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Clerodendrum glabrum is a small to medium deciduous tree, widespread from Tropical to Southern Africa. In common with others of this family, its bark is covered in prominent white lenticels. Leaves are usually in whorls of 3 and produce a fetid smell when crushed.
If bark blisters are found on branches over 10–15 cm from the trunk, those branches may be pruned off, which will stop the spread of the disease to the rest of that tree. If the main trunk is affected then no control is possible, and the tree will die once the infection encircles the tree.
It is a deciduous tree growing to 10 to 20 m (33 to 66 ft) tall (rarely to 27 m), with a slender crown and a trunk up to 70 cm (28 in) (exceptionally 1 m) in diameter, with smooth but dull grey-white bark finely marked with dark horizontal lenticels. The shoots are grey-brown with fine downy.
Co-existing tree and plant species will gain in the void left by the affected species, but often providing different functions. Eastern hemlock, for example, is commonly replaced by black birch in the northeast—a slow-growing, shade-tolerant and deep shade producing evergreen tree, replaced by a fast-growing, open, deciduous tree. While short ...
Celtis africana, the white stinkwood, is a deciduous tree in the family Cannabaceae. Its habit ranges from a tall tree in forest to a medium-sized tree in bushveld and open country, and a shrub on rocky soil. It occurs in Yemen and Somaliland and over large parts of Africa south of the Sahara. [4]
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 ]
It is a medium-sized deciduous tree, growing to heights of up to 15–30 m (49–98 ft) (rarely more), with a trunk up to 2 m (6.6 ft) in diameter and a broad, rounded crown. The bark is smooth and greenish-white to greyish-white with characteristic diamond-shaped dark marks on young trees, becoming blackish and fissured at the base of old ...
The name "chalk maple" (in addition to the Latin name, meaning "white skin") comes from the attractive smooth and thin chalky white or light gray bark on mature trees. The bark becomes ridged and blackish at the base as it ages. The leaves are opposite and simple, 5–9 cm long and broad, often drooping at the tip. They have 5 or 3 long-pointed ...