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Pine Tree PNG Images - Pine (Pinus) is a genus of evergreen coniferous trees or shrubs from the Pinaceae family. With about 110 species, it is the largest genus in the family. Like other members of the pine family, they naturally occur exclusively in the northern hemisphere (the exception is Pinus merkusii, which also affects the southern hemisphere in Sumatra). The area of ​​distribution of the genus is large: they grow from the area of ​​the Nordic forests through the temperate zone and subtropics to the mountains of the tropics, somewhere they rise to the upper border of the forest or above it. It probably comes fromOld World, however, reaches maximum species richness in North and Central America, another rich region is East Asia, Indochina and the Himalayas. There are 12-13 native species in Europe, of which 9-10 are double-needle and 3 are five-needle. In general, these are strongly light-loving, competitively weak trees with very low demands on soil quality, which are able to tolerate a wide variety of habitats; many play the role of pioneer trees. Some North American and Mediterranean species are very well adapted to forest fires, as evidenced by the fossil record. The oldest living higher organisms on Earth are among the pines: some specimens of the long- lived pine (Pinus longaeva) are demonstrably more than 4,800 years old.
The genus is taxonomically divided into two subgenus: Pinus or "hard pine", with 2-3, exceptionally 5 or up to 8 needles in a bundle with a persistent sheath, two vascular bundles, vents evenly distributed on all sides of the needle and on the dorsal scales of cones with a pronounced "Umbilical cord" (umbo), and Strobus, or "soft" pine, usually with 3 or 5 needles in a deciduous sheath bundle, with one vascular bundle, vents predominantly on the inside of the needle, and umbilical cord (umbo) located at the end of the seminal scale. It evolved in the Lower Cretaceous.
Pines are among the most economically important coniferous trees. Above all, they provide high-quality, soft to medium-hard, easily workable wood, which can be used for construction purposes as well as for the production of furniture. Resins containing a number of aromatic terpenic substances are also used in aromatherapy and cosmetics, as well as in medicinal ointments for rheumatism or arthritis; it is also a source of natural turpentine.
Needles and bark have many vitamins and have been or still are used in various parts of the world in food production, as well as edible seeds of some species, known as pine or "cedar". Pines are of great importance in garden architecture as ornamental trees and shrubs, they are also popular as Christmas trees. Many species of pine have played a significant role in the cultural, folklore and spiritual life of the people, they also appear in countless literary and artistic works and in heraldry.
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