The tupelo /ˈtuːpᵻloʊ/, black gum, or pepperidge tree, genus Nyssa /ˈnɪsə/, is a small genus of trees with alternate, simple leaves. It is usually included in the subfamily Nyssoideae of the dogwood family, Cornaceae, but is placed by some authorities in the family Nyssaceae.
Most Nyssa species are highly tolerant of wet soils and flooding, and some need such environments as habitat. Some of the species are native to eastern North America from southeastern Canada through the Eastern United States to Mexico and Central America. Other species are found in eastern and southeastern Asia from China south through Indochina to Java and southwest to the Himalayas.(Wikipedia)