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The White Willow (Salix alba) is a widespread European species, which has become naturalised on many other parts of the world; it is a tree up to 30 m tall. A cultivarA cultivar is a cultivated variety of a plant species. Modern cultivars are often, but not necessarily, hybrids between species; they may equally well represent particularly desirable selections from populations of a single species. Cultivars generally ar of it, 'Caerulea', selected for fast, straight growth, is grown in southern EnglandEngland is the largest, the most populous, and the most densely populated of the four " Home Nations" which make up the United Kingdom of Great Britain and Northern Ireland (UK). Occupying the south-eastern portion of the island of Great Britain, England, the woodThis article describes the wood that comprises trees and boards. For the Chinese element, see wood (classical element). For the town, see Wood, South Dakota or Wood, Wisconsin. For the type of golf club, see golf club (equipment). Veluwe, The Netherlands being used for the manufacture of cricket batA cricket bat is used by the batsmen in the sport of cricket. This specialised bat is shaped something like a paddle with a flat side and shallow V shaped side, the flat side is used to hit the ball. The bat is traditionally made from willow wood, specifis.

The Weeping Willow, very widely planted as an ornamental tree, is also a cultivar, Salix 'Tristis', derived from a hybrid between the ChineseThis article is on the geographic and cultural entity. For other meanings, see China (disambiguation). China ( Traditional Chinese: , Simplified Chinese: , Hanyu Pinyin: Zhongguo, Wade-Giles: Chung-kuo) is a country in continental East Asia with some oute S. babylonica and S. alba.

Some willows, particularly arctic and alpine species, are very small; the Dwarf Willow (Salix herbacea) rarely exceeds 6 cm in height, though spreading widely across the ground.

Almost all willows take root very readily from cuttings or where broken branches lie on the ground.

1 Medicinal properties

The bark of the willow tree has been mentioned in ancient texts from AssyriaThis article concerns the ancient Mesopotamian kingdom. For the modern-day peoples in northern Iraq and neighboring areas, see Assyrian. Assyria a country named after its original capital city, Asshur on the Tigris, was originally a colony of Babylonia, a, Sumeria and EgyptJumhuriyat Misr al-Arabiyah ( In Detail) Official language Arabic Capital Cairo Largest City Cairo President Hosni Mubarak Prime Minister Ahmed Nazif Area Total % water Ranked 29th 1,001,450 km² 0. 6% Population Total (2003) Density Ranked 15th 74,718,797 as a remedy for aches and fever, and the Greek physician Hippocrates wrote about its medicinal properties in the 5th century BC. Native Americans across the American continent relied on it as a staple of their medical treatments.

The active extract of the bark, called salicin, was isolated to its crystalline form in 1828 by Henri Leroux , a French pharmacist, and Raffaele Piria , an Italian chemist, who then succeeded in separating out the acid in its pure state. Salicin is acidic when in a saturated solution in water (pH = 2.4), and is called salicylic acid for that reason.

In 1897 Felix Hoffmann created a synthetically altered version of salicin (in his case derived from the Spiraea plant), which caused less digestive upset than pure salicylic acid. The new drug, formally Acetylsalicylic acid, was named aspirin by Hoffmann's employer Bayer AG. This gave rise to the hugely important class of drugs known as non-steroidal anti-inflammatory drugs (NSAIDs).

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Salix alba

Salix purpurea

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1 Medicinal properties

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