Box elder doesn't make berries. It's a maple, so it makes clusters of
dry, papery samaras. The berries subtended by a perfoliate bract
sound like some honeysuckles or else Tilia.
I'm wondering if (if there's a chance the plant is cultivated) we are
dealing with a Nandina.
"I DON'T LIKE SPAM!!!" wrote:
> I seem to remember that the box-elder has the nick-name of poison-ivy
> tree because its compound leaves resemble those of poison ivy. Perhaps
> this is what you have. A quick note: the compound leaves of box elder
> actually have 5 leaflets, not three, but two of the five are up the
> stem a little bit, so that the terminal 3 leaflets at a glance look
> like poison ivy. I can't remember what color the berries look like,
> but it seems to me that they are unusual in that they are subtended by
> a bract which is perfoliate, and looks unusual.
>> Hope this helps.