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).