Armatocereus

Taxobox
name = "Armatocereus"

---

image_width = 240px
image_caption = "Armatocereus riomajensis"
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Caryophyllales
familia = Cactaceae
subfamilia = Cactoideae
tribus = Browningieae
genus = "Armatocereus"
genus_authority = Backeb.
subdivision_ranks = Species
subdivision =
*"Armatocereus ghiesbreghtii"
*"Armatocereus matucanensis"
*"Armatocereus oligogonus"
*etc.

"Armatocereus" (from Latin "armatus", "armed" and "cereus", "pliant/soft") is a genus of mostly tree-like cacti from South America (Colombia, Ecuador to Peru). These species have a conspicuous constriction at the end of the annual growth. The flowers are mostly white, with more or less spiny ovary. The fruits are mostly spiny.