White Willow Dried Cut Bark (Salix alba) is derived from the bark of Willow trees. They are mostly found on moist soils in colder & temperate areas of the Northern Hemisphere. Most of the species are known as Willow, but some narrow-leaved shrub species are called Osier, & some broader-leaved species are referred to as Sallow, both considered alterative names for this herb. During the mid-1700s, British minister/physician Edmund Stone was trying to find a cheap substitute for cinchona bark, the rare, costly South American herb. Cinchona was a bitter-tasting bark, & near Stone’s Oxfordshire home, he found another bark that looked & tasted similar-It was White Willow. As an experiment, he gave Willow bark tea to people with fevers. Their fevers & pain subsided. During the early 19th century, European chemists created Aspirin from White Willow bark’s active chemical, salicin. Aspirin came to the market for the first time in 1899, & within a few years, it was one of the most popular medecines on earth. White Willow Dried Cut Bark - Salix Alba 100 Grams Tea