Astrophytum myriostigma quadricostatum, known as the selected SAB400 cultivar, is a captivating cactus prized for its distinctive four-ribbed form. This rare botanical gem features a smooth, almost spineless surface adorned with subtle white flecks that create a striking contrast against its vibrant green body. The quadricostatum variety stands out among Astrophytum myriostigma types due to its unique rib structure, which lends an elegant, sculptural quality to the plant. Native to Mexico, this species is celebrated for its ornamental appeal and geometric symmetry, making it a favored choice for collectors and enthusiasts. The Astrophytum myriostigma SAB400 selected showcases refined morphology with a compact, symmetrical growth habit that emphasizes its architectural beauty. Its minimalistic yet bold appearance embodies both rarity and refinement, elevating any plant collection with a touch of desert elegance.