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Picture library: 39117

GNOMONIA QUERCINA . Severe and extensive browning ( initially interveinal ) of leaves of red oak about 15 feet tall and 15 years old . Leaves neither wilt nor fall . This is the only fungus consistently associated with the browned areas . There is no other explanation discovered so the fungus seems to have been the cause . Location: Guildford , Surrey , England .

Reference: 39117

GNOMONIA QUERCINA . Severe and extensive browning ( initially interveinal ) of leaves of red oak about 15 feet tall and 15 years old . Leaves neither wilt nor fall . This is the only fungus consistently associated with the browned areas . There is no other explanation discovered so the fungus seems to have been the cause . Location: Guildford , Surrey , England .


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Credit line: Forestry Commission

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