Coryphantha robustispina (Ant. Schott ex Engelm.) Britton & Rose Coryphantha robustispina (Ant. Schott ex Engelm.) Britton & Rose, Cactaceae (Britton & Rose) 4: 33. 1923 sec. Guzmán & al. 2003≡Mammillaria robustispina Ant. Schott ex Engelm. in Proc. Amer. Acad. Arts 3: 265. 1856 syn. sec. Guzmán & al. 2003