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CCDB → Angiosperms → Cactaceae → Mammillaria → Mammillaria heyderi var. bullingtoniana Castetter & P. Pierce & K. H. Schwer.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Mammillaria heyderi var. bullingtoniana Castetter & P. Pierce & K. H. Schwer. | Mammillaria heyderi Muehlenpf. | 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. | ||
| ! | Mammillaria heyderi var. bullingtoniana Castetter & P. Pierce & K. H. Schwer. | Mammillaria heyderi Muehlenpf. | 22 | eFlora |