Coryphantha borwigii

Beautiful cactus with a solitary course and globose shape that over time can become cylindrical. The stem of dark green or greyish color has several well marked and rhomboidal ribs. From the white and woolly areolas depart its spines: the radials arranged like rays are numerous, whitish with dark tips; the central ones instead present after several years with the growth of the plant, are more robust and of dark color, less numerous and slightly curved. The beautiful flowers of C. Borwigi are bright yellow, with shaded red tips.