Echinopsis chacoana var. spinosior F.Ritter in Succulenta (Netherlands) 44: 26. 1965 Echinopsis chacoana var. spinosior F.Ritter in Succulenta (Netherlands) 44: 26. 1965is basionym for Echinopsis rhodotricha var. spinosior (F.Ritter) F.Ritter, Kakteen Südamerika 1: 262. 1979Taxon for this nameEchinopsis chacoana var. spinosior F.Ritter