Names and synonyms
Thelocactus tulensis (Poselger) Britton & Rose, Cact. 4: 11 (1923).
Echinocatus tulensis Poselger, Allg. Gartenz. 21: 125 (1853). Thelocactus tulensis ssp. huizachensis Halda & Sladkovsky, Acta Mus. Richnov. Sect. natur. 7: 39 (2000). Thelocactus tulensis ssp. kupcakii Halda & Sladkovsky, Acta Mus. Richnov. Sect. natur. 7: 40 (2000). Thelocactus vaskoanus Halda & al., Acta Mus. Richnov. Sect. natur. 7: 75 (2000). Thelocactus tulensis ssp. vaskoanus Halda & al., Acta Mus. Richnov. Sect. natur. 9: 41 (2002).