What is "parastemon"

Parastemon is a genus of plant in the family Chrysobalanaceae described as a genus in 1842. It is native to Southeast Asia and to Papuasia.

1. Parastemon grandifructus - Sarawak, Sabah
2. Parastemon urophyllus - Nicobar Islands, Thailand, Peninsular Malaysia, Borneo, Sumatra
3. Parastemon versteeghii - Sulawesi, Maluku, New Guinea, Admiralty Islands