Osage orange - maclura pomifera? Most have thorns on the branches but not necessarily always. Female trees have large green fruit the size of grapefruits.

A close up of the bark and a twig with leaf shape and arrangement would be most helpful :-)

John

Looks kinda 'elm-ish' from this distance.

But are those compound leaves? Need a close up of the leaves.

Lol I also thought it looked elmish at first and then thought no, it has compound leaves and dismissing both thoughts before making my WAG above lol

We need upclose pics of the leaves and bark!!!

John

Don't feel bad, folks. Elmish and OO were both my first reactions. Trunk looks very OO. Tree form looks elmish.
hortster

Japanese Zelkova (Zelkova serrata). Search this guy and see if this isn't your tree.

Wow, thanks for all the quick responses! Here's a close up of the mature leaves (sorry, only have my iPhone for a camera...). I wanted to take a photo of the new growth, but it's all so high up on the tree that my phone fails to take a decent pic. I am thinking that the Japanese Zelkova may be a strong possibility though - thanks!!

I'll try to get a halfway decent photo of the bark this evening.

This post was edited by holly_e on Tue, Jun 25, 13 at 13:28

It does not look like zelkova to me, but more like some kind of willow

Chinese elm

This post was edited by kuna on Tue, Jun 25, 13 at 16:17

Definitely 'Drake elm' - Ulmus parvifolia.

And not compound leaves after all.

And the bark. I'm agreeing with Drake / Chinese elm for sure, now that I looked up images of the bark.

Thanks again, everyone!! :)