Sumac was a popular kinnick kinnick ingredient with Amerindians.  Especially sought after in the fall after they turn red.  When smoked the leaves open up the bronchials and give a slight energy uptick.  Good for your lungs (as much as smoke can be).

Red berry clumps equals good sumac.  They are edible and covered with vitamin c.  If you rinse the clumps the C can just rinse off with the water.  But if you find them with no bugs, they make excellent lemonade (3 or 4 clumps soaked sun tea style) and if dried make a spice popular in the Middle East for adding some sour to your dish.  Smoke these leaves.

White berry clumps equals POISON.  These mainly grow in swampy areas.  AVOID