Echinocactus knuthianus Boed. in Monatsschr. Deutsch. Kakteen-Ges. 2: 139. 1930
Echinocactus knuthianus in Monatsschr. Deutsch. Kakteen-Ges. 2: 139. 1930
is basionym for Turbinicarpus saueri subsp. knuthianus, Cacti CITES Appendix 1: 9. 2001
is basionym for Gymnocactus knuthianus in Cact. Succ. J. (Los Angeles) 23: 151. 1951
is basionym for Pediocactus knuthianus in Acta Mus. Richnov., Sect. Nat., 5: 18. 1998
is basionym for Neolloydia knuthiana, Kaktus-ABC: 367. 1936 ["1935"]
is basionym for Thelocactus knuthianus, Cacti, ed. 1: 284. 1937
is basionym for Turbinicarpus knuthianus in Kaktusy (Brno) 19: 22. 1983
Type: Lectotype: [illustration] “Echinocactus Knuthianus Böd. sp. nov. ½ natürl. Grösse” in Monatsschr. Deutsch. Kakteen-Ges. 1930: 138. 19301