Ardisia (coralberry or marlberry) is a genus of flowering plants in the family Primulaceae. It was in the former Myrsinaceae family now recognised as the myrsine sub-family Myrsinoideae. They are distributed in the Americas, Asia, Australia, and the Pacific Islands, mainly in the tropics. There are over 700 accepted species. One species, Ardisia japonica is one of the 50 fundamental herbs in traditional Chinese medicine. Several Ardisia species are the sources of the chemical compounds known as ardisiaquinones.