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.
Coleus Coleus is a former genus of flowering plants in the family Lamiaceae. In recent classifications, the genus is no longer recognized, and the formerly included species are instead placed in the genera "Plectranthus" and "Solenostemon". Because the type species, Coleus amboinicus ("Plectranthus amboinicus") is now placed in "Plectranthus", "Coleus" is regarded as a synonym of "Plectranthus". The term "coleus" is often used as a common name for species formerly placed in the genus "Coleus" that are cultivated as ornamental plants, particularly Coleus blumei ("Plectranthus scutellarioides"), which is popular as a garden plant for its brightly colored foliage.