poison ivy vine - toxicodendron radicans

america american americana appalachain appalachia appalachian blue contact delicate detail eastern ecology environment fall fields forest green ground horizontal ivy leaves meadows mountain mountains mountian mountians nature oak ornamental outdoors park parks parkway perennial petals pistil plant plants poison poisonous radicans rash rashes ridge rural seasons spring springtime states sumac summer time toxicodendron tree trees united urushiol usa vertical vine vines virginia