Which flowering plant is native to Central America, Helictotrichon or Odontonema?
Odontonema Odontonema, the toothedthreads, is a genus of flowering plants in the bear's breeches family, Acanthaceae. It is native to Central America.
Aspidosperma Aspidosperma is a genus of flowering plant in the family Apocynaceae, first described as a genus in 1824. It is native to South America, Central America, southern Mexico, and the West Indies.