I want to use this dried bunch of berries in a flower arrangement but need to be able to name the specimen.
SOLVED: Does anyone know what this tree is?
Those twigs look incredibly free of "fuzz" - so likely not Rhus typhina - Staghorn Sumac.
It's very close cousin is a better bet: Rhus glabra - Smooth Sumac.
When in leaf, you can compare with the third similar species: Rhus copallina - Shining Sumac.