Horsechestnut – Guignardia Blotch

Guignardia aesculi Horsechestnut – Guignardia Blotch Signs & Symptoms

: Infected leaf

: Leaf spot with pycnidia evident

: Leaf spot with pycnidia evident

Horsechestnut – Guignardia Blotch Pathogen

: Top of pycnidium showing ostiole

: Cross-section of pycnidium in leaf tissue

: Cross-section of pycnidium

: Conidia with mucoid appendages

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