Toxicodendron rydbergii   western poison-ivy
           (Alt: Rhus radicans, Toxicodendron radicans var. rydbergii )
native                      woody           
Distribution: Foothills, Greenbelt, West Valley, Mid Elevation, South Boise, Lucky Peak, Oregon Trail

USDA Plants Link: Toxicodendron rydbergii   (TORY)

Our local version of western poison-ivy (Toxicodendron rydbergii) occurs as an open colony of low-growing erect stems, primarily close to water sources below 4000 ft elevation.

Even in winter, western poison-ivy can be readily recognized by its dull grayish stems bearing whitish berries.  Broken winter stems should be avoided, and emerging young leaves in spring are particularly rich in dermatitis-causing urushiol.  Many birds, however, relish the berries as an important winter food source.