Astrophytum myriostigma cv. Onzuka f. crested (Crested)

This cultivar was obtained by Mr. Tsutomu Onzuka around 1974 and for this reason the plant took his name. It is a rare fan-shaped cactus, characterized by a green epidermis, almost entirely covered by a thick white punctuation, velvety to the touch. It is a unique specimen in its kind and therefore highly sought after by green collectors.