Parodia gracilis F.Ritter in Succulenta (Netherlands) 1964: 23. 1964 Parodia gracilis F.Ritter in Succulenta (Netherlands) 1964: 23. 1964is basionym for Notocactus oxycostatus subsp. gracilis (F.Ritter) Lodé in Cact.-Avent. Int. 98(Suppl.): 8. 2013Taxon for this nameParodia gracilis F.Ritter