Thelocactus bicolor subsp. schwarzii (Backeb.) N.P.Taylor in Cactaceae Consensus Init. 5: 14. 1998
Thelocactus bicolor subsp. schwarzii in Cactaceae Consensus Init. 5: 14. 1998
is new combination for Thelocactus schwarzii in Cact. Succ. J. Gr. Brit. 12: 81. 1950
Thelocactus bicolor subsp. schwarzii in Cactaceae Consensus Init. 5: 14. 1998