Trichocereus tulhuayacensis Ochoa ex Backeb. in Kakteen And. Sukk. 8: 106. 1957 Trichocereus tulhuayacensis Ochoa ex Backeb. in Kakteen And. Sukk. 8: 106. 1957is basionym for Echinopsis tulhuayacensis (Ochoa) H.Friedrich & G.D.Rowley in I.O.S. Bull. 3(3): 98. 1974Taxon for this nameTrichocereus tulhuayacensis Ochoa ex Backeb.