= Arthrocereus bylesianus (Andrae & Backeb.) Buxb.; Kakteen And. Sukk. 20: 97 (1969)
= Arthrocereus rowleyanus (Backeb.) Buxb.; Kakteen And. Sukk. 20: 97 (1969)
= Echinopsis bylesiana (Andrae & Backeb.) Mayta; Succulentopia 14: 14 (2015)
= Echinopsis familiaris (F.Ritter) Mayta & Molinari; Succulentopia 14: 14 (2015)
= Haageocereus bylesianus (Andrae & Backeb.) Lodé; Cact.-Advent. Int. (Almeria) 98(Suppl.): 5 (2013)
= Haageocereus familiaris (F.Ritter) Lodé; Cact.-Advent. Int. (Almeria) 98(Suppl.): 5 (2013)
= Pygmaeocereus akersii H.Johnson; (1955) (non Backeb.)
= Pygmaeocereus familiaris F.Ritter; Kakteen Südamerika 4: 1428 (1981)
= Pygmaeocereus rowleyanus Backeb.; Cactaceae [Backeberg] 6: 3718 (1962), nom. illeg.
= Pygmaeocereus vespertinus H.Johnson; (nomen)