with …
twigs=red-brown, zig-zag from leaf scar to leaf scar;  bark=smooth with light-colored horizontal lenticels
honey locust  Gleditsia triacanthos

pod length >10 cm (>4 in);  leaf scar sunken, with two buds, one above the other
Kentucky coffeetree  Gymnocladus dioicus

tree=flat top;  pods=long-tapered
mimosa silk tree  Albizia julibrissin

leaf scar surrounds winter bud
Kentucky yellowwood  Cladrastis kentukea

leaf scar does not surround winter bud;  bark contains many flower buds
eastern redbud  Cercis canadensis

Learn more about legume/pea family Fabaceae

Discover Life Encyclopedia of Life Google Google images Wikipedia