Mammillaria geminispina
 Mammillaria geminispina (twin spined cactus) is a species of flowering plant in the family Cactaceae native to central Mexico. It grows to 25 cm (10 in) tall by 50 cm (20 in) broad. The clustering spherical stems 8 cm in diameter are covered in white down and white spines. Carmine pink flowers are borne in summer and autumn.