Willow
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Willows, also called sallows and osiers, of the genus Salix, comprise around 350 species of typically deciduous trees and shrubs. They are primarily found on moist soils in cold and temperate regions.
Salix alba Morton
At the base of the petiole, a pair of stipules form. These may fall in spring, or last for much of the summer or even for more than one year (marcescence).
Young male catkin
Pollard willow and woodpile in the Bourgoyen-Ossemeersen, Ghent, Belgium
Aspirin
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Aspirin is the genericized trademark for acetylsalicylic acid, a nonsteroidal anti-inflammatory drug used to reduce pain, fever, and inflammation, and as an antithrombotic. Aspirin is used to treat in
Willow
…aromatic organic compounds. Back in 1853, chemist Charles Frédéric Gerhardt treated the medicine sodium salicylate with acetyl chloride to produce acetylsalicylic acid for the first time. More than 40 years later in 1897, Felix Hoffmann created the same acid (in his case derived from the Spiraea plant), which was found…
Pure acetylsalicylic acid
1923 advertisement
Old package. "Export from Germany is prohibited"
In Canada and many other countries, "Aspirin" remains a trademark, so generic aspirin is sold as "ASA" (acetylsalicylic acid).