Armatocereus

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Armatocereus
Armatocereus riomajensis
Armatocereus riomajensis
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Browningieae
Genus: Armatocereus
Backeb.
Species
  • 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.