Coryphantha ottonis (Pfeiff.) Lem., Cactées: 34. 1868 Coryphantha ottonis (Pfeiff.) Lem., Cactées: 34. 1868is new combination for Mammillaria ottonis Pfeiff. in Allg. Gartenzeitung 6: 274. 1838Taxon for this nameCoryphantha ottonis (Pfeiff.) Lem., Cactées: 34. 1868