Tree with lumpy green flowers?

Anyone know what kind of tree this is?

Persimmon?? Leaves look kinda right, but I can't tell by the flowers in the photo. My persimmons are about the size of an olive right now, but if you are more northerly, maybe yours are at the flowering stage.

I looked them up and I don't think so. These flowers are really lumpy blobs and the edges are very tiny flowers, like 1-2 mm each. The leaves smell like apples, are compound with smooth edges, pinnate with opposite pairs, mostly of 7 leaflets.

Maybe some kind of ash? Especially if the leaves (not just the leaflets) are opposite on the twigs....

May be a Shagbark Hickory - If so , congragulations !

I thought I remembered it having hickory-type nuts on it, but all of the hickories already have nuts, the fruits around them are about an inch across already and this one is still just blooming. There is a shagbark hickory behind this tree. I've yet to figure out what to do with all the nuts but I do know that they can make pushing a mower on a slope very treacherous - the nuts are like ball-bearings under your feet!

I looked it up and found this site: http://ohioplants.org/hickory/ that shows that hickories have the typical female flowers (long things) and then male flowers which are the lumpy flowers I'm seeing, so you're right, it's a hickory! I looked up the bark and it looks like it's probably a pignut hickory.

Can you have pigs ? That is how it got its' name. Also , wildlife loves them. Can you hunt venison where you are ? Squirrels ? Hickory fattened / hickory smoked hams sound like a winner .

I do have pigs but they're small. I wasn't sure if they could crack the shells on the hickories, but I guess they should be able to. Last year they got all the acorns I could gather. For some reason the nut trees are all on thin rocky soil - places it's hard to put up a pig-strong fence or drive a grounding rod, so I have to gather the nuts for them. They're living the life, food brought to them, LOL! If the food flavors the meat (they say feeding too many acorns makes the meat bitter) then would hickory-fed pork taste already smoked?