Oleander (Nerium oleander, (pronounced /ˈnɪəriÉ™m ˈoÊŠliËÂ.ændÉ™r/), is an evergreen shrub or small tree in the dogbane family Apocynaceae and is one of the most poisonous plants known. It is the only species currently classified in the genus Nerium. Other names include Adelfa, Alheli Extranjero, Baladre, Espirradeira, Flor de São Jose, Laurel de jardÃÂn, Laurel rosa, Laurier rose, Flourier rose, Olean, Aiwa, Rosa Francesca, Rosa Laurel, and Rose-bay (Inchem 2005), ÷ðúуü (Bulgarian), leander (Hungarian), leandru (Romanian), zakum,