Calymmanthium fertile F.Ritter in Succulenta (Netherlands) 45: 117, 135. 1966 Calymmanthium fertile F.Ritter in Succulenta (Netherlands) 45: 117, 135. 1966is new combination for Calymmanthium fertile F.Ritter, Kakteen Südamerika 4: 1266. 1981Taxon for this nameCalymmanthium fertile F.RitterCalymmanthium fertile F.Ritter