Species: ~ 13.
- Armatocereus arduus F. Ritter 1981 (Marañon Valley, Peru)
- Armatocereus brevispinus J. E. Madson 1989 (Catamayo to Loja, Loja, Ecuador)
- Armatocereus cartwrightianus (Britton et Rose) Backeberg ex A.W. Hill 1938 (Southern Ecuador, northern Peru)
= Lemairocereus cartwrightianus Britton et Rose 1920
- Armatocereus godingianus (Britton et Rose) Backeberg ex E. J. Salisbury 1947 (Río Chanchán, Ecuador)
= Lemairocereus godingianus Britton et Rose 1920
- Armatocereus humilis (Britton et Rose) Backeberg 1959 (Dagua Valley, western Cordillera, Columbia)
= ...
- Armatocereus laetus (Knuth) Backeberg ex A. W. Hill 1938 (?southern Ecuador, nothern Peru)
= ...
- Armatocereus mataranus F. Ritter 1966 (Cajamarca, Ancash, Peru)
...
- Armatocereus matucanensis Backeberg ex A. W. Hill 1938 (southern Ecuador, Peru)
= ...
- Armatocereus oligogonus Rauh et Backeberg 1957 (Huancabamba Valley, nothern Peru)
- Armatocereus procerus Rauh et Backeberg 1957 (southern Peru)
- Armatocereus rauhii Backeberg 1957 (Cajamarca, Amazonas, Peru)
= ...
- Armatocereus riomajensis Rauh et Backeberg 1957 (Río Majes, southern Peru)
- Armatocereus rupicola F. Ritter, 1981 (Cajamarca, Peru)
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