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CCDB → Angiosperms → Cactaceae → Cylindropuntia → Opuntia acanthocarpa var. thornberi (Thornber & Bonker) L. D. Benson
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Opuntia acanthocarpa var. thornberi (Thornber & Bonker) L. D. Benson | Cylindropuntia acanthocarpa (Engelm. & J. M. Bigelow) F. M. Knuth | 11 | IPCN online | Pinkava, D. J., M. A. Baker, B. D. Parfitt, M. W. Mohlenbrock & R. D. Worthington. 1985. Chromosome numbers in some cacti of western North America-V. Syst. Bot. 10: 471–483. | ||
| ! | Opuntia acanthocarpa var. thornberi (Thornber & Bonker) L. D. Benson | Cylindropuntia acanthocarpa (Engelm. & J. M. Bigelow) F. M. Knuth | 11 | IPCN online | Pinkava, D. J., B. D. Parfitt, M. A. Baker & R. D. Worthington. 1992. Chromosome numbers in some cacti of western North America---VI, with nomenclatural changes. Madroño 39(2): 98–113. | ||
| ! | Opuntia acanthocarpa var. thornberi (Thornber & Bonker) L. D. Benson | Cylindropuntia acanthocarpa (Engelm. & J. M. Bigelow) F. M. Knuth | 11 | IPCN online | Pinkava, D. J., J. P. Rebman & M. A. Baker. 1998. Chromosome numbers in some cacti of western North America---VII. Haseltonia 6: 32–41. |