Which species is found at higher elevations, Arundina or Guzmania?
Arundina:  This tropical Asiatic genus extends from India, Sri Lanka, Nepal, Thailand, Vietnam, the Ryukyu Islands, Malaysia, Singapore, China to Indonesia, the Philippines and New Guinea. Guzmania: Guzmania (tufted airplant) is a genus of over 120 species of flowering plants in the botanical family Bromeliaceae, subfamily Tillandsioideae. Guzmania:  They are found at altitudes of up to 3500 m in the Andean rainforests.
i don't know