Black - Robinia pseudoacacia: Black locust is a fast growing tree that can reach up to 100 feet in height at maturity.

Leavea are alternate, pinnately compound with 7 to 19 leaflets. Leaves are 8 to 14 inches long. Leaflets are oval, one inch long, with entire margins.

Flowers are present from May through June.

Fruit: Brown, pea pods 2 to 4 inches long; containing 4 to 8 smooth, redish-brown seeds.

Twig: Zigzag, somewhat stout and angular, red-brown in color with spines in pairs, 2 at each leaf. Buds are submerged beneath the leaf scar.

Bark: Gray or dark brown, ridged and furrowed-- resembles a woven rope.

Black locust has been planted extensively for its nitrogen fixing abilities, as a source of nectar for honeybees, and for fenceposts and hardwood lumber. The clonal pattern of growth and connected roots are promoted for erosion control. It is also used for mine soil reclamation.