Cleistocactus brookeae Holotype: Bolivia, Santa Cruz, Cordillera, Pozo No. 4, Camiri, alt. 900 m, [date given as March 1949 in the protologue but the holotype at LIL is dated March 1950], Corro s.n. in Cárdenas 4818 (LIL: 531590) Isotype: Bolivia, Santa Cruz, Cordillera, Pozo No. 4, Camiri, alt. 900 m, [date given as March 1949 in the protologue but the holotype at LIL is dated March 1950], Corro s.n. in Cárdenas 4818 (US)