Poison oak in fall colors. (Red plant in middle of pic)
At the waterfall.
Not good for toilet paper. Toxicodendrum diversilobum.
This is a plant with an oil that can irritate skin
This is the only patch of this plant I know in this general area.
Toxicodendron diversilobum, commonly named Pacific poison oak or western poison oak (syn. Rhus diversiloba), is in the Anacardiaceae family (the sumac family).