Synonyms
Wilcoxia tamaulipensis Werderm.
Echinocereus tuberosus Poselg. ex Rümpler
Echinocereus tamaulipensis (Werderm.) Mich.Lange
Wilcoxia tamaulipensis var. brevissima A.Cartier
Cereus poselgeri (Lem.) J.M.Coult.
Echinocereus poselgeri subsp. gerhardii Waldeis, W.Blum & D.Felix
Wilcoxia poselgeri (Lem.) Britton & Rose