Rhus Vernix is a toxic plant species commonly known as Poison Sumac. It belongs to the Anacardiaceae family and produces urushiol, a chemical that causes severe allergic reactions in humans leading to itching, swelling, and blistering of the skin. To avoid exposure to this plant, it's essential to identify it by its alternate leaf pattern, an odd number of leaves, and grayish-white berries. However, it's easy to confuse it with other non-toxic species like Staghorn Sumac and Smooth Sumac. Other synonyms for Rhus Vernix include Toxicodendron vernix, Poison Elder, Thunderwood, and Poison Dogwood. Knowing the various synonyms of Poison Sumac can help in identifying it precisely and avoid harmful contact.