Which flowering plant is native to Central America, Helictotrichon or Odontonema?
Helictotrichon: Helictotrichon (alpine oatgrass) is a genus of perennial flowering plants in the grass family. Odontonema: Odontonema, the toothedthreads, is a genus of flowering plants in the bear's breeches family, Acanthaceae. Odontonema:  It is native to Central America.
Odontonema