Can anyone identify this tree for me? It's growing in a local park and appears to have some kind of fruit on it which I can't quite put my finger on. I've attached a picture below.
Looks like Juglan regia. Common walnut.
Ahhh that looks like it! Thanks Silver surfer! For some reason I never considered the fruit to be a nut. I kept looking up things like crabapples and understandably didn't get anywhere.