Echinopsis thionantha (Speg.) D.R.Hunt in Bradleya 5: 92. 1987 Echinopsis thionantha (Speg.) D.R.Hunt in Bradleya 5: 92. 1987is new combination for Echinocactus thionanthus Speg. in Anales Mus. Nac. Buenos Aires, ser. 3, 4: 499. 1905Taxon for this nameEchinopsis thionantha (Speg.) D.R.Hunt