Magnolia tree (Magnolia grandiflora); photo by TANAKA Juuyoh (田中十洋) on Flickr (use permitted with attribution).
Magnolia
Mississippi adopted the magnolia as the official state tree in 1952. Mississippi's nickname is The Magnolia State and the magnolia is also the state flower of Mississippi (adopted in 1900).
Although no specific species of magnolia was designated as the state tree of Mississippi, most references recognize the Southern Magnolia (Magnolia grandiflora) as the state tree.