The honey locust tree, Gleditsia triacanthos, is easily identified by its combination of thorns, long narrow compound leaves, and long curly seedpods. Found in the eastern United States, this species is actually a legume, in the family Fabaceae. Its long seedpods resemble beans and peas, which are more familiar legumes. Honey locust pods start out green and eventually turn crisp and dark brown, growing up to about 7 inches long. The pods are sometimes eaten by livestock, which digest the pulp and excrete the seeds. Thorns are found on both the trunk and branches of this tree species, again starting out green, but then turning red, and eventually grey. Leaves of honey locust are pinnately divided, similar to mesquite and acacia.

Gleditsia triacanthos honey locust tree eastern united states long curly seed pods thorns trunk

Encyclopedia of Life (pics!)
Images of Honeylocust (some closeups)
Cultivation Info
Detailed Species Info