Thelocactus bicolor var. flavidispinus Backeb. in Jahrb. Deutsch. Kakteen-Ges. 1: 6. 1941
Thelocactus bicolor var. flavidispinus in Jahrb. Deutsch. Kakteen-Ges. 1: 6. 1941
is basionym for Thelocactus bicolor subsp. flavidispinus in Cactaceae Consensus Init. 5: 14. 1998
is basionym for Thelocactus flavidispinus in Cact. Succ. J. (Los Angeles) 23: 150. 1951
is basionym for Ferocactus bicolor var. flavidispinus in Cact. Succ. J. Gr. Brit. 41: 30. 1979