Piptanthocereus validus (Haw.) Riccob. in Boll. Reale Orto Bot. Palermo 8: 234. 1909 Piptanthocereus validus (Haw.) Riccob. in Boll. Reale Orto Bot. Palermo 8: 234. 1909is new combination for Cereus validus Haw. in Philos. Mag. Ann. Chem. 10: 414. 1831Taxon for this namePiptanthocereus validus (Haw.) Riccob.