut fungi. The families
Ceraceosoraceae and Malasseziaceae were formally validated in 2009 for the orders Ceraceosorales and Malasseziales, respectively.
