Cross-section of a young oak twig - 8

Cross-section of a young oak twig - 8

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Description

The photo depicts a cross-section of a young oak twig. The oak tree is a symbol of hardness and longevity, and it is widely represented in European cultural works and coats of arms. Oak (Quercus L.) is a genus of trees and shrubs in the beech family (Fagaceae), comprising approximately 460 species found almost exclusively in the temperate zone of the Northern Hemisphere and at high elevations in the tropical zone. The southernmost occurrences are in the Sundaland and Colombia. There are 90 species in the USA and Canada, 27 in Europe, and 35 in China. These trees and shrubs bear characteristic fruits called acorns. They grow in a wide range of habitats, from semi-arid regions to subtropical rainforests, mostly associated with deciduous leaf-shedding forests in the temperate zone and with the rainy season during the summer in the tropical zone. Their flowers are pollinated by wind. The genus has significant commercial importance. Many species provide valuable timber (especially Quercus robur, Q. macrocarpa, Q. alba, and Q. rubra). Oak bark is a source of tannins, and cork oak bark is a source of cork. Acorns were fed to pigs and used as food by humans. Dye was obtained from galls that develop on oaks and their bark. Numerous species are grown as ornamental plants.

Downloading

You can download this poster/image in high quality. You can then print it at your local printing shop and hang it on the wall.

p.File parameters to download

Width

2456 px

Height

1840 px

Size

2 MB