Cleistocactus pungens F.Ritter in Taxon 13(4): 115. 1964 Cleistocactus pungens F.Ritter in Taxon 13(4): 115. 1964Type: Peru, frontier of depts Ayacucho/Apurímac, Río Pampas, 1957, F. Ritter 664 (U)Taxon for this nameCleistocactus pungens F.Ritter in Taxon 13(4): 115. 1964