ChamaeranthemumChamaeranthemum is a genus of flowering plants belonging to the family Acanthaceae. It includes four species native to the tropical Americas, including Costa Rica, Peru, and southern and southeastern Brazil.Accepted species:Chamaeranthemum beyrichii Chamaeranthemum malifolium Chamaeranthemum tonduzii ''Chamaeranthemum venosum''