Celtis occidentalis, Hackberry is a medium to large sized tree, 40-60 ft in height with a slender trunk. In the wild under optimal conditions in the midwest (eg, it can grow to 130 ft and is moderately long lived, at 150-200 years. Hackberry grows in many different habitats, although it prefers bottomlands and soils high in limestone and is somewhat tolerant of shade, if other conditions are optimal. Does well in a range of soils, even wet, and is drought tolerant once established. Will not do well in maritime areas. It is easily identified by its cork-like bark with wart-like protuberances.  It produces small fruits that turn orange-red to dark purple in the autumn, often staying on the trees for several months, and is a valuable resource for birds and animals.
 
Uncommon but found in the mountains and western piedmont. Click to see it's range in North Carolina
 
More info here