Cereus iquiquensis K.Schum. in Monatsschr. Kakteenk. 14: 99. 1904
Cereus iquiquensis in Monatsschr. Kakteenk. 14: 99. 1904
is basionym for Eulychnia iquiquensis, Cactaceae 2: 83. 1920
is basionym for Eulychnia iquiquensis subsp. iquiquensis
is basionym for Eulychnia breviflora subsp. iquiquensis in Cactaceae Syst. Init. 14: 16. 2002
Neotype (designated by Leuenberger, B. E. & Eggli, U. 2000: 761): Chile, Atacama desert near Iquique, Reiche s.n. (B, in spirit: B 810006746)