Gymnocalycium marquezii Cárdenas in Kakteen And. Sukk. 9(2): 26. 1958

Holotype: Bolivia, Tarija, Angosto de Villa Montes, alt. 600 m, Mar 1953, M. Cárdenas 5066 (LIL: LIL001919) https://plants.jstor.org/stable/10.5555/al.ap.specimen.lil001919

Taxon for this name