Eriosyce castanea (F.Ritter) P.C.Guerrero & Helmut Walter in Taxon 68(3): 568. 2020 Eriosyce castanea (F.Ritter) P.C.Guerrero & Helmut Walter in Taxon 68(3): 568. 2020is new combination for Neoporteria castanea F.Ritter in Taxon 12: 34. 1963Taxon for this nameEriosyce castanea (F.Ritter) P.C.Guerrero & Helmut Walter in Taxon 68(3): 568. 2020