Echinocereus freudenbergeri G. Frank in Kakteen And. Sukk. 32: 105. 1981 sec. Hunt 2016
- =Echinocereus delaetii var. freudenbergeri (G. Frank) N.P. Taylor, Gen. Echinocereus: 97. 1985 syn. sec. Guzmán & al. 2003
- =Echinocereus longisetus subsp. freudenbergeri (G. Frank) W. Blum, Echinocereus: 6. 1998 syn. sec. Guzmán & al. 2003