What is the scientific name of the willow tree?

The scientific name of the willow tree is Salix alba. This name identifies a specific species within the genus Salix, which is commonly known for its variety of willow species. Salix alba, or the white willow, is widely recognized for its distinctive slender branches and unique appearance. This species is often found near water bodies, reflecting the willow's preference for moist soil conditions.

The other options represent different genera and species. Quercus robur is the scientific name for the English oak, known for its strength and longevity. Acer saccharinum refers to the silver maple, a species notable for its fast growth and aesthetic appeal in landscaping. Lastly, Populus tremuloides is the scientific name for the quaking aspen, which is recognized for its trembling leaves and distinctive bark. Each of these trees belongs to a different family and exhibits unique characteristics that distinguish them from Salix alba.