Austrocylindropuntia subulata (Muehlenpfordt) Backeberg
Synonyms: Opuntia subulata, Opuntia segethii, Maihueniopsis subulata, Opuntia exaltata, Cylindropuntia subulata, Cylindropuntia exaltata, Austrocylindropuntia exaltata, Pereskia subulata, Maihueniopsis exaltata
Common Names: Eve's Needle, Cane Cholla
From high in the mountains in Ecuador and Peru