Mammillaria sheldonii f. crested

The crested shape of this cactus has a characteristic that makes the plant unique: its fan crest! You will never find two identical crested plants, which is why each specimen is highly appreciated. In the normal form M. sheldonii is a dark green cactus with tubercles from which emerge its radial and central spines, initially they are greyish and with the growth they become dark brown hooked.