Which species appears in areas more westernly, Cleistocactus or Rhynchostylis?
Cleistocactus Cleistocactus is a genus of columnar cacti native to mountainous areas - to 3000 m - of Peru, Uruguay, Bolivia and Argentina. The name comes from the Greek "kleistos" meaning closed because the flowers hardly open.
Bulbophyllum cleistogamum Bulbophyllum cleistogamum is a species of orchid in the genus "Bulbophyllum".