The marmalade tree is also known as the orange berry or the Seville sweet orange tree. Other synonyms for this tree include the bitter orange tree, sour orange tree, and the citrus aurantium. This tree is native to Southeast Asia and is known for producing bitter oranges that can be made into a variety of products, including marmalade. The marmalade tree is a popular ornamental tree due to its attractive leaves, fragrant blooms, and colorful fruit. Its versatility as a fruit tree and its popularity as an ornamental tree make the marmalade tree a valuable addition to any garden or landscape.