Polystigma amygdalinum Cannon, 1996

Fungi, Acscomycota, Sordariomycetes, Phyllachorales

on Prunus

gall

up to 4 cm large yellowish brown to orange brown, slightly thickened leaf spots; sunken in the tissue are many inconspicuous pycnidia. The leaves are somewhat crinkled; they drop prematurely. On the fallen leaves develop in the winter a dark red stromata, in which perithecia are formed.

hostplants

Rosaceae, monophagous

Prunus dulcis, tenella.

notes

in Mediterranean regions a serious pest on almond.

references

Cannon (1996a).

09/12/2015