Mammillaria ottonis Pfeiff. in Allg. Gartenzeitung 6: 274. 1838
Mammillaria ottonis in Allg. Gartenzeitung 6: 274. 1838
is basionym for Coryphantha ottonis, Cactées: 34. 1868
is basionym for Cactus ottonis, Revis. Gen. Pl. 1: 261. 1891
Type: not designated