Poison oak, Toxicodendron diversilobum, is flaming red in the fall landscape. However, don’t gather them for any bouquets to decorate your table. All parts of the plant are poisonous, causing painful ...

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 ...

- poisonous shrub of the Pacific coast of North America that causes a rash on contact ...