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Cleistocactus icosagonus

Cleistocactus icosagonus is a slender, columnar cactus from South America, characterized by its numerous ribs and dense, golden spines. It produces tubular, red flowers that barely open (cleistogamous), attracting hummingbirds.

Taxonomic Details

Family:	Cactaceae (kak-TAY-see-ee)
Genus:	Cleistocactus (Kly-stoh-KAK-tus)
Species:	icosagonus
Synonyms:	Seticereus icosagonus, Cactus icosagonus, Cereus icosagonus, Borzicactus icosagonus, Binghamia icosagona

Cactus and Succulents: Octopus Agave (Agave vilmoriniana): The Soft, Recurving Agave with No Teeth; Pseudorhipsalis ramulosa: A Flattened, Epiphytic Cactus with Red-Suffused Stems; Coral Aloe (Aloe striata): Smooth Striped Winter Bloomer; Tasajillo (Cylindropuntia leptocaulis); Lepismium cruciforme (Trailing Cactus); Austrocylindropuntia verschaffeltii: A Cylindrical, Jointed Cactus; Striata Agave (Agave striata): A Spherical, Needle-Leaved Agave; Echinocereus scheeri subsp. gentryi: A Clumping, Pink-Flowered Hedgehog; Rebutia mentosa: A Small, Clustering, Orange-Flowered Cactus; Dicksonia sellowiana (Tree Fern)

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