Coryphantha is a diverse genus of small, globular cacti native to Mexico and the southwestern United States, known for their rounded bodies, prominent tubercles, and often spiny surfaces. These hardy plants typically produce beautiful, colorful flowers in spring, ranging from white to yellow or pink. An interesting fact is that many Coryphantha species resemble miniature agaves and are valued for their resilience and striking, textured appearance, making them popular among cactus enthusiasts.