"Epichloë tembladerae" is found in North America, where it has been identified in the grass species "Festuca arizonica", and in South America, where it has been found in numerous grass species, including "Bromus" "auleticus", "Bromus" "setifolius", "Festuca" "argentina", "Festuca" "hieronymi", "Festuca" "magellanica", "Festuca" "superba", "Melica stuckertii", "Phleum alpinum", "Phleum" "commutatum", "Poa" "huecu" and "Poa" "rigidifolia".