Morinda is a genus of flowering plants in the madder family, Rubiaceae, placed within the order Gentianales. The genus comprises approximately 80 species of trees, shrubs, and vines distributed across all tropical regions of the world. Its centre of diversity lies in Borneo, New Guinea, northern Australia, and New Caledonia.
All Morinda species bear aggregate or multiple fruits — structures formed from the coalescence of multiple flowers — which may be fleshy or dry. The best-known member of the genus is Morinda citrifolia, commonly called noni, whose fleshy fruits have been used in traditional medicine in Japan, Korea, and China, though no confirmed clinical evidence of efficacy exists.
Etymology
The name Morinda is a Latin compound of morus ('mulberry') and indica ('of India'). The mulberry reference alludes to the appearance of the genus's characteristic aggregate fruits.
Distribution
Morinda is distributed across all tropical regions of the world. The centre of species diversity lies in Borneo, New Guinea, northern Australia, and New Caledonia.
Cultural Uses
Morinda citrifolia (noni) has a long history of use in traditional Japanese, Korean, and Chinese medicine, where it is considered a herb with biological properties. No confirmed clinical evidence of efficacy has been established.
