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CCDB → Angiosperms → Cactaceae → Cactus
| Taxon name | Status | Median (n) |
| Mammillaria minima Rchb. | Synonym of Cactus minimus Kuntze | 11 |
| Cactus intortus Mill. | Synonym of Melocactus intortus (Mill.) Urb. | 11 |