| Biznaga del Bernal | |
| Mammillaria | |
| Biznaguita |
| Plant Habit: | Fern |
| Life cycle: | Annual |
| Minimum cold hardiness: | Zone 8a -12.2 °C (10 °F) to -9.4 °C (15 °F) |
| Maximum recommended zone: | Zone 7b |
| Containers: | Prefers to be under-potted |
| Conservation status: | Extinct (EX) |
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