Last week on my rounds I was quite excited to see a Butternut (Juglans cinerea) tree growing (barely) on a site I was visiting. It's the much rarer cousin of Black Walnut, and it is endangered in Illinois. It is prone to a fungal disease, and the tree I saw below had a half-dead crown.
I have tried to describe how the bark of these trees differs from the dark uniform ridges of Black Walnut. The adjective I have settled on is kind of a tiger-stripey appearance, and if you ever see the two side by side you'll know what I mean.
Underneath the tree I scouted around hopefully for fallen nuts, and saw none. So, no guerrilla gardening projects this time. This is one tiger that will likely fade into the urbanizing jungle fairly soon. Threatened species or not, I can't imagine the homeowners will want to abide a sizeable dying tree for too long.