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Aspergillus conidiophore
Source: Wikimedia Commons


This class of ascomycete fungi is mainly defined by its DNA sequence. Penicillium and Aspergillus are familiar members of this group. There are 2 types of sexual fruiting bodies:

  • perithecia, often covered with sharp spines, which have an opening from which the ascospores are released, or
  • cleistothecia and related structures which are typically completely closed and the ascospores are released when these structures break open or are opened by animals.

The Eurotiomycetes are divided into 2 subclasses, depending on the above structures of their fruiting bodies, the Chaetothyriomycetidae and the Eurotiomycetidae.

This page only deals with plant pathogens. For beneficial Eurotiomycetes, see Eurotiomycetes (antagonists) or Eurotiomycetes (entomopathogens).

The following orders are here included: