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CCDB → Angiosperms → Cactaceae → Opuntia → Opuntia tortispina Engelm. & J. M. Bigelow
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Opuntia tortispina Engelm. & J. M. Bigelow | Opuntia macrorhiza Engelm. | 33II | c.66 | IPCN online | Powell, A. M. & J. F. Weedin. 2001. Chromosome numbers in Chihuahuan Desert Cactaceae. III. Trans-Pecos Texas. Amer. J. Bot. 88(3): 481–485. | |
| ! | Opuntia tortispina Engelm. & J. M. Bigelow | Opuntia macrorhiza Engelm. | 44,66 | eFlora |