Swamp willow, also known as Salix nigra, is a common tree species found in wetlands, swamps, and riverbanks in the eastern and southern regions of the United States. Some synonyms for swamp willow are black willow, pussy willow, and basket willow. The black willow name comes from the tree's dark and ridged bark, which helps it withstand wet conditions. Pussy willow refers to the tree's springtime branches, which produce soft, furry catkins that are widely used in decoration. Basket willow, on the other hand, highlights the tree's supple wood, which is ideal for making baskets and other woven crafts. Regardless of the name, swamp willows play a vital role in their ecosystem and are valued for their beauty and utility.