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Fungal diseases; Annosus root disease Heterobasidion annosum. Spiniger meineckellum [anamorph] Armillaria root disease Armillaria solidipes. Armillaria spp. Black stain root disease Leptographium wageneri var. pseudotsugae: Blue stain fungus Grosmannia clavigera: Bleeding sap rot Stereum sanguinolentum: Brown crumbly rot Fomitopsis pinicola ...
They are dark green and shiny on the top while the underside is a paler gray-green with fine hairs. In autumn, leaf color varies between red, yellow, and brown. Like other oak trees, the overcup oak has clustered terminal buds. [6] The bark is light to dark gray in color with irregular bark plates. Its bark plates are deeply ridged and furrowed ...
The bark is 5 centimetres (2 inches) thick, reddish to gray (but purple within), furrowed, and divided into slender plates. [4] The leaves are needle-like, flattened, 3–6 cm ( 1 + 1 ⁄ 8 – 2 + 3 ⁄ 8 in) long and 2 millimetres ( 3 ⁄ 32 in) wide by 0.5 mm thick, glossy dark green above, [ 4 ] with two green-white bands of stomata below ...
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Trees have natural chemicals that keep most fungi at bay, but climate change could be making trees more vulnerable, researcher says. Citizen scientists to study this tree disease found in ...
The bark on young trees is thin, smooth, grey, and contains numerous resin blisters. On mature trees, usually exceeding 80 years, [ citation needed ] it is very thick and corky, growing up to 36 cm (14 in) thick with distinctive, deep vertical fissures caused by the gradual expansion of the growing tree.
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 ]
Aleurodiscus oakesii on tree bark. Aleurodiscus oakesii is the most common fungi to cause “smooth patch disease” on the nonliving outer bark of trees. This fungal infection can lead to trees shedding and leaving smooth and lighter patches of bark on the tree, giving “smooth patch” its meaning.
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