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  • Pacific poison-oak and western poison-ivy : identification and management 

    Edmunds, Brooke; Grand, Lauren; Christiansen, Alicia; Hulting, Andrew Gerald (Pullman, Washington : Washington State University Extension, 2018-11)
    Pacific poison-oak is common in western Oregon and Washington. Its near relative, western poison-ivy, is found in eastern Oregon and Washington, throughout Idaho, and eastward. These plants are so similar in their appearance, ...