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Beech bark disease is a disease that causes mortality and defects in beech trees in the eastern United States, Canada and Europe. [ 1 ] [ 2 ] [ 3 ] In North America , the disease occurs after extensive bark invasion by Xylococculus betulae and the beech scale insect , Cryptococcus fagisuga . [ 4 ]
Cryptococcus fagisuga, commonly known as the beech scale or woolly beech scale, is a felted scale insect in the superfamily Coccoidea that infests beech trees of the genus Fagus. It is associated with the transmission of beech bark disease [ 3 ] because the puncture holes it makes in the bark allow entry of pathogenic fungi which have been ...
Beech bark disease, which is caused by the interaction of an aphid-like insect called a scale and a fungus, has also weakened some trees. On the walk through Albro Woods, Faubert found several ...
Beech bark disease is a fungal infection that attacks the American beech through damage caused by scale insects. [39] Infection can lead to the death of the tree. [40] Beech leaf disease is a disease that affects American beeches spread by the newly discovered nematode, Litylenchus crenatae mccannii.
Fagus grandifolia is a large deciduous tree [6] growing to 16–35 metres (52–115 feet) tall, [7] with smooth, silver-gray bark.The leaves are dark green, simple and sparsely-toothed with small teeth that terminate each vein, 6–12 centimetres (2 + 1 ⁄ 4 – 4 + 3 ⁄ 4 inches) long (rarely 15 cm or 6 in), with a short petiole.
Dutch elm disease is a pathogen spread by beetles that devastated American elm, other native elms are more resistant; Thousand cankers disease is a fungus carried by a beetle that infests black walnut; Oak wilt is a fungal pathogen spread by sap beetles that infects oaks; Beech bark disease is a fungus carried by a scale insect that infests ...
Neonectria faginata is a species of fungus that affects Beech trees in North America. [1] Neonectria faginata, along with Neonectria ditissima, are the cause of beech bark disease in trees that have already been affected by beech scale Cryptococcus fagisuga. [2] [3] [4]
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