Mammillaria stand out for tubercles and varied spine patterns, with flowers that form a crown near the top in many species.
Mammillaria have small tubercles instead of continuous ribs, with spines creating diverse patterns. In many species, flowers form a crown near the top.
Some plants remain solitary while others make many offsets and dense clumps. Airflow and careful watering help prevent moisture between stems, especially in densely hairy or spiny plants. Explore Coryphantha.