Nyssa. Nyssa aquatica. Tupela Gum, Sour Gum, Swamp Tupelo.

Botanical name: 

Nyssa. Nyssa aquatica L. Tupela Gum. Sour Gum. Swamp Tupelo. (Fam. Cornaceae.)—A large tree growing in deep swamps in the Southern United States. The root, known as Tupelo root, has been recommended for surgical tents. (A. J. P., 1883.)

The Dispensatory of the United States of America, 1918, was edited by Joseph P. Remington, Horatio C. Wood and others.