Parodia ottonis var. tortuosa (Link & Otto) N.P.Taylor in Bradleya 5: 93. 1987
Parodia ottonis var. tortuosa in Bradleya 5: 93. 1987
is new combination for Echinocactus tortuosus in Icon. Pl. Rar. 3: 29. 1828
Parodia ottonis var. tortuosa in Bradleya 5: 93. 1987
Taxon for this name