| Cactaceae | |
Nopalxochia ackermannii
| (Haw.) F.M. Knuth | Kaktus-ABC 161 | 1935 |
| Cactaceae | |
Nopalxochia conzattianum
| T. MacDoug. | Cact. Succ. J. (Los Angeles) 19(2): 22–23, f. 15–16 | 1947 |
| Cactaceae | |
Nopalxochia horichii
| Kimnach | Cact. Succ. J. (Los Angeles) 56(1): 6–7, f. 1–2 | 1984 |
| Cactaceae | ** |
Nopalxochia macdougallii
| (Alexander) W.T. Marshall | Cact. Succ. J. (Los Angeles) 19(6): 95 | 1947 |
| Cactaceae | ** |
Nopalxochia macdougallii
| (Alexander) Bravo | Cact. Suc. Mex. 17(4): 119 | 1972 |
| Cactaceae | ! |
Nopalxochia macdougallii
| (Alexander) W.T. Marshall | Cactus (Paris) 4: 6 | 1946 |
| Cactaceae | |
Nopalxochia phyllanthoides
| (DC.) Britton & Rose | Cact. 4: 205, f. 207 | 1923 |