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CCDB → Angiosperms → Cactaceae → Ferocactus → Ferocactus horridus Britton & Rose
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Ferocactus horridus Britton & Rose | Ferocactus peninsulae (A. A. Weber) Britton & Rose | 22 | IPCN online | Das, A. B., S. Mohanty, R. H. Marrs & P. Das. 2000. Interspecific variations of nuclear DNA content and karyotype diversity in Ferocactus. Cytologia 65: 49–56. |