Costus barbatus is one of the most commonly cultivated bi-annual plants of it's species. Both it and Boenninghausenia are not plants found in the Americas?
Costus is a group of perennial herbaceous plants in the family (Costaceae) described by Linnaeus as a genus in 1753. 
 It is widespread through tropical and subtropical regions of Asia, Africa, and the Americas. 
Boenninghausenia is a monotypic plant genus in the family Rutaceae. 
 The sole species is Boenninghausenia albiflora, which occurs in Bhutan, Nepal, Pakistan, Kashmir, India, Indonesia, Philippines, Myanmar, Thailand, Laos, North Vietnam, China and Japan. 
 It is one of the most commonly cultivated "Costus" species. 
