Echinocereus longisetus subsp. delaetii (Gürke) N.P. Taylor in Cactaceae Consensus Init. No. 3: 9. 1997 sec. Hunt 2016
- ≡Cephalocereus delaetii Gürke, Monatsschr. Kakteenk. 19. 117. 1909 syn. sec. Guzmán & al. 2003
- =Echinocereus delaetii (Gürke) Gürke in Monatsschr. Kakteenk. 19: 131. 1909 syn. sec. Guzmán & al. 2003
- =Echinocereus longisetus var. delaetii (Gürke) N.P. Taylor in Bradleya 6: 79. 1988 syn. sec. Guzmán & al. 2003