Piptanthocereus beneckei (Ehrenb.) Riccob. in Boll. Reale Orto Bot. Palermo 8: 226. 1909
Piptanthocereus beneckei in Boll. Reale Orto Bot. Palermo 8: 226. 1909
is new combination for Cereus beneckei in Bot. Zeitung (Berlin) 2: 835. 1844
Piptanthocereus beneckei in Boll. Reale Orto Bot. Palermo 8: 226. 1909