Gymnocalycium immemoratum A.Cast. & H.V.Lelong in Lilloa 4: 195. 1939 Gymnocalycium immemoratum A.Cast. & H.V.Lelong in Lilloa 4: 195. 1939is basionym for Gymnocalycium mostii var. immemoratum (A.Cast. & H.V.Lelong) H.Till & Amerh. in Gymnocalycium 15: 431. 2002Taxon for this nameGymnocalycium immemoratum A.Cast. & H.V.Lelong