Toxicodendron diversilobum
Anacardiaceae
Poison-Oak
Vine or shrub, round stems reddish or gray. Leaves divided into 3 oblong shiny leaflets on twigs to 4 in. long. Edges can be smooth, wavy, or lobed. Dark green color becomes bright red in autumn. Oblong clusters of flowers on a separate stalk. Berries cream or brown. Grows at low to mid elevations in woodlands and on rocky slopes. Although resin in all parts of plant is toxic to life-threatening, most people only suffer from rashes or blisters after contact. Toxico is Latin for "poison" and dendron means "tree." Do not touch this plant or the similar T. rydbergii, poison-ivy.
- Rarity: Common
- Flowering Time: Late Spring, Early Summer
- Flower Form: 4-6 petals, flowers in clusters
- Life Cycle: Perennial
- Height: 1–8 feet
- Habitat: East-side Forest, West-side Forest
- Found In: Olympic NP
- Native: Yes
- Latin Synonyms: Rhus diversiloba
