Gymnocalycium marquezii

It is a very globose cactus, easily recognizable by its well-marked protuberances. It has multiple tubercles, on which large oval areoles, slightly downy, of a white color, sprout. Its sturdy, strong and rather long grayish-white spines tend to envelop the body. Near the apex it blooms with funnel-shaped inflorescences, which can vary in color from white to creamy yellow.