Hylocereus monacanthus (Lem.) Britton & Rose, Cactaceae 2: 190. 1920 Hylocereus monacanthus (Lem.) Britton & Rose, Cactaceae 2: 190. 1920is new combination for Cereus monacanthus Lem. in Hort. Universel 6: 60. 1841Taxon for this nameHylocereus monacanthus (Lem.) Britton & Rose