This genus comprises approximately 33 species of sizable, columnar cacti that originate from South America. They feature ribbed, spiny stems. The flowers, which are large and funnel-shaped, open at night, primarily in white but occasionally in shades of pink, purple, yellow, green, and, on rare occasions, cream.

Cereus alacriportanus

Cereus argentinensis

Cereus azureus

Cereus campinensis

Cereus dayami

Cereus diffusus

Cereus fernambucensis

Cereus flagelliformis

Cereus glaucus

Cereus grandicostatus

Cereus haageana

Cereus hankeanus

Cereus hexagonus

Cereus hildmannianus

Cereus huntingtonianus

Cereus insularis

Cereus jamacaru

Cereus jamacaru 'Glaucus'

Cereus obtusus

Cereus pachyrrhizus

Cereus phatnospermus

Cereus polychaetus

Cereus pseudocaesius

Cereus repandus is a cactus that can grow in a branching, shrubby, or tree-like form, reaching heights of up to 10 meters. Its cylindrical stems are grey-green to bluish and can measure up to 20 centimeters in diameter. The stems may be segmented and typically feature 8 to 13 distinct ribs. This species produces creamy-white flowers that bloom at night, lasting only a single evening, and may yield spherical or egg-shaped fruits that are edible and can grow up to 4 centimeters in length.

Cereus repandus

Cereus repandus 'Monstrosus'

Cereus saxicola

Cereus smithianus

Cereus spegazzinii

Cereus spegazzinii cristate

Cereus stenogonus

Cereus straussii

Cereus triangularis

Cereus trigonodendron

Cereus uruguayanus

Cereus validus is a tall, columnar cactus that can grow up to 4 meters in height. Its stems are deeply ribbed and exhibit a dull bluish-green to grey-green coloration, adorned with groups of long spines. In early autumn, it produces large, cup-shaped flowers that are red and white, blooming at night.

Cereus validus

Cereus variabilis

Cereus variabilis 'Monstrosus Cristatus'

Cereus x roseo-purpureus

Cereus xanthocarpus

Chamaecereus luisramirezii

Cipocereus

Cipocereus bradei

Cipocereus pleurocarpus

Cleistocactus consists of upright, column-like cacti characterized by ribbed, cylindrical stems that may branch over time. These plants are adorned with dense spines and produce tubular flowers.

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