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CCDB → Angiosperms → Cactaceae → Echinocereus → Echinocereus arizonicus subsp. nigrihorridispinus W. Blum & Rutow
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Echinocereus arizonicus subsp. nigrihorridispinus W. Blum & Rutow | Echinocereus coccineus Engelm. | 11 | Baker, 2009 | |||
| Echinocereus arizonicus subsp. nigrihorridispinus W. Blum & Rutow | Echinocereus coccineus Engelm. | 11 | IPCN online | Baker, M. 2006. A new florally dimorphic hexaploid, Echinocereus yavapaiensis sp. nov. (section Triglochidiatus, Cactaceae) from central Arizona. Pl. Syst. Evol. 258: 63–83. |