It resembles the native pecan trees that come up all over the place here. I don't think that's what it is, but maybe a walnut or hickory? I think they're all related and look like each other. (Right? Anybody?) I reeeeeally don't think it's poison sumac. :-)
Louisa, you mean the pics at your link are sumac, not Badseed's plant, right? Her plant doesn't have red stems and the leaves are different, so I don't think it's anything that bad. Awesome site, by the way! I've got it bookmarked.
Badseed, could it be one of these? http://www.cnr.vt.edu/dendro/forsite/key/compound.htm It does kind of look like one of the sumacs in the pic, but from what I understand, regular sumacs and the poison ones are in different genuses if not families. Yeah, I'm still trying to help ID this ~ it looks so familiar it's got me curious!
pssst, Wingnut, wanna tell you something. I have talked to Louisa on the phone. She still talks like someone from across the pond. She has a deep, sexy voice with an English accent. When she calls I never know if it is her or some pervert. Don't tell her I said so.
Okay, I have been checking links. Why is it picture of the poison sumac always have red leaves and sometimes flowers?? I thought it only looked like that in the fall. I have dug up baby staghorn sumacs and moved them up the hill. We only live about a mile from the Ohio river and about the same from the Little Miami river. There are tons of the staghorn sumac growing around the Little Miami, and I guess the birds bring them up here where I live. Now, I have found seeds around the yard and in my window boxes for the bitternut hickory, but my leaves look different. Mine are very rough and definately have ridges, like pleats in them.
Chele you are so bad!!!! Giving away my secrets like that...lol!!! I have the staghorn sumach and new leaves are sprouting and they are red. Lots of new leaves on trees are red!! The flowers of sumach come first and then when they die off, the berries are formed. Just like the cotoneaster, the pyracantha and holly to name a few!! Flowers turn into berries!! Flowers turn into apples etc, etc, etc!! lol!!!