Trichocereus manguinii Backeb. in Cactus (Paris) 35: 147. 1953 Trichocereus manguinii Backeb. in Cactus (Paris) 35: 147. 1953is basionym for Echinopsis manguinii (Backeb.) H.Friedrich & G.D.Rowley in I.O.S. Bull. 3(3): 96. 1974Taxon for this nameTrichocereus manguinii