Celtis occidentalis, commonly known as the Hackberry tree, has a variety of synonyms that are used to identify it among scientific and botanical communities. These synonyms include Celtis crassifolia, Celtis mississippiensis, and Celtis pallida. The Hackberry tree is a deciduous tree that is native to the United States and is known for its hardy nature and resilient growing habits. It grows in a wide range of conditions and can reach heights of up to 60 feet. The tree is important in many ecosystems, providing food and shelter for numerous species of wildlife. Its synonyms reflect its importance and highlight the diverse ways in which it is identified.