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Pacific poison oak

Toxicodendron diversilobum, commonly named Pacific poison oak or western poison oak, is a woody vine or shrub in the sumac family, Anacardiaceae.

From Wikipedia, licensed under CC BY-SA 4.0

Research Mentions

iNaturalist → · observation

Poison oak confirmed along popular El Dorado Hills hiking trail

If you hike, bike, or let your dog off-leash on the Browns Ravine Trail, this sighting marks exac...

iNaturalist → · observation

Poison oak confirmed growing along a popular Bay Area hiking trail

Knowing exactly where poison oak grows along a trail you hike lets you spot its shiny three-leaf ...

iNaturalist → · observation

Verified poison oak sighting logged in LA County trails

If you hike or garden near chaparral and oak woodlands in Southern California, knowing exactly wh...

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Taxonomy

Scientific: Toxicodendron diversilobum
Family: Anacardiaceae
Genus: Toxicodendron
Kingdom: Plantae
Order: Sapindales
Habit: shrub