Genus Oxydendrum, also known as sourwood or sorrel-tree, is a plant species that belongs to the family Ericaceae. Native to eastern North America, sourwood is a small to medium-sized tree that is known for its sour-tasting leaves. While the scientific name of this plant is well-known, there are several synonyms that can be used to refer to it. Some of the most common synonyms for Genus Oxydendrum include Oxydendrum arboreum, sorrel tree, and sorrelwood. Additionally, sourwood is sometimes referred to as "lily-of-the-valley tree" due to its fragrant, white, bell-shaped flowers that resemble those of the lily of the valley plant. Regardless of the terminology used, Genus Oxydendrum is a unique and fascinating species of tree that is beloved by gardeners and nature enthusiasts alike.