Cleistocactus orthogonus Cárdenas in Cactus (Paris) 64: 161. 1959

Holotype: Bolivia, Potosí, Chaqui to Betanzos, alt. 3400 m, Apr 1957, M. Cárdenas 5500 (LIL: LIL001896) https://plants.jstor.org/stable/10.5555/al.ap.specimen.lil001896

Taxon for this name