Are Costus and Boenninghausenia plants both found in the Americas?
Costus Costus is a group of perennial herbaceous plants in the family (Costaceae) described by Linnaeus as a genus in 1753. It was formerly known as "Hellenia" after the Finish botanist Carl Niclas von Hellens. It is widespread through tropical and subtropical regions of Asia, Africa, and the Americas.
Cordia curassavica Cordia curassavica, commonly known as black sage or wild sage, is a species of flowering plant in the borage family, Boraginaceae. It is sometimes called tropical black sage to distinguish it from another unrelated species named black sage, "Salvia mellifera". It is native to tropical America but has also been widely introduced to Southeast Asia and the tropical Pacific region, where it is an invasive weed. The specific epithet is a latinised form of Curaçao, an island in the southern Caribbean Sea region and the locality of the type collection.