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• n  a shrub or tree of the genus Rhus (usually limited to the non-poisonous members of the genus)

• Tannic acid (or tannin) is the leatherizing element in oak, sumach and other plants.
• Tannic acid (or tannin) is the leatherizing element in oak, sumach and other plants.

• sumac
• shumac

Quotes

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• Henry Ford in Bradenton Herald
  The fuel of the future is going to come from fruit like that sumach out by the road, or from apples, weeds, sawdust - almost anything,Ford told The New York Times in 1925. "There is fuel in every bit of vegetable matter that can be...