What plant is this?

Saw this on a state park. Only place I've seen it. Y'all know what it is?

Might be Fragrant Sumac (Rhus aromatica)? I've never seen that before but that would be my best guess.

yep, i think that’s right. we have a few R. aromatica planted at the orchard that would look like that if they were doing a bit better (they’ll get there, but they’re in almost pure clay on a windy hillside).