Notocactus warasii

It is also known as Parodia warasii. The globular stem can start branching from the base and become clustered over time. Its ribs are well defined and can take on a slight curvature over time. They have multiple downy white areoles. The spines are soft and flexible, needle-like, of an intense yellow color, tending to brown. In summer it blooms with large yellow flowers, with almost transparent glossy petals, located at the apex of the plant.