What is "sour gum"

Tupelo \Tu"pe*lo\, n. [Tupelo, or tupebo, the native American Indian name.] (Bot.) A North American tree ( Nyssa multiflora) of the Dogwood family, having brilliant, glossy foliage and acid red berries. The wood is crossgrained and very difficult to split. Called also black gum, sour gum, and pepperidge.

Largo tupelo, or Tupelo gum (Bot.), an American tree ( Nyssa uniflora) with softer wood than the tupelo.

Sour tupelo (Bot.), the Ogeechee lime.

n. 1 ''Nyssa sylvatica'' 2 (taxlink Nyssa capitata species noshow=1)

n. columnar tree of eastern North America having horizontal limbs and small leaves that emerge late in spring and have brilliant color in early fall [syn: black gum, pepperidge, Nyssa sylvatica]

Sour gum can refer to:

• Black tupelo (Nyssa sylvatica), a medium-sized deciduous tree occasionally referred to as "sourgum".
• Water tupelo, a long-lived tupelo tree occasionally referred to as "sourgum".
• Sour gum, a sour type of chewing gum.