Blumeriella kerriae (Stewart) Korf, 1971

kerria twig and leaf blight

on Kerria

Kerria japonica, Hungary, Budapest, 14.vii.2023 © László Érsek

severely affected leaf

conidia masses

parasite

Leaf spots, also cankers on the shoots. Acervuli numerous, with hyaline, filiform conidia, 45-91 µm, 2-3 septate.

host plants

Rosaceae, monophagous

Kerria japonica.

references

Robinson, Könyes & Scrace (2017a).