Cereus peruvianus var. monstrosus DC., Prodr. 3: 464. 1828
Cereus peruvianus var. monstrosus, Prodr. 3: 464. 1828
is basionym for Piptanthocereus peruvianus var. monstruosus in Boll. Reale Orto Bot. Palermo 8: 233. 1909
is basionym for Cactus peruvianus var. monstruosus, Cat. Pl. Horti Monsp.: 13. 1813