poison ivy, toxicodendron radicans

aggressive america american americana appalachain appalachia appalachian blue botanical branch close closeup cluster common dermatitis dermatology dermatoxic detail eastern forest garden green grow growing horizontal invasive irritating itch itching itchy ivy killer leaf leaves lush mountain mountains mountian mountians native natural oak painful plants poison poisonous radicans rash ridge scratch skin species states three toxic toxicodendrol toxicodendron united usa vertical vine virginia weed weeding weeds woods