It has been noted that even in the times of the pioneers and the Native Americans, people would search for places for water by looking for willow trees.

They are commonly found in riparian environments (these are areas or environments that are close to or in the vicinity of water, such as lakes or rivers. These plants can be found in the form of shrubs but are most often found as trees. Species such as the Red Willow, the Mono Willow, the Arroyo Willow, and others. The state of California contains a number of different species of willow trees. Salicylic acid can also be found in willow trees. Currants contain about 0.57 mg of acid per kg of the fruit.

Cherries contain about 0.40 mg of acid per kg of the fruit. Plums contain about 0.28 mg of acid per kg of the fruit. Crab-apples contain about 0.24 mg of acid per kg of the fruit. Grapes contain about 0.32 mg of acid per kg of the fruit. Fruits such as, raspberries (both black and red forms), strawberries, currants, apricots, plums, black cherries, peaches, grapes, crab-apples, ordinary apples, and oranges. This acid can also be found in many fresh fruits that people eat everyday. These plants include the leaves of a wintergreen tree, the sweet birch, and others. Salicylic acid can be found in certain plants in the form of esters. This is a picture of a flower called the Dark Blue Snakeweed, another plant that contains salicylic acid It is also in a popular pill form which aids in fever and swelling reduction, headaches, and the typical aches and pains. Salicylic acid can be found in ointments, creams, and lotions to help in the reduction or curing of acne, psoriasis, warts, calluses etc. Native Americans who lived in California used the bark of the willow tree in their tea to aid in the remedy of certain ailments such as fevers and swelling. The ancient Assyrians and ancient Egyptians used it to help with headaches and other such aches and pains. Salicylic acid has been used for medicinal purposes for over thousands of years. It is perhaps best known as the active ingredient in “Aspirin”. This acid has been found in trees such as the wintergreen, the sweet birch, the willow, and many fruits such as strawberries, cherries, apples, oranges, and others. It also fights off harmful pathogens that could potentially injure the plant. Salicylic acid is a plant hormone now considered to be critical for many plants.

Salicylic acid molar mass