From Argentina grasslands. One of the largest Gymno's, to 1/2 metre diameter after many years!!! Flowers readily. Easy to grow, prefers partial shade. Outdoors if protected from winter rain.
4.Indoors OK, Outdoors OK only if protected from winter rain.
Gymnocalycium saglione (w1348)
The pic/s tell the story.
Pot diameter: 10 cms