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. Costus:  It is widespread through tropical and subtropical regions of Asia, Africa, and the Americas. Boenninghausenia: Boenninghausenia is a monotypic plant genus in the family Rutaceae.
i don't know