Final diagnosis


Alternaria cichorii (Alternaria leaf spot)

<b> <i> Alternaria cichorii </i> </b> is associated with brown leaf spots on lettuce, here more specifically on escarole. (alternaniose, <i> Alternaria </i> leaf spot)
Ultimately, the leaf spots caused by <b> <i> Alternaria cichorii </i> </b> necrotize and thin out <b> <i> Alternaria cichorii </i> </b> (alternaria, < i> Alternaria </i> leaf spot)
On this salad leaf, the dark brown spots caused by <b> <i> Alternaria cichorii </i> </b> (Alternaria, <i> Alternaria </i> leaf spot), lighten in the center.
Several multicellular, brown, club-shaped spores have transverse and longitudinal septa. They are extended by a hyaline beak. <b> <i> Alternaria cichorii </i> </b> (alternaria, <i> Alternaria </i> leaf spot)