Coryphantha bumamma (C. Ehrenb.) Britton & Rose Coryphantha bumamma (C. Ehrenb.) Britton & Rose, Cactaceae (Britton & Rose) 4: 33. 1923 sec. Bravo-Hollis & Sánchez-Mejorada 1991≡Mammillaria bumamma C. Ehrenb. in Allg. Gartenzeitung 17: 243. 1849 syn. sec. Guzmán & al. 2003