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Picture library: 37712

NECTRIA GALLIGENA . A canker caused by this fungus on a 2 year old apple twig . Note the imperfect state , Cylindricarpa heteronema , fruiting profusely in concentric rings around the canker . The cross section shows the trace of the bud which was the infection count and that infection of the shoot occured after the first growing season. Location: Unknown .

Reference: 37712

NECTRIA GALLIGENA . A canker caused by this fungus on a 2 year old apple twig . Note the imperfect state , Cylindricarpa heteronema , fruiting profusely in concentric rings around the canker . The cross section shows the trace of the bud which was the infection count and that infection of the shoot occured after the first growing season. Location: Unknown .


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Credit line: Forestry Commission

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