Willow.........
Uses: The leaves and bark of the willow tree have been mentioned in ancient texts as a remedy for aches and fever. Even the Ancient Greek physician Hippocrates wrote about its medicinal properties in the fifth century BC. Native Americans across the American continent relied on it as a staple of their medical treatments.
By 1829, scientists discovered that it was the compound called salicin in willow plants which provided the pain relief. The bark of the Willow trees contains salicin, a substance that chemically resembles aspirin. It temporarily relieves headache, stomachache, and other body pain. Salicin is metabolized into salicylic acid in the human body, which is a precursor of aspirin.