Family: Juglandaceae
The Pignut hickory is a common tree found throughout the eastern United States. Pignut hickory frequently grows on dry ridgetops and side slopes throughout its range but it is also common on moist sites.
It has alternate compound leaves comprised of (usually) 5 leaflets with the bottom two being slightly smaller. The color of the leaves is a dark green and the leaf surfaces have a smooth texture.
The nuts are relatively small and pear-shaped.
Pignut hickory can grow to a relatively large tree; up to 120 feet in height with a diameter up to 4.5 feet.
It is a commonly planted as an ornamental because it is a large shade tree and during the fall its leaves turn bright yellow.
References:
http://caseytrees.org/tree-species/
Additional References: