Mammillaria spinosissima Rubrispina is a species of cactus native to the desert regions of Mexico. This cactus exhibits relatively slow growth and is characterized by its spherical to cylindrical shape, reaching heights of 10 to 15 centimeters. One of its distinctive features is the color of its spines, which can range from vivid red to bright pink, adding an attractive splash of color to the plant. This cactus species is appreciated by collectors for its appealing shape, vibrant color, and relatively easy maintenance.