Echinofossulocactus multicostatus f. variegated (Variegated)

It is a globular cactus with a solitary habit. Its stem has a particular intense yellow variegation that completely covers it, making it unique and highly appreciated. It is slightly concave at the apex and takes the name 'multicostatus', due to the large number of slender, well-furrowed ribs of a very wavy shape, equipped with white downy areoles. The radial spines are thin, of an almost translucent white color, while the central ones are longer, of a yellowish-white color, slightly tending upwards.