How Can You Tell If Sumac Is Smooth?

How Can You Tell If Sumac Is Smooth? Pinnate and compound, Smooth Sumac leaves are large, fern-like constructions with smooth green or purple stems supporting pairs of shiny, dark green, lance-shaped leaflets and a single terminal leaflet. Each leaf is between 1 and 1-1/2 feet long and contains 11 to 31 leaflets. Leaflets all have