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Dark streaking in the xylem underlying a bleeding canker

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Arrested bleeding and underlying lesion

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Lesion underlying basal bleeding canker

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Mottled appearance of necrotic tissue, caused by bleeding canker

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Lesion extension over one year

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Newly extending necrotic lesion

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Girdling lesion on horse chestnut branch

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Armillaria (white mycelium) extending into canker lesion

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Horse chestnut with fruiting Flammulina on bleed spot

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Tools & Resources