Cactaceae
Turbinicarpus knuthianus
Basionyme et synonymes homotypes
Echinocactus knuthianus Boed. 1930
Thelocactus knuthianus (Boed.) Borg 1937
Gymnocactus knuthianus (Boed.) Backeb. 1951
Turbinicarpus knuthianus (Boed.) John & Riha 1983
Neolloydia knuthiana (Boed.) E.F.Anderson 1986
Pediocactus knuthianus (Boed.) Halda 1998
Thelocactus knuthianus (Boed.) Borg 1937
Gymnocactus knuthianus (Boed.) Backeb. 1951
Turbinicarpus knuthianus (Boed.) John & Riha 1983
Neolloydia knuthiana (Boed.) E.F.Anderson 1986
Pediocactus knuthianus (Boed.) Halda 1998