Arkansas has lots of these trees. The are turning bright red now; the third week of September. They are commonly the first tree to show a scarlet color; even prior to sumacs and the deeper red dogwood trees.
Nyssa sylvatica grows to 20–25 metres (66–82 ft) tall, rarely to 35 metres (115 ft), with a trunk diameter of 50–100 centimetres (20–39 in), rarely up to 170 centimetres (67 in). These trees typically have a straight trunk with the branches extending outward at right angles.[1] The bark is dark gray and flaky when young, but it becomes furrowed with age, resembling alligator hide on very old stems. The twigs of this tree are reddish-brown, usually hidden by a greyish skin. The pith is chambered with greenish partitions.
The leaves of this species are variable in size and shape. They can be oval, elliptical, or obovate, and 5–12 cm (2–5 in) long. They have lustrous upper surfaces, with entire, often wavy margins. The foliage turns purple in autumn, eventually becoming an intense bright scarlet.
The flowers are very small, in greenish-white in clusters at the top of a long stalk. The fruit is a black-blue, ovoid stone fruit, about 10 mm long with a thin, oily, bitter-to-sour tasting flesh. There are from one to three such fruit together on a long slender stalk.
Black gum in full fall color
Black gum in the spring of the year
Black gum closeup in autumn (late summer too)
Life and Wildlife along the Little Buffalo River 
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