Found in the eastern United States and southern Ontario, the cucumber magnolia is one of the largest types of magnolia. It can become a very straight, stately, tall tree. It is primarily native to the Appalachian belt. In Canada, the cucumber magnolia is listed as an endangered species. The flowers are typically small, yellow-green, and high in the tree. They are not as showy as other magnolias. The tree's name comes from the unripe fruit that looks like a small cucumber. When this “cucumber” is mature, its six to twelve seeds become bright red.