I couldn't believe how similar this was to walnut when split open. The big difference is the smell. It is nothing like walnut, it actually has a spicy smell a bit reminiscent of cinnamon. The leaves were simialr to an ash, sorry there were none left for a picture. The only other significant feature is the carmel streaks running through the grain, maybe this be the key factor to IDing it. Oh, one more thing, the dark brown color of grain lightens up quite a bit as it dries.