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Description. Betula nigra is a deciduous tree growing to 25–30 meters (80–100 ft) with a trunk 50 to 150 centimeters (20 to 60 in) in diameter. The base of the tree is often divided into multiple slender trunks. [2][3] Bark. Bark characteristics of the river birch differ during its youth stage, maturation, and old growth.
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] Through a presently unknown mechanism, excessive feeding by ...
In trees, heart rot is a fungal disease that causes the decay of wood at the center of the trunk and branches. Fungi enter the tree through wounds in the bark and decay the heartwood. The diseased heartwood softens, making trees structurally weaker and prone to breakage. Heart rot is a major factor in the economics of logging and the natural ...
Betula lenta is a medium-sized deciduous tree reaching 30 m (98 ft) tall, exceptionally to 35 metres (115 ft) [2] with a trunk up to 60 cm (2.0 ft) diameter. Heights of 50 feet (15 m) to 80 feet (24 m) are more typical. In younger trees the bark is characteristic of most birches, with smooth bark and distinct horizontal lenticels.
River birch, also called water birch, is native to flood plains and swamps of the eastern U.S. Instead of the recognizable bright white bark of other birch trees, river birch has tan and cinnamon ...
Description. Leaves are doubly serrated with sharp teeth. Betula papyrifera is a medium-sized deciduous tree typically reaching 20 metres (66 feet) tall, [4] and exceptionally to 40 m (130 ft) with a trunk up to 75 centimetres (30 inches) in diameter. [9] Within forests, it often grows with a single trunk but when grown as a landscape tree it ...
A Russian birch bark letter from the 14th century Birchbark shoes. Birch bark or birchbark is the bark of several Eurasian and North American birch trees of the genus Betula.. The strong and water-resistant cardboard-like bark can be easily cut, bent, and sewn, which has made it a valuable building, crafting, and writing material, since pre-historic times.
Leaves are 3-4 inches long, lanceolate and shiny green on top, dull whitish green underneath. This tree is mostly deciduous during the winter, but can start growing back leaves early during warm snaps in the winter. Yellow flowers grow in drooping catkins. In female red willows, the catkins turn into tufts of cottony seeds, which are windborn ...