Salix Alba Caerulea is commonly known as the white willow tree, which has been used for centuries for its medicinal properties to treat conditions like fever, inflammation and pain relief. It is a species of willow tree that is native to Europe and western Asia. Some synonyms for the Salix Alba Caerulea tree include the European willow, Bay willow, Pussy willow, Osier, Cricket bat willow, and White willow. These names are used interchangeably and refer to the same plant species. White willow trees are commonly found near water bodies and are identified by their pale green leaves, white bark, and elongated shape.