Cactus ottonis Lehm., Index Sem. (Hamburg): 16. 1827
Cactus ottonis, Index Sem. (Hamburg): 16. 1827
is basionym for Parodia ottonis in Bradleya 5: 93. 1987
is basionym for Peronocactus ottonis in Sukkulenty 2(2): 20. 1999
is basionym for Echinocactus ottonis in Icon. Pl. Rar. 3: 31. 1828
is basionym for Notocactus ottonis, Kakteen: 212. 1929
is basionym for Malacocarpus ottonis, Cactaceae 3: 195–197. 1922