The true anthracnose diseases are caused by species of Colletotrichum or Gleosporium (Fig. 43-1,-2,-3,-4). The only difference between these two genera is defined to be the occurrence of dark setae (hairs) in the acervuli of Colletotrichum but not Gleosporium. This is a variable characteristic and probably not a valid difference and therefore the two genera should be combined. Species of Gnomonia, Glomerella, and Elsinoe, which are Ascomycetes, typically produce asexual spores in the form-genus Colletotrichum (Gleosporium). Perfect stages have not been found for many species of Colletotrichum (Gleosporium). Some examples are
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