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Flower and leaves. It is a shrub (rarely a small tree) reaching 2–7 m (7–23 ft) tall and 3 m (10 ft) broad, [1] with a dense, rounded crown. The leaves are evergreen, persisting 2–3 years, ovate to elliptic, borne in opposite pairs, 4–10 cm long and 2–4 cm broad, fine hairs persisting on the underside, with an entire margin.
Viburnum sieboldii has coarse, open structure, flat-topped flowers, reddish-black fruit, and can grow as a small tree. Viburnum tinus is a widely grown garden and landscape shrub. The cultivars 'Pragense' [ 10 ] and 'Eskimo', [ 11 ] of mixed or uncertain parentage, have won the Royal Horticultural Society 's Award of Garden Merit .
Tree height is the vertical distance between the base of the tree and the highest sprig at the top of the tree. The base of the tree is measured for both height and girth as being the elevation at which the pith of the tree intersects the ground surface beneath, or "where the acorn sprouted."
The Native Tree Society measurement guidelines [1] [2] also generally follow the American Forests prescription, with some additional elaborations. Many trees have burls bumps, and knots along their trunk. If these occur at the 4.5 feet girth measurement height, including them in the measurement would falsely inflate the girth measurement.
Difficulties occur when estimating the form class of the tree in question. The Mesavage and Girard form classes used to classify the trees to decide which volume table should be used. These volume tables are also based on different log rules such a Scribner, Doyle, and International 1 ⁄ 4 in (6.4 mm) scale.
A tree caliper is a tool to measure the diameter of a tree. When used in forestry, the tree caliper tool measures the DBH or "diameter at breast height" of a tree that is growing in a landscape of any kind. The measurement is generally made at 4.5' or 1.4m above the soil.
Measurement of tree circumference, the tape calibrated to show diameter, at breast height, making sure that the tape is perfectly level and that the tape is not kinked, so as not to skew the reading of the diameter. Diameter at breast height, or DBH, is a standard method of expressing the diameter of the trunk or bole of a standing tree.
Viburnum tinus; Viburnum treleasei; Viburnum tridentatum; Viburnum trilobum; Viburnum triphyllum; U. Viburnum utile This page was last edited on 26 March 2013, at ...
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