Astrophytum myriostigma cv. Fukuryu Hakujo f. crested (Cactus)

It's a small rare cactus of a particular shape, which creates a mix of lines that make it unique and highly appreciated by green collectors from all over the world. Its epidermis is entirely covered with thick white dots, which has numerous shallow, wrinkled, irregular ribs outlined by white downy lines (Haku-Jo), arranged to form cresting.