| Cactaceae | |
Armatocereus arboreus
| Rauh & Backeb. | Descr. Cact. Nov. 1: 13 | 1956 [1957] |
| Cactaceae | |
Armatocereus arduus
| F. Ritter | Kakteen Südamer. 4: 1271 | 1981 |
| Cactaceae | |
Armatocereus armatus
| Johnson | Cat. Johnson unpaged | 1954 |
| Cactaceae | |
Armatocereus balsasensis
| F. Ritter | Kakteen Südamer. 4: 1271–1272 | 1981 |
| Cactaceae | |
Armatocereus brevispinus
| Madsen | Fl. Ecuador 35: 9 | 1989 |
| Cactaceae | ** |
Armatocereus cartwrightianus
| (Britton & Rose) Backeb. | Cactaceae Handb. Kakteen. 1941(2): 26 | 1942 |
| Cactaceae | ! |
Armatocereus cartwrightianus
| (Britton & Rose) Backeb. ex A.W. Hill | Index Kew. 25 | 1938 |
| Cactaceae | |
Armatocereus churinensis
| Rauh & Backeb. | Descr. Cact. Nov. 1: 13 | 1956 [1957] |
| Cactaceae | |
Armatocereus confusus
| F. Ritter | Kakteen Südamer. 4: 1276 | 1981 |
| Cactaceae | ** |
Armatocereus ghiesbreghtii
| (K. Schum.) F. Ritter | Backeberg "Descr. Cact. Nov." Diag. Erört. Taxon. Nomenkl. Fragen 31 | 1958 |
| Cactaceae | ! |
Armatocereus godingianus
| (Britton & Rose) Backeb. ex E. Salisb. | Index Kew. 20 | 1947 |
| Cactaceae | |
Armatocereus godingianus
| Backeb. | Blätt. Kakteenf. 12(12): 1 | 1938 |
| Cactaceae | |
Armatocereus humilis
| (Britton & Rose) Backeb. | Cact. 2: 905 | 1959 |
| Cactaceae | |
Armatocereus jungo
| Backeb. | Blätt. Kakteenf. pt. 1 {p.7} | 1935 |
| Cactaceae | |
Armatocereus laetus
| (Kunth) Backeb. ex A.W. Hill | Index Kew. 25 | 1938 |
| Cactaceae | ** |
Armatocereus laetus
| (Kunth) Backeb. | Kaktus-ABC 176 | 1935 |
| Cactaceae | |
Armatocereus maranionensis
| Krainz & F. Ritter | | |
| Cactaceae | |
Armatocereus mataranus
| F. Ritter | Succulenta (Netherlands) 46(2): 23, [illus.] | 1967 |
| Cactaceae | ** |
Armatocereus matucanensis
| Backeb. | Kaktus-ABC 176, 411 | 1935 |
| Cactaceae | ! |
Armatocereus matucanensis
| Backeb. ex A.W. Hill | Index Kew. 25 | 1938 |
| Cactaceae | |
Armatocereus mocupensis
| H. Johnson | | |
| Cactaceae | ** |
Armatocereus nazcaensis
| H. Johnson | Kakteen Südamer. 4: 1276 | 1981 |
| Cactaceae | |
Armatocereus neolaetus
| Y. Itô | The Cactaceae 174 | 1981 |
| Cactaceae | |
Armatocereus oligogonus
| Rauh & Backeb. | Descr. Cact. Nov. 1: 13 | 1956 [1957] |
| Cactaceae | |
Armatocereus procerus
| Rauh & Backeb. | Cactus (Paris) 51: 95 | 1956 |
| Cactaceae | |
Armatocereus rauhii
| Backeb. | Descr. Cact. Nov. 1: 13 | 1956 [1957] |
| Cactaceae | |
Armatocereus riomajensis
| Rauh & Backeb. | Descr. Cact. Nov. 1: 13 | 1956 [1957] |
| Cactaceae | |
Armatocereus rupicola
| F. Ritter | Kakteen Südamer. 4: 1278 | 1981 |