Classification
Kingdom: Plantae (2635)
Phylum: Tracheophyta (2573)
Class: Magnoliopsida (2146)
Order: Caryophyllales (124)
Family: Cactaceae (20)(family description)
Genus: Cereus (1)
Epithet: jamacaru DC. (1)
Synonyms: Acanthocereus horribarbis Borg (Salm-Dyck), Cactus jamacaru Kostel. (DC.), Cereus horribarbis Salm-Dyck, Cereus jamacaru Salm-Dyck, Cereus uruguayensis F.Ritter, Piptanthocereus jamacaru Riccob.
jamacaru => derived from the indigenous tupi word mandacarú, meaning spiny bundle