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Pacific Poison Oak

Toxicodendron diversilobum (Torr. & Gray) Greene

Anacardiaceae (Cashew Family)

▲▼large plant climbing on a tree

▲▼vine climbing on a tree

▲thicket of upright, non-climbing stems

▲▼young growth along the ground

▲▼stems with fruit (unripe, above) (ripe, below)

Toxicodendron diversilobum (Torr. & Gray) Green; Pacific Poison-Oak: (Bayer Code:  RHUDI; US Code TODI)

·         Similar to poison ivy in appearance, but Pacific poison oak has lobed teeth on the leaflets, like a white oak, not smooth leaflet margins or pointed teeth on margins, as on poison ivy

·         Is not found east of the Rocky Mountains

·         Leaves, oils from sap can cause allergic reactions in sensitive individuals

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Updated 15 January 2019