Toxicodendron refers to a group of plants related to sumac. Most people know at least one of these plants by its common name, such as poison oak or poison ivy. Toxicodendron plants produce an oil that ...

The most common causes of ACD are the plants of the Rhus genus, poison ivy (toxicodendron radican), poison oak (toxicodendron quercifolium and toxicodendron diversilobum), and poison sumac ...

Poison Sumac (Toxicodendron vernix or Rhus vernix) is a woody shrub growing to 3 m tall. All parts of the plant contain a toxic resin called urushiol that causes skin and mucous membrane irritation to ...

Up until recently, New Englanders had two notorious plants that cause high levels of skin rash and irritation. We are taught early to give wide berth to "leaves of three" in reference to poison ivy.