Gymnocalycium baldianum (Speg.) Speg. in Anales Soc. Ci. Argent. 99: 135. 1925 sec. Charles 2009
- ≡Echinocactus baldianus Speg. in Anales Mus. Nac. Buenos Aires, ser. 3, 4: 505. 1905 syn. sec. Charles 2009
- =Echinocactus sanguiniflorus Werderm. in Repert. Spec. Nov. Regni Veg. 30: 56. 1932 syn. sec. Charles 2009
- ≡Gymnocalycium sanguiniflorum (Werderm.) Werderm. in Kakteen And. Sukk. 1: 79. 1937 syn. sec. Charles 2009
- ≡Gymnocalycium baldianum subsp. sanguiniflorum (Werderm.) C.A.L.Bercht in Succulenta (Netherlands) 88: 59. 2009 syn. sec. Kew WCVP (2019)
- =Gymnocalycium venturianum Backeb. in Blätt. Kakteenf. 1934(9): 1. 1934 syn. sec. Charles 2009
- =Gymnocalycium baldianum var. albiflorum C.A.L.Bercht in Gymnos 11(21): 6. 1994 syn. sec. Kew WCVP (2019)
- =Gymnocalycium raineri H.Till in Gymnocalycium 20: 722. 2007 syn. sec. Charles 2009
- ≡Gymnocalycium baldianum var. raineri (H.Till) Milt in Cactaceae Syst. Init. 25: 116. 2015 syn. sec. Kew WCVP (2019)
- =Gymnocalycium marianae Perea, O.Ferrari, Las Peñas & R.Kiesling in Kakteen And. Sukk. 60: 36. 2009 syn. sec. Kew WCVP (2019)
- =Gymnocalycium schreiteri H.Till in Gymnocalycium 22: 854. 2009 syn. sec. Kew WCVP (2019)
- ≡Gymnocalycium baldianum var. schreiteri (H.Till) Milt in Cactaceae Syst. Init. 25: 116. 2015 syn. sec. Kew WCVP (2019)