Gymnocalycium oenanthemum var. tillianum (Rausch) Slaba in Kaktusy (Brno) 47: 44. 2011 Gymnocalycium oenanthemum var. tillianum (Rausch) Slaba in Kaktusy (Brno) 47: 44. 2011is new combination for Gymnocalycium tillianum Rausch in Kakteen And. Sukk. 21: 66. 1970Taxon for this nameGymnocalycium oenanthemum var. tillianum (Rausch) Slaba