Trichocereus vollianus Backeb., Kaktus-ABC: 205, 412. 1936 ["1935"]
Trichocereus vollianus, Kaktus-ABC: 205, 412. 1936 ["1935"]
is basionym for Echinopsis volliana in I.O.S. Bull. 3(3): 99. 1974
is basionym for Soehrensia volliana in Cactaceae Syst. Init. 28: 31. 2012