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Venturia inaequalis asexual spores on crabapple leaf (SEM, 1500x) (click on image to enlarge it)
Author(s): Charles Krause, USDA-ARS
Source: Wikimedia Commons


This is a large class of fungi characterized by the asci already forming in an unfertized mass of hyphae (the stroma) and having a double wall (bitunicate). After absorbing water, the asci expand and push the ascopsores out of the pseudothecia. Today, the Dothideomycetes are more precisely defined by their genetic structure.

For a taxonomic review of this class see Wijayawardene et al., 2014.

This page only deals with plant pathogens. For other groups of Dothideomycetes in the system see

The following orders are here included: