It belongs to the family Apocynaceae and it originates from the eastern basin of the Mediterranean and Asia. It is an evergreen shrub that spontaneously grows along the coast and waterways. It has long, sharp and light green leaves; it produces large tubular flowers with five petals that are red, pink or white. After the blooming the fruits (that are absolutely inedible) mature in the shape of an elongated pod. In the pods there are feathery seeds.