Gibbaeum hartmannianum Thiede & Niesler in Haseltonia 18: 38. 2012 sec. Thiede 2017
- =Gibbaeum haagei var. parviflorum L.Bolus in J. S. African Bot. 32: 128. 1966 syn. sec. Thiede 2017
- –Gibbaeum austricola Glen, Rev. Gibbaeinae: 105. 1974, nom. nud., syn. sec. Thiede 2017