Are Costus and Boenninghausenia plants both found in the Americas?
Boenninghausenia 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.
Bidens cernua Bidens cernua is a plant species in the sunflower family, widespread across much of Eurasia and North America. It is commonly called nodding beggarticks or nodding bur-marigold,