Nerium oleander

"Nerium oleander" /ˈnɪəriəm ˈoʊliː.ændər/ is an evergreen shrub or small tree in the dogbane family Apocynaceae, toxic in all its parts. It is the only species currently classified in the genus "Nerium". It is most commonly known as oleander, from its superficial resemblance to the unrelated olive "Olea".