Melodinus is a genus of plant in the family Apocynaceae, first described as a genus in 1776. It is native to Indomalaya, Meganesia and various islands in the western Pacific. A type of monoterpenoid indole alkaloids called melodinines can be isolated from Melodinus plants.
Accepted species include:
Melodinus acutiflorus F.Muell. - Papua New Guinea, Queensland, New South Wales
Melodinus aeneus Baill. - New Caledonia
Melodinus angustifolius Hayata - Taiwan, N Vietnam
Melodinus australis (F.Muell.) ...