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The maple is a common symbol of strength and endurance and has been chosen as the national tree of Canada. Maple leaves are traditionally an important part of Canadian Forces military regalia, for example, the military rank insignia for generals use maple leaf symbols. There are 10 species naturally growing in the country, with at least one in ...
Some trees (for example maple trees) have seeds that have wing-like structures that enable the seed to spin to the ground in autorotation, which helps the seeds to disseminate over a wider area. The most common use of autorotation in helicopters is to safely land the aircraft in the event of an engine failure or tail-rotor failure.
Vine maple (Acer circinatum) Samara of Combretum zeyheri. A samara (/ s ə ˈ m ɑːr ə /, UK also: / ˈ s æ m ər-/) [1] is a winged achene, [2] a type of fruit in which a flattened wing of fibrous, papery tissue develops from the ovary wall. A samara is a simple dry fruit, and is indehiscent (not opening along a seam).
Aerial seeding helicopter Aerial seeding from a Hughes 500 helicopter. Aerial seeding is a technique of sowing seeds by spraying them through aerial mechanical means such as a drone, plane or helicopter. When the purpose is reforestation, it is known as aerial reforestation. Aerial seeding is considered a broadcast method of seeding. [1]
Gyrocarpus americanus is a slender, deciduous tree with smooth, grey bark. The tree grows to about 12 m in height. The leaves are spirally arranged, crowded near the ends of the branches, and grow up to 150 × 120 mm in size. They are ovate, often 3-lobed, dark green above, paler and greyer below, with velvety surfaces, 3-veined from the base ...
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Acer negundo, also known as the box elder, boxelder maple, Manitoba maple or ash-leaved maple, is a species of maple native to North America from Canada to Honduras. [3] It is a fast-growing, short-lived tree with opposite, ash-like compound leaves.
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