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Key of Rhus (sumacs)

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1.  Leaves with three leaflets and a strong, aromatic smell when crushed:
Rhus aromatica (fragrant sumac)

1. Leaves with many pinnate leaflets and no strong smell when crushed: go to 2






2.  Leaves shiny green with few teeth and winged rachis, fruits dark and drooping:
Rhus copallinum (winged sumac or shining sumac)

2. Leaves dull green with teeth and no winged rachis, fruits red and erect: go to 3







3. Twig densely hairy, underside of leaf with hairy midrib:
Rhus hirta (staghorn sumac)

3. Twig not hairy or sparsely hairy, underside of leaf with waxy white coating (glaucous):
Rhus glabra (smooth sumac)