What plant is the white oblique cactus? This spherical species is extremely small in size

The white oblique cactus, of the cactus family, is a succulent plant. It likes full sunlight, and in winter requires cool temperatures and dry potting soil. The white oblique cactus is a famous classic among cacti. The species, pure white and lovely, and moreover extremely rare, is listed as first-class protected. It can be used for display as a precious plant specimen, and can also be collected and cultivated by some enthusiasts.
The white oblique cactus is a succulent plant. A very small spherical species, the plant is solitary, 1-3 cm in diameter, the body densely covered with white spines, and after the spines are wounded a white milky sap flows out; spines number 20-40, 0.2 cm long, arranged in a comb-tooth pattern; the flowers are small, yellow, borne in the axils of the wart-like protrusions on the side of the body; the fruit is small; the seeds are black.
White oblique cactus
Morphological characteristics:
A very small spherical species, the plant is solitary, 1-3 cm in diameter, the body densely covered with white spines, and after the spines are wounded a white milky sap flows out; spines number 20-40, 0.2 cm long, arranged in a comb-tooth pattern; the flowers are small, yellow, borne in the axils of the wart-like protrusions on the side of the body; the fruit is small; the seeds are black. Because its body is very similar to another very famous variety, the body diameter is 3--7CM or larger, spherical or short cylindrical, the flower is semi-radiate, flower diameter 2-3.5CM, flower color white or pale flesh-colored, and the flower color harmonizes fairly well with the body and spines.
White oblique cactus
Growing environment:
It likes full sunlight, and in winter requires cool temperatures and dry potting soil.
Distribution range: Mexico
Propagation and cultivation:
Propagation can be by sowing or grafting. Cultivation requires calcareous sandy loam.
White oblique cactus
Cultivation techniques:
The white oblique cactus grows on gravelly ground in its place of origin, where drainage is extremely good. For cultivation on its own roots, a loose calcareous potting soil should be used, and in summer it should be slightly shaded. At present we mainly still cultivate it after grafting; as long as attention is paid to controlling red spider mites, other aspects are not too difficult.
Similar species:
The white oblique cactus is very well known among enthusiasts in China, and has a long history of cultivation; in fact its cultivation is extremely easy. It is confused with certain small species of the genus Echinocereus, so care must be taken to distinguish them.