Echinocereus rigidissimus ssp. rubispinus belongs to Cactaceae (the Cactus family). It is an evergreen succulent perennial that is native to Chihuahua state in northern Mexico. This cactus grows generally solitary, and grows up to 20 cm in height, up to 5 cm in diameter. It is covered with numerous rose-red spines. Flowers are large about 7 cm in diameter, pink with a white center, and bloom in early summer.