Ruschia cupulata (L.Bolus) Schwantes in Z. Sukkulentenk. 3: 106. 1927 sec. Hartmann 2017
- ≡Mesembryanthemum cupulatum L.Bolus in Ann. Bolus Herb. 4: 91. 1927 syn. sec. Hartmann 2017
- ≡Ruschia capulata (L.Bolus) Schwantes in Natl. Cact. Succ. J. 4: 58. 1949, nom. illeg., syn. sec. Hartmann 2017