Dark streaking in the xylem underlying a bleeding canker
Arrested bleeding and underlying lesion
Lesion underlying basal bleeding canker
Mottled appearance of necrotic tissue, caused by bleeding canker
Lesion extension over one year
Newly extending necrotic lesion
Girdling lesion on horse chestnut branch
Armillaria (white mycelium) extending into canker lesion
Horse chestnut with fruiting Flammulina on bleed spot