Piptanthocereus colosseus F.Ritter, Kakteen Südamerika 2: 553-554. 1980
Piptanthocereus colosseus, Kakteen Südamerika 2: 553-554. 1980
is basionym for Cereus lamprospermus subsp. colosseus in Succulenta (Netherlands) 74(2): 84. 1995
is basionym for Cereus colosseus in Cactology 3: 6. 2012